[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Bishop-Knight-Endgame"]
[Black "?"]
[Result "*"]
[Annotator "akantor"]
[SetUp "1"]
[FEN "k7/8/8/8/5N2/8/8/5B1K w - - 0 1"]
[PlyCount "3"]

{Diagram [#]} 1. Nd5 (1. Bb5) 1... Kb7 2. Bb5 *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "Howard Stern"]
[Result "1-0"]
[ECO "C80"]
[Annotator "akantor"]
[PlyCount "27"]
[EventDate "2017.05.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 exd4 7. Re1 d5 8.
Nxd4 Bd6 9. Nxc6 Bxh2+ {Diagram [#]} 10. Kh1 (10. Kxh2) 10... Qh4 11. Rxe4+
dxe4 12. Qd8+ Qxd8 13. Nxd8+ Kxd8 14. Kxh2 1-0

[Event "Tata Steel (Challengers)"]
[Site "Wijk aan Zee NED"]
[Date "2017.01.21"]
[Round "7"]
[White "Jorden van Foreest"]
[Black "Gawain Jones"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2612"]
[BlackElo "2665"]
[Annotator "Soltis, Andy"]
[PlyCount "112"]
[EventDate "2017.01.13"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. a4 a5 7. O-O h6 8. Be3
Bxe3 9. fxe3 O-O 10. Nbd2 Ne7 11. Bb3 Ng6 12. Qe2 Re8 13. Rad1 c6 14. Qf2 Be6
15. Bxe6 Rxe6 16. h3 Qb6 17. Nc4 Qc7 18. Rfe1 Rd8 19. Nh4 b5 20. axb5 cxb5 21.
Nd2 Nxh4 22. Qxh4 d5 23. exd5 Rxd5 24. d4 e4 25. Rf1 Rh5 26. Qf4 Qe7 27. Qb8+
Kh7 28. Qf4 Kg8 29. Qb8+ Kh7 30. Qf4 Rg5 31. c4 bxc4 32. Nxc4 Qb4 33. Ne5 Qxb2
34. Rf2 Qb7 35. Ra1 Qc7 36. Rfa2 Rb6 37. Qf2 Rb5 38. Qe2 Rd5 39. Rc2 Qb7 40.
Rac1 {Diagram [#]} Rdxe5 41. dxe5 Rxe5 42. Rc7 Qb3 43. Ra7 Rf5 44. Qd2 Nd5 45.
Rxa5 Nxe3 46. Rac5 Rxc5 47. Rxc5 Qd3 48. Qe1 Qd4 49. Qc3 Qd1+ 50. Kf2 Nd5 51.
Qc2 Qd4+ 52. Kg3 Nb4 53. Qc4 Qd6+ 54. Kg4 (54. Kf2 Nd3+) 54... Qg6+ 55. Kh4 Nd3
56. Rb5 Qf6+ 0-1

[Event "Tata Steel"]
[Site "Wijk aan Zee NED"]
[Date "2017.01.22"]
[Round "8"]
[White "Levon Aronian"]
[Black "Anish Giri"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2780"]
[BlackElo "2773"]
[Annotator "Soltis, Andy"]
[PlyCount "85"]
[EventDate "2017.01.13"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 O-O 7. O-O c6 8. Na3
Nbd7 9. Rc1 Ne4 10. Be3 Bxa3 11. bxa3 Nd6 12. c5 Nc4 {Diagram [#]} 13. Rxc4
dxc4 14. Qc2 h6 15. Qxc4 b6 16. Bf4 Re8 17. Bd6 Bb7 18. Ne5 bxc5 19. dxc5 Nxe5
20. Bxe5 a5 21. Rb1 Ra7 22. Qc3 f6 23. Bd6 Ba8 24. Be4 f5 25. Bc2 Rb7 26. Rd1
Rd7 27. e4 Qf6 28. Qc4 Kh8 29. Re1 Qf7 30. Qd3 f4 31. gxf4 e5 32. Qh3 Rxd6 33.
cxd6 Qg6+ 34. Qg3 Qxd6 35. Rd1 Qc5 36. Rd7 Rg8 37. Bb3 exf4 38. Qg6 f3 39. h4
Qc3 40. Bxg8 Qe1+ 41. Kh2 Qxf2+ 42. Kh3 Qf1+ 43. Kg4 1-0

[Event "Tata Steel"]
[Site "0:51:33-0:49:33"]
[Date "2017.01.14"]
[Round "1"]
[White "Pavel Eljanov"]
[Black "Richard Rapport"]
[Result "1-0"]
[ECO "A04"]
[Annotator "Soltis, Andy"]
[PlyCount "81"]
[EventDate "2017.01.14"]

1. Nf3 e6 2. g3 c5 3. Bg2 Nc6 4. c4 g5 5. d3 h6 6. Nc3 Bg7 7. h4 g4 8. Nd2 d6
9. e3 f5 10. Nb3 Nge7 11. d4 b6 12. O-O O-O 13. Qe2 e5 14. Rd1 cxd4 15. Nd5 {
Diagram [#]} d3 (15... Ba6 16. Nxe7+ Nxe7 17. Bxa8 Qxa8 18. exd4 Qc6 19. d5 Qc8
20. Qc2 Bxc4 21. Bd2 Nxd5) 16. Qxd3 e4 17. Nxe7+ Nxe7 18. Qc2 (18. Qxd6 Qxd6)
18... Ba6 19. Nd4 Qd7 20. b3 Nc6 21. Bb2 Ne5 22. Ne2 Nd3 23. Bxg7 Qxg7 24. Nd4
Rae8 25. Rxd3 exd3 26. Qxd3 {Diagram [#]} Bb7 27. Bxb7 Qxb7 28. Ne2 Rf6 29. Nf4
Qe4 30. Qd2 Rc8 31. a4 Rc5 32. Rd1 Qf3 33. Nd5 Rf7 34. Qc2 a6 35. Nxb6 (35. Rd4
) 35... Qe4 36. Qc3 Qe5 37. Rd4 a5 38. Qd3 Rc6 39. Nd5 Kg7 40. Nc3 Rf6 41. Rd5
1-0

[Event "Tata Steel"]
[Site "0:45:33-0:43:33"]
[Date "2017.01.19"]
[Round "4"]
[White "Wesley So"]
[Black "Pentala Harikrishna"]
[Result "1-0"]
[ECO "A34"]
[Annotator "Soltis, Andy"]
[PlyCount "95"]
[EventDate "2017.01.14"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 c5 5. Nc3 d5 6. d4 cxd4 7. Nxd4 dxc4 8.
Qa4+ Nbd7 9. O-O O-O 10. Rd1 Nb6 11. Qa3 Qd6 12. Qxd6 exd6 13. a4 a6 14. Bf4 d5
15. a5 Nbd7 16. Rac1 Rd8 17. Bc7 Re8 18. Bd6 Ne5 19. Bxd5 Nxd5 20. Nxd5 Bg4 21.
Rd2 {Diagram [#]} Red8 (21... Rad8 22. Nc7 Rf8 23. Bxf8 Bxf8 24. Rdd1 (24. Nf3
Nxf3+ 25. exf3 Rxd2) (24. Nb3 Rc8) 24... Bb4) 22. Nb6 Rxd6 23. Nxa8 Nc6 24. Nf3
Rxd2 25. Nxd2 Bxb2 26. Rxc4 Bxe2 27. Re4 Bd3 28. Re3 Nb4 (28... Ne5 29. f4 Bd4)
29. Nb6 Bd4 30. Re7 Nc6 31. Rxb7 Nxa5 32. Rd7 Nc6 33. Nb3 Bf5 34. Rxd4 Nxd4 35.
Nxd4 Bd3 36. Kg2 Kf8 37. Kf3 Ke7 38. Ke3 Bf1 39. Nf3 Kd6 40. Kd4 f6 41. Nd2 Be2
42. Nd5 f5 43. Nc3 Bh5 44. Nc4+ Ke6 45. f4 Kd7 46. Kc5 h6 47. Nd5 Ke6 48. Nc7+
1-0

[Event "US Championship"]
[Site "New York, NY USA"]
[Date "1962.12.20"]
[Round "4"]
[White "Hans Berliner"]
[Black "Edmar J Mednis"]
[Result "1-0"]
[ECO "E79"]
[Annotator "Soltis, Andy"]
[PlyCount "51"]
[EventDate "1962.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. Be2 cxd4 8. Nxd4
Nc6 9. Be3 Bg4 10. Bxg4 Nxg4 11. Qxg4 Nxd4 12. Qd1 Nc6 13. Rc1 Qa5 14. O-O Rfc8
15. Qe2 Qa6 16. Rfd1 Kf8 17. b3 b6 18. Qf2 Qa5 19. f5 Bxc3 20. Rd5 Qb4 21. Rb5
Qa3 22. Rxc3 Kg7 23. Bc1 Qa6 24. f6+ exf6 {Diagram [#]} 25. Bh6+ Kxh6 (25...
Kg8 26. Qxf6) 26. Qxf6 1-0

[Event "U.S. Championship"]
[Site "New York, NY USA"]
[Date "1954.05.29"]
[Round "1"]
[White "Hans Berliner"]
[Black "Karl Burger"]
[Result "1-0"]
[ECO "E85"]
[Annotator "Soltis, Andy"]
[PlyCount "43"]
[EventDate "1954.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. Nge2 exd4 8. Nxd4
Nbd7 9. Qd2 Re8 10. O-O-O a5 11. Ndb5 b6 12. Bg5 Nc5 13. Nd5 Ne6 14. e5 dxe5
15. Ndxc7 Qxc7 16. Nxc7 Nxc7 17. Bh6 Bh8 18. c5 bxc5 19. Qd6 Ne6 {Diagram [#]}
20. Bb5 Bd7 (20... Rd8 21. Qxd8+) 21. Bxd7 Red8 22. Qxe6 (22. Qc6) 1-0

[Event "5th CC World Ch Final"]
[Site "corr ICCF"]
[Date "1965.??.??"]
[Round "?"]
[White "Werner Stern"]
[Black "Hans Berliner"]
[Result "0-1"]
[ECO "B04"]
[Annotator "Soltis, Andy"]
[PlyCount "40"]
[EventDate "1965.??.??"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Ng5 dxe5 6. dxe5 Bg7 7. Bc4 c6 8. Nc3
h6 9. Nxf7 Kxf7 10. Nxd5 cxd5 11. Bxd5+ Ke8 12. e6 Rf8 13. Qg4 Rf6 14. Qc4 Na6
15. Be3 Qa5+ 16. Bd2 Qb6 17. Bc3 Qxf2+ 18. Kd1 {Diagram [#]} Bxe6 19. Bxf6 Rd8
20. Bh4 (20. Kc1 Bxd5 21. Qf1 Qe3+ 22. Kb1 Bxf6) 20... Qb6 0-1

[Event "47th US Open"]
[Site "Pittsburgh, PA USA"]
[Date "1946.07.09"]
[Round "3"]
[White "Hans Berliner"]
[Black "Sven Elias Almgren"]
[Result "1-0"]
[ECO "C11"]
[Annotator "Soltis, Andy"]
[PlyCount "69"]
[EventDate "1946.??.??"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 Nc6 7. f4 Be7 8. Nf3
O-O 9. g3 cxd4 10. cxd4 b5 11. Bh3 Nb6 12. O-O a5 13. g4 a4 14. f5 Nc4 15. Ng3
f6 16. exf6 Bxf6 17. g5 Bxd4+ 18. Nxd4 Qb6 19. Nge2 e5 20. Bg2 Qc5 21. Kh1 exd4
22. Ng3 Ra7 23. Qh5 Ne3 24. Bxe3 dxe3 25. g6 h6 26. Rac1 Qd6 27. f6 Be6 28. f7+
Kh8 29. Rf6 Ne7 30. Rg1 d4 31. Be4 Nd5 {Diagram [#]} 32. Qxh6+ gxh6 33. g7+
Kxg7 34. Nh5+ Kh8 35. Rxh6# 1-0

[Event "U.S. Championship"]
[Site "New York, NY USA"]
[Date "1954.06.13"]
[Round "13"]
[White "Nicolas Rossolimo"]
[Black "Hans Berliner"]
[Result "0-1"]
[ECO "C08"]
[Annotator "Soltis, Andy"]
[PlyCount "46"]
[EventDate "1954.??.??"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. Be2 Nbd7 7. O-O Be7 8.
b3 O-O 9. Bb2 Re8 10. c4 b6 11. Qc2 Bb7 12. Rad1 Rc8 13. Qb1 Qc7 14. Bd3 Qf4
15. g3 Qh6 16. cxd5 Nxd5 17. Ne5 cxd4 18. Nxd7 Qh3 19. Be4 f5 20. Qd3 fxe4 21.
Qxd4 {Diagram [#]} Nf6 (21... Bf6 22. Nxf6+ Nxf6) 22. Nc4 e3 23. Nxe3 Red8 0-1

[Event "Golden knight championship playoff"]
[Site "U.S."]
[Date "1959.??.??"]
[Round "?"]
[White "Robert Henry Steinmeyer"]
[Black "Hans Berliner"]
[Result "0-1"]
[ECO "E81"]
[Annotator "Soltis, Andy"]
[PlyCount "84"]
[EventDate "1959.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. Qd2 b5 8. Bd3 Nbd7
9. Nge2 O-O 10. O-O e5 11. a3 exd4 12. Nxd4 Bb7 13. a4 b4 14. Nce2 a5 15. Rac1
Nc5 16. b3 Re8 17. Nf4 Rc8 18. Rfd1 Qe7 19. Re1 Qf8 20. Bf1 d5 21. exd5 cxd5
22. Qf2 Nce4 23. Qc2 Nc3 24. Bf2 Bh6 25. g3 dxc4 26. bxc4 Nd7 27. Bh3 f5 28.
Nb5 Nxb5 29. axb5 Nc5 30. Rxe8 Rxe8 31. Bg2 a4 32. Rd1 a3 33. Qd2 b3 34. Qb4 {
Diagram [#]} a2 35. Bxc5 Qxc5+ (35... b2) 36. Qxc5 b2 37. Qf2 b1=Q 38. Qf1 Qxd1
39. Qxd1 Ra8 40. c5 (40. Qa1 Bg7) 40... a1=Q 41. Qxa1 Rxa1+ 42. Kf2 Bxf4 0-1

[Event "USCF/WS/16WM31"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Wright"]
[Black "Stone"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1433"]
[BlackElo "1426"]
[Annotator "Alburt, Lev"]
[PlyCount "52"]
[EventDate "2017.02.05"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 e6 {Diagram [#]} 5. c4 Nf6 6. Bd3 (6.
Nc3 c5 7. d5 (7. Be2)) 6... Be7 (6... c5) 7. O-O Nc6 8. Be3 {Diagram [#]} (8.
Be2) (8. Bc2) 8... O-O (8... Ng4 9. Nc3 Nxe3 10. fxe3) 9. Nc3 h6 (9... Ng4 10.
Bf4 Bd6) 10. a3 a6 11. h3 Bd7 {Diagram [#]} 12. Qc2 (12. Bc2 -- 13. Qd3) 12...
Be8 13. Rad1 Na7 {Diagram [#]} 14. d5 {Diagram [#]} (14. Qc1 -- 15. Bxh6) 14...
Bd7 (14... exd5 15. Nxd5 (15. cxd5 Nxd5 (15... Nb5) 16. Nxd5 Qxd5 17. Bh7+)
15... Qxd5 16. Bh7+) 15. dxe6 fxe6 16. Ne5 (16. Qd2) (16. Qc1) 16... Qc8 17.
Ne4 Be8 {Diagram [#]} 18. Nxf6+ Bxf6 19. Nf3 (19. Ng4) 19... Nc6 20. Rd2 (20.
Rfe1) 20... Ne5 21. Nxe5 (21. Be4) 21... Bxe5 22. Rfd1 b6 {Diagram [#]} 23.
Bh7+ (23. Be4 Ra7 24. Rd8) 23... Kh8 24. Be4 Rb8 {Diagram [#]} 25. Rd8 (25. Qc1
) 25... Qxd8 26. Rxd8 Rxd8 1/2-1/2

[Event "Women's World Championship"]
[Site "Tehran IRI"]
[Date "2017.02.11"]
[Round "1.1"]
[White "Viktorija Ni"]
[Black "Valentina Gunina"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2199"]
[BlackElo "2524"]
[Annotator "Hess, Robert"]
[PlyCount "112"]
[EventDate "2017.02.11"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. e4 $1 {There is absolutely nothing remarkable
about a move that has been played thousands of times before. The exclamation
point is for Ni's decision to transpose a symmetrical English into a Maroczy
Bind structure. The point is that Black really struggles to obtain active
counterplay, which tends to frustrate higher-rated players.} d6 ({The move} 
4... Nc6 {changes the trajectory of the game. Whereas Gunina opted for a
Hedgehog setup, placing the knight on c6 is a more aggressive approach. That
said, White remains very solid and will seize a space advantage, thanks to her
more advanced e-pawn and control over the center One variation that requires
extensive analysis is:} 5. e5 Ng8 6. d4 cxd4 7. Nxd4 Nxe5 8. Ndb5 {where White
banks on the initiative providing sufficient compensation for the sacrificed
pawn.}) 5. d4 cxd4 6. Nxd4 Be7 7. Be2 O-O 8. O-O a6 ({Black would love to
fianchetto the bishop, but unfortunately it fails tactically right now as in
many Sicilian lines.} 8... b6 9. Bf3 Bb7 ({If the move} 9... e5 {is forced,
the opening has gone really wrong. Black cedes control over all the vital
light squares in the position, leaving her strategically lost.}) 10. e5 $1 {
is thematic, winning an exchange.}) 9. Be3 Qc7 10. Qd2 b6 11. Rfc1 {Diagram [#]
Such a move may seem strange to those who have a hard time straying from
general chess principles, but here it is accurate. Sure, the d-file is the
only (semi) open one in the position. But the pawn on d6 will be extremely
difficult to apply pressure on, so the d1 square does not quite feel like the
right spot for the rook. Alternatively, with rooks on b1 and c1, White
provides herself the opportunity for a break on the queenside. The pawn storm
comes naturally, as we'll see in the game.} Bb7 12. f3 Nbd7 13. b4 Rac8 14.
Rab1 ({Attempting to storm the queenside with} 14. a4 {is a typical plan of
action, but White must be extremely cautious. Black has built up the necessary
pressure along the c-file to break in the center. Note that the bishop on e7
not only defends d6, it also spies on the pawn on b4. Thus, Black can attempt
the sequence 14...} d5 15. exd5 Bxb4 16. dxe6 Nc5 {With precise play, White
should claim an edge, though the type of advantage has transitioned from
positional to material. This makes matters immensely complicated. A somewhat
obvious fact that we tend to forget is that an extra enemy pawn typically
results in an extra open file for our rooks. The following variation evidences
how quickly things can go awry for White:} 17. Rab1 Ba5 18. exf7+ Rxf7 19. Nb3
{This all seems natural, but actually falls victim to a surprising tactic} Ng4
$1 20. fxg4 Bxc3 21. Qxc3 Qc6 {and suddenly there is no adequate way to defend
the pawn on g2!} 22. Bf3 ({The other bishop move is far more disastrous} 22.
Bf1 Rxf1+ 23. Kxf1 Qxg2+ 24. Ke1 Qh1+ 25. Kd2 Qxh2+ 26. Ke1 Qg3+ {and the king
has no means of escaping. At best White loses her queen; more likely, all her
pieces are captured and she's checkmated.}) 22... Rxf3) 14... Rfe8 {Gunina no
longer has ...d5 as the pawn on b4 is defended. With that in mind, the next
few moves involve maneuvering.} 15. Qe1 Qb8 16. Qf2 {The queen is much better
placed on f2, since d6 is not a realistic target. The pawn on b6, on the other
hand, is potentially vulnerable.} Bf8 ({With the queen no longer being stared
down by the rook on c1,} 16... d5 {Diagram [#] [#] is extremely tempting.
Black wants nothing more than to lash out and gain space for her pieces, all
of which are impeded by White's pawns. So, dear readers, what's the problem -
if one even exists? This is a very good position to analyze on your own, for
it will help strengthen your strategic thinking and analytical depth.}) 17. Na4
Ba8 18. Nb3 d5 {If not now, when? The pawn on b6 is targeted and pushing it
with 18... b5 fails to the nasty resource 19. Ba7! The point being that after
19...Qb7 both 20. cxb5 axb5 21. Na5 Qa6 22. Nc3 and 20. Na5 Qc7 21. Bb6! pick
up the b-pawn.} (18... b5 19. Ba7 Qb7 20. cxb5 (20. Na5 Qc7 21. Bb6) 20... axb5
21. Na5 Qa6 22. Nc3) 19. e5 $1 {Diagram [#] [#] A very strong move,
maintaining the momentum.} ({The game continuation is extremely high class,
sacrificing a pawn for domination on the queenside. Ni understands that Black
can make little use of an extra central pawn, whereas the initiative quickly
picks up steam.} 19. exd5 {is suprisingly messy, often in Black's favor. For
instance,} Bd6 20. g3 exd5 21. c5 Rxe3 $1 22. Bxa6 ({Definitely not} 22. Qxe3
$2 Bxg3 {with a tremendous attack. The bishop is immune, because Black
exploits the pinned f3 pawn with ...Ng4 after her queen infiltrates.}) 22...
Rce8 23. cxd6 b5 24. Nac5 Qxd6 25. Bxb5 d4 26. Nd2 {and at the very least,
Black has the resourceful} Ng4 {With the bishop staring down the kingside from
a8, White will be fortunate to escape with a half point.}) ({The third
variation has a clear drawback: White wins queenside pawns in exchange for
kingside ones. Not the best tradeoff.} 19. Nxb6 Nxb6 20. Bxb6 dxe4 21. c5 exf3
{is unpleasant.The bishop on b6 is entombed by its own pawns, which forces})
19... Qxe5 20. c5 b5 ({Capturing on c5 can hardly work in Black's favor, since
White will recapture with the b-pawn, which will probably soon find itself on
b6. Quality of pawns frequently trump quantity of pawns.} 20... bxc5 21. bxc5 {
with Nb6 next.}) 21. Nb2 $2 {This move loses the thread. Ni must have been
hesitant to sacrifice a piece, but in the forced continuation she receives
ample compensation for it in the form of two queenside passers and
phenomenally placed pieces.} (21. Nc3 Qb8 22. a4 e5 23. axb5 d4 24. Nxd4 exd4
25. Bxd4 axb5 26. Bxb5 {Diagram [#] [#]}) 21... Qb8 22. Na5 e5 23. c6 ({
A better move was} 23. a4 {to keep more tension on the board, as well as the
restriction of Black's pieces.}) 23... d4 24. Bg5 Bxc6 $2 {Now it is Gunina's
turn to panic, this time in response to the threat of an exposed kingside.} ({
White can hardly mate with just her queen and bishop, so Gunina could safely
nurse her extra material with} 24... Nb6 25. Bxf6 gxf6 26. Qg3+ Bg7 27. Bd3 Nd5
) ({If Gunina was intent on sacrificing, giving up the knight for three pawns
was a better way to continue.} 24... Bxb4 25. cxd7 Nxd7 26. Nb3 {is a true
battle, but if anyone is better it is Black.}) 25. Rxc6 Bxb4 26. Rxa6 Nc5 27.
Nc6 $1 {A very nice resource for Ni, who avoided the more dangerous (but quite
instinctive) reply} (27. Rxf6 $5 Bxa5 28. Qg3 Bc7 29. Bh6 g6 {and with e5-e4
coming, the position is anything but clear.}) 27... Qd6 28. Nxb4 Nxa6 29. Nxa6
{[#]} Nd5 $6 {Gunina understandably did not like the thought of fending off
two bishops with a rook and two pawns. The continuation} (29... Qxa6 30. Qf1 $1
({The push} 30. a4 {seems to exploit the pinned pawn, but} Nd5 31. Bd2 (31.
axb5 $4 Qg6) 31... Nc3 32. Bxc3 dxc3 33. Bxb5 Qg6 34. Nd3 {is playing for all
three results. It's unclear whose winning chances are greater.}) 30... Qxa2 31.
Bxb5 Red8 32. Bc4 Qa3 33. Bd3 $1 {puts Black in big trouble because the minor
pieces coordinate extremely well.}) 30. Bxb5 Nc3 {White currently has three (!)
pieces for a rook and pawn. Ni could have turned this into an extra minor with
fewer complications, but time trouble and the pressure of the moment were
likely overwhelming.} 31. Qf1 ({The following continuation trades more pieces,
which can be worrisome for the pressing side if not enough material remains.
However, here it is simply strong.} 31. Bxe8 Rxe8 (31... Nxb1 32. Bb5 Qg6 33.
h4 h6 34. Bd3 e4 35. Bxb1 hxg5 36. Bxe4 Qxa6 37. hxg5 Qxa2 {should win for
White. Leaving the queens on the board endangers the Black king. Trading them
results in a lost ending.}) 32. Re1 Qxa6 33. Bd2 {should be a straightforward
win. The pawn on a2 is not free because d4 is en prise.}) 31... Nxb5 32. Qxb5
Qg6 ({An improbable move was possible here:} 32... Re6 {Black picks up knight 
(rather than the bishop) and keeps everything under control.}) 33. Re1 Qxg5 34.
Nd3 h6 ({A better try was} 34... Qd2 {, giving Gunina numerous tricks to
attempt to salvage a half point. One particularly crazy line:} 35. a4 h5 36.
Rf1 Re6 37. Nab4 {White is coordinating, but not fast enough. A perpetual
ensues after} Rc3 38. Kh1 Rg6 39. Rg1 Rc1 $3 {[#]} 40. Nxc1 Rxg2 41. Rxg2 Qd1+
42. Rg1 Qxf3+) 35. Nc7 $2 {This is just too fancy. With the hard work behind
her, Ni misses an easy shot that wins her a pawn.} (35. f4 {and the fall of
the e5 pawn should prove decisive. Instead, her knights get disconnected and
her advantage is no more.}) 35... Red8 {And the tables have turned, suddenly
it is White who is in trouble.} ({As White's second rank is irreperably
exposed, Gunina's rook can't be captured. White is in grave danger after} 35...
Qd2 {as well.}) 36. Rxe5 $4 {Mistakes often come in pairs. Ni's misfortune
continued, since the rook is needed to defend the last rank.} ({At this point,
Ni only had one option that looks to give her decent drawing chances.} 36. Nd5
Rc2 37. Nf2 Rc1 38. Nd3 Rxe1+ 39. Nxe1 Qd2 40. Kf1 Qxa2 {Considering that
knights tend to be reliable blockaders, a draw is certainly attainable.}) 36...
Qd2 37. Re7 ({Now} 37. Nd5 {isn't reliable because the threat of back rank
checkmate forces White to pin her own knight.} Rb8 38. Nb6 Qxa2 {Black should
soon win one of the knights. With so many pieces on the board, there is no
hope for a fortress.}) 37... Rb8 38. Qe5 Qxd3 {Now that Black has gone up
substantial material, the rest is straightforward.} 39. h4 Qe3+ 40. Qxe3 dxe3
41. Rxe3 Rd2 42. Re4 f5 43. Re7 Rb7 44. Kh2 Kf8 45. Re8+ Kf7 46. Rc8 f4 47. Kh3
h5 48. Na6 Rb1 49. Rc7+ Kg8 50. Kh2 Rbb2 51. Rc8+ Kh7 52. Rc5 Rxg2+ 53. Kh1
Rh2+ 54. Kg1 Rbg2+ 55. Kf1 Rxa2 56. Rxh5+ Kg8 0-1

[Event "US World Amateur Team"]
[Site "Shredder for iPad"]
[Date "2017.02.20"]
[Round "?"]
[White "Wang, Wesley"]
[Black "Nakada, Akira"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2286"]
[BlackElo "2263"]
[Annotator "Wang, Wesley"]
[PlyCount "81"]
[EventDate "2017.??.??"]

1. e4 {I would like to point out that, in my opinion, this is the best game
I've played thus far. It being the last round of the U.S. Amateur Team East 
(which our team ended up winning), made it all the more special.} e6 2. d4 d5
3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8. Nb3 Nc6 9. Nbxd4
Nxd4 10. Nxd4 a6 11. Bb3 Qc7 {Diagram [#] Here the main line continues 12. Re1.
Before the game, I had spent some time prepping for my game against Akira,
whom I am on relatively familiar terms with and had played a few months back;
it was safe to assume he would play a Tarrasch French.} 12. Qf3 {Since 12. Re1
leads to a drawish position and I figured my team would need a win from me, I
opted to take a different approach that I scavenged from the database.} Bd6 13.
h3 O-O 14. Bg5 Nd7 15. c3 h6 16. Be3 b6 $5 {Allowing a trade of two rooks for
queen. I considered 17. Qxa8, but opted for a more simple move:} 17. Rad1 $6 {
Subpar. This shifts the momentum in Black's favor.} (17. Qxa8 Bb7 18. Qa7 Ra8
19. Qxa8+ Bxa8 20. Rad1 $11 {Chances for both sides.}) 17... Bb7 18. Qe2 Nf6
19. a4 {Fixes his pawn on b6 and makes it harder to play b5 and gain play on
the queenside.} Rfd8 {Black gets his dream position and is left slightly
better. His well-placed bishops are the main contributing factors to his
advantage. His ensuing plan is simple; Nd5, Nf4, targeting a trade with my
bishop on e3. With my opposing dark square bishop gone, Akira's bishops become
even stronger. I had a feeling the game was approaching a critical point.} 20.
Kh1 $6 {Not the best move. My plan was to prepare an attack on the kingside,
and I thought Bh2+ in certain lines would be irritating.} (20. Bc2 {is better.}
Nd5 21. Qd3 {is the idea.}) 20... Nd5 21. Qg4 {Diagram [#]} Nxe3 $6 {Allowing
me to seize the initiative; my rooks will double on the f-file and pressure f7.
} (21... Kh8 22. Bc2 Nf4 23. f3 Nd5 $17 {Although it is easy to underestimate
my attack, Black was clearly better off playing 21... Kh8 and avoiding Bxh6.})
22. fxe3 Bc8 {The only other option that defends against Rxf7 was Kh8, which
allows the following combination:} (22... Kh8 23. Nxe6 fxe6 24. Qg6 Qc6 $1 25.
Bc2 Qxg2+ 26. Qxg2 Bxg2+ 27. Kxg2 $14 {White remains slightly better due to
the poor placement of the rooks.}) 23. Rf2 Ra7 $2 {A blunder. Better was 23...
Be5 in preperation for Nxe6.} (23... Be5 24. Bc2 f5 25. Qf3 Bxd4 26. exd4 Bb7
27. Qe2 Bd5 $14) 24. Rdf1 $2 {I return the favor. I missed the relatively
simple tactical shot:} (24. Nxe6 $1 Bxe6 25. Bxe6 fxe6 (25... Qc5 {is probably
the best.} 26. Bxf7+ $1 Rxf7 27. Qe6 Qc7 28. Rxf7 Qxf7 29. Rxd6 Rxd6 30. Qxd6
Qb3 {Although perpetual check is always lingering, this should not be too hard
to win.} 31. Qb4 Qe6 32. e4 $18) 26. Qxe6+ Kh8 27. Rfd2 Qf7 28. Qxf7 Rxf7 29.
Rxd6 Rf1+ 30. Rxf1 Rxd6 {Two pawns and a likely comfortable win for White.})
24... Qc5 $1 {The best defense. Next, -> Qe5 -> Qh2# is quite a nuisance.} 25.
Qe4 Bb7 (25... Qe5 $4 26. Qxe5 Bxe5 27. Nc6 $18) 26. Qh4 Rf8 $2 {Diagram [#]
This natural-looking move is a huge blunder. But my combination is very
deceptive: let's be real here, there is no way my opponent could have saw the
powerful tactical blow...} (26... Be7 27. Qg4 (27. Qg3 Bd6 28. Qh4 Be7 $11)
27... h5 28. Qe2 Bf6 29. Bxe6 fxe6 30. Nxe6 Qd5 31. Nxd8 Qxd8 32. Qxh5 $14 {
Black's best choice.}) 27. Rxf7 $3 {Finally! The star move of the game.} Rxf7
28. Qd8+ $1 (28. Bxe6 $4 Bd5 29. Bxf7+ Rxf7 $19) (28. Rxf7 {The other option,
but leads to a perpetual.} Kxf7 29. Nxe6 Qxe3 30. Nc7+ Kg6 31. Bc2+ Kf7 32.
Bb3+ $11) 28... Kh7 {The other options include 28... Bf8 and 28... Rf8.} (28...
Bf8 {Probably the best try.} 29. Rxf7 Bxg2+ 30. Kxg2 Rxf7 31. Bxe6 Qe5 32.
Bxf7+ Kxf7 33. Qxb6 Qxe3 34. Qxa6 $16) (28... Rf8 29. Rxf8+ Bxf8 30. Nxe6 $18 {
Everything will be lost.} Qxe3 31. Qxf8+ Kh7 32. Qxg7#) 29. Bc2+ $1 {An
important addition. It's imperative not to blunder with:} (29. Rxf7 $4 Bxg2+
30. Kxg2 Rxf7 $19) 29... Be4 $1 {The best try, protecting the rook on f7.
During the game, this move shocked me. I would've loved to say I saw my whole
combination from start to finish, but I really didn't. This was defense I
missed, yet I got lucky to find the finish.} (29... g6 $4 30. Rxf7#) 30. Bxe4+
g6 {Diagram [#] Akira might've thought he was okay here. The dust has cleared
the board, and Black seems to have a comfortable material advantage. However,
here comes the second tactical barrage:} 31. Bxg6+ $3 Kxg6 32. Qg8+ Rg7 {
Diagram [#]} 33. Rf6+ $1 {Brilliant, in my humble opinion. Maybe the most
satisfying move I've ever played. The computer announces a mate in 7.} (33.
Qxe6+ Kh7 34. Rf6 Qg5 35. Qe4+ Kh8 36. Rxd6 {This is also better for white,
but my actual move is completely winning.}) 33... Kh5 (33... Kxf6 34. Qxe6+ Kg5
35. Nf3+ Kh5 36. g4+ Rxg4 {Pick your favorite piece to mate with :)}) 34. Qxe6
Kh4 {Black tries to escape. It looks like game over here, but if White isn't
careful, Black's king can travel to the queenside and hide.} (34... Qg5 35.
Rxh6+ $1 Qxh6 36. g4+ Kh4 (36... Kg5 37. Nf3#) 37. Kg2 $3 {And Nf3#. Truly a
beautiful mate. Although of course, to ruin the fun, white can also play 37.
Qxh6+ and Qxd6+, but that's besides the point.}) 35. Qe4+ (35. g3+ {is a
quicker mate, but who really cares?}) 35... Kg5 36. h4+ {There are many ways
to win; I chose the one that I believed to have the most "style."} Kh5 (36...
Kxf6 37. Qe6#) 37. Rf5+ Qxf5 38. Qxf5+ Kxh4 39. Nf3+ Kg3 40. Kg1 $1 {The final
finesse, threatening Qh3#.} Rg4 41. Qh5 {A picturesque final position.} 1-0

[Event "Baku ol (Men) 42nd"]
[Site "Baku"]
[Date "2016.09.08"]
[Round "6.1"]
[White "Caruana, Fabiano"]
[Black "Eljanov, Pavel"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2808"]
[BlackElo "2739"]
[Annotator "Hess, R"]
[PlyCount "105"]
[EventDate "2016.09.02"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "AZE"]
[Source "Chessbase"]
[SourceDate "2016.09.18"]
[WhiteTeam "US of America"]
[BlackTeam "Ukraine"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "UKR"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 {The Rossolimo is a staple of Caruana's opening
repertoire, so Eljanov must have been thought his chances in this variation
were good. The choice was a good one, as the Ukrainian actually obtained a
very solid position.} g6 4. Bxc6 bxc6 (4... dxc6 {Magnus Carlsen used this
recapture to defeat Caruana in the 2015 Tata Steel tournament, though the
opening was not where the world champion made his mark in that game.
Additionally, the American board one scored a strong victory over Teimour
Radjabov only a few months earlier in this line, perhaps an indication to
Eljanov that he should recapture towards the center.}) 5. O-O Bg7 6. Re1 Nh6 {
This is by far the most common continuation, though it admittedly looks quite
strange. The point is that 6...Nf6 invites the e4-e5 push, whereas now Black
can challenge the center with f7-f5, as in the game.} 7. c3 O-O 8. h3 (8. d4 {
is most common. Though it undoubles the c-pawns, this move helps take control
of the center. The change in structure provides mutual chances.} cxd4 9. cxd4
d5 {leaves black with a very respectable position.} (9... f6 {is also
perfectly acceptable, although a bit more cramped.})) 8... f5 ({Boris Gelfand
is a renowned Rossolimo theoretician and has been a big proponent of} 8... d5 {
though Anand's victory over the Israeli super GM at the 2016 Tal Memorial
might cause Gelfand to rethink. It must be noted that that game occurred weeks
after this one, so Caruana and Eljanov were not privy to that analysis.}) 9. e5
Nf7 10. d3 Rb8 ({Giri and Gelfand have both tried} 10... Ba6 {and split the
point against Adams and Inarkiev, respectfully.}) 11. Na3 {A new move in a
rare position, this novelty does not appear to have any theoretical
significance. It merely develops the knight without obstructing the bishop.}
Ba6 12. Nc4 Bxc4 13. dxc4 {An interesting pawn transformaton has appeared on
the board. Caruana actively avoided undoubling Eljanov's pawns, but received a
pair of doubled c-pawns himself. The rook on b8 currently serves as the sole
active black piece, so Eljanov now makes the necessary decision to gain some
space and activity.} d6 14. e6 Ne5 15. Nxe5 Bxe5 (15... dxe5 {is a
surprisingly interesting possibility. It generally is not recommended to
isolate your existing doubled pawns while simultaneously creating new ones,
but now the e6 pawn can be corralled and the kingside pawns can start moving.
For example, a normal-looking line such as} 16. Qa4 Qd6 17. Qxa7 Qxe6 18. Qxc5
e4 19. a4 (19. f4 g5 $5 {opening more lines is important, even if it costs
another pawn.}) 19... f4 {results in a double-edged position, where it's
unclear if a successful attack or a new queen appears first.}) 16. Bh6 Bg7 ({
When our bishops are fianchettoed, we often avoid trading to keep the squares
around the king well defended. Here, however} 16... Re8 {makes little sense,
since the bishop on h6 will eventually need to be removed before it is too
late.}) 17. Bxg7 Kxg7 18. Rb1 Qa5 19. a4 {White is now tied down to the
defense of the vulnerable queenside pawns, whereas Eljanov has a semi-open
file to work with and endgames can be problematic for Caruana, whose e6 pawn
will become a liability. That being said, the position is level, as Caruana
can always calmly protect his queenside and threaten an attack on the kingside
if Eljanov moves all his pieces to the b-file.} Rf6 (19... Rb6 20. Qc2 Rfb8 21.
b3 Qa6 {naturally aiming to triple the artillery actually allows a nice shot:}
22. a5 $1 (22. Rb2 Qb7 23. Reb1 Qc8 24. Qe2 a5 {is equal, if not a smidgen
better for Eljanov.}) 22... R6b7 (22... Qxa5 $4 23. Ra1 {and the queen is
trapped.}) 23. Qa2 {and now it is the black pieces that are a bit stuck,
though the position still remains roughly equal.}) 20. Re3 Qa6 21. b3 Qc8 22.
Qe1 {This is an intelligent multi-purpose move. For starters, e6 is now
defended. But the queen also helps Caruana with a b3-b4, giving his pieces
some life.} (22. Qe2 f4 23. Re4 f3 {would not have been a welcome pawn
sacrifice for Caruana, whose kingside now is in shambles.} 24. gxf3 Qf8 25. Kg2
Rf5 {and despite the material count, it is now very clear who is better.})
22... a5 $6 {To an extent, this is a natural move. It clamps down on the b4
square, but this plan would be much better if the second rook was on b7 rather
than f6. Now Eljanov has invited Caruana to create a passed pawn.} 23. b4 axb4
24. cxb4 cxb4 25. Rxb4 Ra8 ({Black can safely liquify and hold a draw with} 
25... Rxb4 26. Qxb4 Rxe6 27. Rxe6 Qxe6 28. Qc3+ (28. a5 Qe5 {secures an easy
draw. Black is a pawn to the good, but the a-pawn proves more than enough
compensation. In fact, it is Eljanov who would be forced to bail out:} 29. Qb6
Qa1+ 30. Kh2 Qe5+ 31. g3 f4 32. a6 fxg3+ 33. fxg3 Qe2+ {and perpetual check
ensues.}) 28... Kf7 29. a5 Qc8 30. Qb3 Qa6 31. c5+ (31. Qb6 Qxc4 32. a6 c5 {
cuts the queen off from its defense of f2, meaning the game will result in
perpetual.}) 31... d5 32. Qb6 Qc4 33. Qxc6 Qc1+ 34. Kh2 Qf4+ 35. Kg1 Qc1+ {
with a draw.}) 26. Qa1 (26. c5 $1 dxc5 27. Rc4 {gives a slight edge with no
risk whatsoever. However, I can understand Caruana's reluctance to simplify,
as his team needed his full point to defeat the Ukrainians.}) 26... f4 (26...
Kg8 {Starting with this move should be an improvement. The black pawn on f5 is
well defended, while on f3 it is a liability.}) 27. Re4 f3 28. g4 Kg8 29. Qd1
Rxe6 (29... c5 30. Rb5 {feels incorrect for Eljanov. The rook is happily
stationed on b5, where it can help support the outside passer. Meanwhile, e6
remains untouchable due to Qd5. However, after} Qf8 {Black seems to get enough
counterplay to hold.}) 30. Qxf3 Rxe4 $2 {This is a tremendous inaccuracy,
after which Eljanov is in deep trouble.} (30... d5 {was necessary, as it
allows some air to breathe. The game continuation forces Eljanov into passive
defense.}) 31. Qxe4 Qc7 32. c5 $1 {Very strong, ruining the black pawn
structure.} dxc5 (32... d5 33. Qe6+ Kf8 34. Rb6 {spells huge trouble for
Eljanov, who can hardly defend his pawns and his exposed king.}) 33. Qc4+ Kg7
34. Qc3+ Kg8 35. Qc4+ Kg7 36. Qxc5 {The repetition was played to gain time, as
the players approached move 40. Now Caruana has a large advantage thanks to
his superior pawn structure, safer king, and outsided passed pawn.} Qd6 (36...
Ra5 37. Qe3 Qd6 38. Re4 (38. Rd4 Rd5 39. Rxd5 cxd5 40. a5 d4 41. Qd3 e5 42. a6
e4 43. Qxe4 Qxa6 44. Qxd4+ {is not an enjoyable position to defend, but there
are legitimate practical chances to hold.}) 38... e5 {and at least here
Eljanov's pieces are active.}) 37. Qc3+ Qf6 38. Qe3 Rf8 39. Re4 Rf7 40. Re5 {
The rook and queen are coordinated very well. The pawns on c6 and e7 are both
very weak, and the a-pawn can be used as a distraction. White's queen and rook
harmoniously attack and defend simultaneously, whereas their counterparts are
stuck defending.} Qd6 ({Attempting to trade queens with} 40... Qf4 {fails
tactically to the forced variation} 41. Rxe7 Qxa4 (41... Qxe3 42. Rxf7+ Kxf7
43. fxe3 {with a winning pawn ending.}) 42. Qe5+ Kg8 43. Re8+ Rf8 44. Qe6+ Kg7
45. Re7+ Kh6 46. Qd7 {and Eljanov's king is successfully hunted.} Rh8 47. Qd2+
g5 48. Qd6#) 41. a5 Qd1+ 42. Kg2 Qa1 43. Qe2 (43. Rxe7 Qxa5 44. Qd4+ Kg8 45.
Re8+ Rf8 {isn't quite as nice for Caruana as the previous note, because the
king isn't getting mated. White goes up a pawn nonetheless:} 46. Rxf8+ Kxf8 47.
Qh8+ Kf7 48. Qxh7+ Kf6 {Black still retains drawing chances thanks to the
passed c-pawn, so it was wise for Caruana to avoid this continuation.}) 43...
e6 44. a6 Qd4 (44... Ra7 {does not actually corral the a-pawn, since} 45. Rxe6
Qxa6 46. Qe5+ {leads to a swift mate.} Kh6 47. Qf4+ Kg7 48. Qf6+ Kh6 49. Qf8+
Rg7 50. Qf4#) 45. Rxe6 {Now it's over. Not because of the gained material, but
because Eljanov is unable to stop the passed pawn and save his king.} c5 46.
Re7 Qd5+ 47. f3 c4 48. Rxf7+ Qxf7 49. Qe5+ Kh6 (49... Kg8 50. Qb8+ Kg7 51. a7
Qd5 52. a8=Q Qd2+ 53. Kg3 Qe1+ 54. Kf4 Qd2+ 55. Ke5 {does not result in a
perpetual, as the king escapes and the queens come to the rescue.}) 50. Qe3+
Kg7 51. Qd4+ Kh6 52. a7 Qb7 53. h4 {The a-pawn is frozen, but so is the black
king. Mate is unstoppable, causing Eljanov to tip his king. A fine showing by
Caruana, who nursed positional advantages into a full point.} 1-0

[Event "US Amateur Team East"]
[Site "?"]
[Date "2017.02.19"]
[Round "3"]
[White "Li, Ethan"]
[Black "GM Yudasin, Leonid"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2396"]
[BlackElo "2594"]
[Annotator "Li, Ethan"]
[PlyCount "93"]
[EventDate "2017.??.??"]
[Source "Chessbase"]
[SourceDate "2016.09.18"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 Nc6 5. O-O d5 6. b3 Qc7 7. Bb2 cxd4 8. exd4
Nb4 9. Bb5+ Bd7 10. Bxd7+ Nxd7 11. c3 Nc6 12. Qe2 Be7 13. Ba3 O-O 14. Bxe7 Nxe7
15. c4 Nf5 16. Nbd2 dxc4 17. bxc4 Rac8 18. Rac1 Rfd8 19. Rfd1 Nf6 20. Nb3 Qf4
21. Qe5 Qxe5 22. dxe5 Nd7 23. g4 Ne7 24. Rd6 Kf8 25. Na5 Nc5 26. Rcd1 Rxd6 27.
exd6 Ng6 28. Nd4 Ne5 29. Ndb3 Ned7 30. Nd4 Ne5 31. f4 Nxg4 32. Ndb3 Nd7 33. c5
Rb8 {Diagram [#] (Tactic starts here haha :>>) I had calculated a rather
lengthy tactic here. If I were one move slower or he had a single extra move
the combination would not work.} 34. Nxb7 Rxb7 35. c6 Rb8 36. cxd7 Nf6 (36...
Rd8 {is simply refuted by} 37. Rc1 {the d6 pawn shuts out Black's king}) 37.
Nc5 g6 ({if} 37... Rd8 38. Rc1 {The pawn is untouchable and Black is
defenseless against Nxe6+} g6 39. Nxe6+ {It is crucial that the king cannot
escape the eighth rank} fxe6 40. Rc8 $18) 38. Rc1 $1 {With the idea of Nb7} Kg7
39. Nb7 $1 Nxd7 40. Rc7 $18 {The rook penetrates the seventh rank just in time.
It simultaneously supports the advance of the pawn and defends the white
knight on b7} Nf6 41. d7 Nxd7 (41... Nd5 42. Rc8) 42. Rxd7 {Here I am much
better. I am up a piece and Black's seventh rank pawns are big targets.
Unfortunately, I played carelessly and my experienced Grandmaster opponent
exploited my inaccuracies to escape with a draw.} Rc8 43. Rxf7+ Kg8 44. Re7
Rc1+ 45. Kg2 Rc2+ 46. Kg3 Rxa2 47. Nd8 1/2-1/2

[Event "US Amateur Team East"]
[Site "?"]
[Date "2017.02.20"]
[Round "5"]
[White "FM Li, Ethan"]
[Black "WFM Yip, Carissa"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2396"]
[BlackElo "2348"]
[Annotator "Li, Ethan"]
[PlyCount "77"]
[EventDate "2017.??.??"]
[Source "Chessbase"]
[SourceDate "2016.09.18"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. e3 O-O 5. Be2 d6 6. Nc3 Nc6 7. d5 Nb8 8. O-O
e5 9. Qc2 Nbd7 10. Rb1 a5 11. b3 Nc5 12. Nd2 Nfd7 13. a3 f5 14. b4 Na6 15. e4
Nf6 16. Rd1 (16. exf5 gxf5) 16... f4 17. c5 g5 18. Nc4 axb4 19. axb4 g4 20. g3
h5 21. gxf4 exf4 22. e5 dxe5 23. Bd3 e4 24. Nxe4 Nxd5 {Diagram [#] (Puzzle
starts here) There were a myriad of complex positional subtleties in the moves
before this, but the tactic here is absolutely crucial to justifying the
previous play. Otherwise all of it would be inaccurate.} 25. Ncd6 $1 {With
this move I was able to involve all my pieces in the game. The subsequent Bc4
results in devastation on Black's light squares -- there is no defense} cxd6
26. Bc4 Be6 27. Bxd5 Bxd5 28. Rxd5 $18 {Black's position crumbles} Qh4 $2 29.
Qc4 $6 {missing an obvious win} (29. Ng5 {wins on the spot. The attack is
unstoppable} Rf7 30. Qh7+ Kf8 31. Bb2 $18) 29... Kh8 30. cxd6 Rac8 31. Qb5 {
[%csl Rh5]} Nc5 32. Rxc5 Rxc5 33. Qxc5 Qh3 34. Bb2 Bxb2 35. Rxb2 g3 36. Qe5+
Kg8 37. Qg5+ Kh8 38. Qh6+ Kg8 39. Qh7+ 1-0

[Event "US Amateur Team East"]
[Site "?"]
[Date "2017.02.20"]
[Round "6"]
[White "FM Niemann, Hans"]
[Black "FM Li, Ethan"]
[Result "0-1"]
[ECO "E31"]
[WhiteElo "2405"]
[BlackElo "2396"]
[Annotator "Li, Ethan"]
[PlyCount "70"]
[EventDate "2017.??.??"]
[Source "Chessbase"]
[SourceDate "2016.09.18"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 c5 5. d5 d6 6. e3 h6 7. Bh4 Qe7 8. Nf3
Nbd7 9. dxe6 Bxc3+ 10. bxc3 Qxe6 11. Be2 O-O 12. O-O b6 13. Bg3 Ne4 14. Qd3 Ba6
15. Rfd1 Ndf6 16. Bf1 Rfd8 17. Nd2 Rd7 (17... Nxg3 18. hxg3 d5 19. cxd5 Bxd3
20. dxe6 Bc2) 18. Nxe4 Nxe4 19. f3 Nxg3 20. hxg3 Re8 21. e4 Qe5 22. Kf2 {
Diagram [#] (puzzle starts here) This move is highly suspect, but at the same
time very logical. It seems as if White's king is very safe behind his pawns}
d5 $1 {White's position crumbles} 23. f4 {I believe my opponent miscalculated.
The obvious ...Qxe4 is certainly bad, but the text move simply wins a pawn} (
23. Qc2 {is best objectively, but even here I am able to create a passed pawn
and exert pressure} d4 24. Qa4 Bc8 $17) (23. exd5 $2 {is of course, a blunder}
Bxc4 {The bishop is immune since White's queen must guard against ...Qe3#} 24.
Qd2 Rxd5 $19) 23... Qe7 $17 (23... Qxe4 $4 {would have ended tragically} 24.
Re1 $18) 24. exd5 Bxc4 25. Qf3 Bxd5 $19 {Again, White cannot take on d5
because he has to guard the e3 square -- the queen is overloaded. I have won a
pawn, and White's king is still dangerously exposed. The conversion is not too
difficult.} 26. Qe2 Qd8 27. Qb5 Be6 28. Be2 Qe7 29. Bf3 Rxd1 30. Rxd1 Bxa2 31.
Qd3 Bb3 32. Rb1 c4 33. Qf5 Qe3+ 34. Kf1 g6 35. Qf6 Bc2 0-1

[Event "USAT 2017"]
[Site "?"]
[Date "2017.02.19"]
[Round "3"]
[White "Schmakel, S."]
[Black "Ramer, S."]
[Result "1-0"]
[ECO "B42"]
[Annotator "Dynako, Betsy"]
[PlyCount "81"]
[EventDate "2017.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Be7 7. Qg4 g6 8. Qe2
d6 9. O-O Nd7 10. Nc3 Qc7 11. Bd2 b6 12. Rae1 Bb7 13. f4 h5 14. h3 h4 {Diagram
[#]} (14... Bh4) 15. e5 (15. Nd4 $1) 15... d5 16. Nd4 Nh6 17. Qf2 Nf5 18. Nce2
Nc5 19. Be3 Qd7 20. a3 Rc8 21. Rc1 Kf8 22. Kh2 Qd8 23. b4 Na4 24. Nxf5 gxf5 25.
Bd4 b5 26. Rg1 Ke8 27. Qe3 Rg8 28. g4 hxg3+ 29. Nxg3 Kd7 {Diagram [#]} 30. Nh5
(30. Nxf5 exf5 31. Bxf5+ Kc7 32. Bxc8 (32. Rxg8 Qxg8 33. Rg1 Qh8 34. Bxc8 Bxc8
35. e6 f6 36. Rg6) 32... Bxc8) 30... Qc7 31. Nf6+ (31. Rxg8 Rxg8 32. Rg1 Rxg1
33. Qxg1 Nc3 (33... Bh4)) 31... Bxf6 32. exf6 Rcf8 33. Rg7 Kc8 34. Qe5 Rh8 35.
Re1 (35. Rcg1) 35... Bc6 36. Qxc7+ Kxc7 37. Rxe6 Rh4 38. Re7+ Kd8 39. Kg3 Rfh8
40. Bxf5 Be8 41. Be5 1-0

[Event "2017 U.S. Amateur Team West"]
[Site "?"]
[Date "2017.02.19"]
[Round "4"]
[White "Pruess, David"]
[Black "Zierk, Steven"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2336"]
[BlackElo "2493"]
[Annotator "Kavutskiy, Kostya"]
[PlyCount "71"]
[EventDate "2017.??.??"]
[SourceDate "2009.02.28"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 {This move is known
as the sharpest way of facing the Najdorf. Both Caruana and Nakamura recently
used this line to win fantastic games at the 2016 London Classic.} e6 7. f4 Be7
{A more measured approach.} (7... Qb6 {leads into the famous 'Poisoned Pawn'
variation.}) 8. Qf3 Qc7 9. O-O-O Nbd7 10. Bd3 b5 11. Rhe1 Bb7 12. Qh3 $5 {
Pruess eyes the h3-c8 diagonal, knowing that Black is most likely going to
castle queenside in this line.} ({Also common is} 12. Qg3 {supporting e4-e5.})
12... O-O-O ({In case of} 12... b4 {White would most likely go for the
thematic sacrifice} 13. Nd5 $1 exd5 14. exd5 {Giving White huge play in the
center and kingside. For instance} Kd8 15. Rxe7 $1 Kxe7 16. Nf5+ Kf8 17. Nxg7
$1 {leads to a very messy position. Stockfish will give 0.00, yet the lines
are anything but clear!}) 13. Bxb5 $5 $146 {[#] Despite a small number of
games having reached this position, no player has dared to play this thematic
sacrifice! Other games have continued along 'normal' lines such as Kb1 and
e4-e5.} axb5 14. Ncxb5 {White gets two pawns for the piece, along with open
files against Black's king. If he gets enough time to lift his rooks via the
3rd rank, the attack should succeed. But Black's position is quite resilient!}
Qc5 15. b4 $5 {According to David, the only move to get Black's queen away
from guarding the e5-square!} Qxb4 16. e5 dxe5 17. fxe5 Nd5 18. Bxe7 Nxe7 ({
Apparently} 18... Qxe7 $1 {was stronger, since after} 19. Nd6+ Kb8 $17 {
White doesn't have an immediate follow-up, while after Nc5 Black will
seemingly control the queenside.}) 19. Nd6+ ({Actually White could invade
immediately with} 19. Re3 $1 Bd5 20. Rc3+ Kb8 21. Nc7 $40 {and Black has to be
very accurate not to lose on the spot.}) 19... Kb8 20. Nxf7 {[#]} Nc5 $1 {
Zierk correctly offers back some material in order to activate his pieces. Now
Black has a winning advantage, but things are never simple in the Open
Sicilian.} 21. a3 Qc4 (21... Qa5 $19 {was also worth considering, keeping an
eye on the a3-pawn.}) 22. Nd6 Rxd6 $6 {The intention makes sense, to get rid
of White's powerful knight, but now this gives White an annoying d-pawn and
pressure against e6.} ({After} 22... Qa6 $17 {Black has full control.}) 23.
exd6 Nd5 24. Nxe6 Nxe6 25. Qxe6 Rc8 26. Re2 Qc5 {[#] The position has become
balanced. White is up in material with a rook and three pawns against two
pieces, but Black has immediate counterplay against White's king.} 27. d7 Qxa3+
28. Kd2 Qa5+ 29. Kc1 Rd8 {Given the match situation, Zierk most likely felt he
had to play for a win, but objectively Black is taking on a ton of risk by
playing on.} ({Repeating with} 29... Qa3+ $11 {would force a draw.}) 30. Qd6+
Qc7 $2 {The losing move.} ({Best was} 30... Ka7 {and after} 31. Re8 Qa1+ 32.
Kd2 Qa5+ $11 {Black must force a draw by perpetual.}) 31. Rxd5 $1 {[#] White
wins back the material and achieves a winning heavy piece endgame.} Bxd5 32.
Qxd5 Rxd7 {White is only up one pawn, but that pawn shields the king!
Meanwhile, Black's king goes down to a series of checks:} 33. Re8+ Ka7 34. Ra8+
Kb6 35. Qa5+ Kc6 36. Ra6+ ({And Black resigned since mate is inevitable after} 
36. Ra6+ Kb7 37. Qb5+ Kc8 38. Ra8+) 1-0

[Event "2017 U.S. Amateur Team West"]
[Site "?"]
[Date "2017.02.20"]
[Round "6"]
[White "Zhu, Jack"]
[Black "Manvelyan, Hayk"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2439"]
[BlackElo "2189"]
[Annotator "Kavutskiy, Kostya"]
[PlyCount "112"]
[EventDate "2017.??.??"]
[SourceDate "2009.02.28"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 {This system is fairly provocative, and differs
greatly from typical Ruy Lopez lines after 3...a6.} 4. d4 exd4 5. Nxd4 Bg7 6.
Nxc6 bxc6 7. Bc4 Ne7 8. Nc3 O-O 9. O-O d6 10. Bg5 Be6 11. Bb3 Qd7 {[#] So far
all the moves from both sides have been pretty standard.} 12. Qd3 {I wouldn't
call this inaccurate, but White changes course on the very next move.} Kh8 13.
Qd2 {Opting to trade the dark-squared bishops. Of course this would be better
on the previous move.} ({Other options were} 13. f4) ({and} 13. Rad1) 13... a5
14. Bh6 Bxh6 15. Qxh6 c5 16. Rad1 f5 $6 {A very risky move.} (16... Bxb3 17.
axb3 Nc6 $11 {would have kept the game more or less balanced, as White's e4-e5
break is under control.}) 17. Rfe1 ({Here White missed a chance for a big
advantage with} 17. Ba4 c6 18. e5 $1 d5 19. Ne2 $1 $16 {Followed by Nf4-d3, as
well as c2-c3, and Black's position will be under a lot of stress.}) 17... f4
18. Ba4 Qd8 {[#] Setting a nice trap.} 19. Qg5 (19. e5 $2 Ng8 $1 $19 {And
White must give up the queen!}) 19... f3 {This pawn provides Black some
counterplay, but just by looking at the piece placement it's clear that White
is on top.} 20. g3 ({Once again White needed to play in the center:} 20. e5 d5
21. Ne4 $1 {After} Rf5 22. Qh4 {the e-pawn is poisoned:} Rxe5 $2 23. Qf6+ $18)
20... c6 21. h4 ({Seems like both players missed} 21. Qd2 $1 $18 {and Black
has no good way of defending the d6-pawn. White is breaking through.}) 21...
Qc7 22. Re3 Kg7 {[#]} 23. h5 $2 {A serious strategic mistake, allowing Black
to completely shut White's queen out of the game.} (23. Red3 {was natural and
strong, putting a lot of pressure on d6.} h6 (23... Rad8 {runs into} 24. Rxd6
$1 Rxd6 25. Qe5+ $18) 24. Qe3 Rad8 25. Bb3 $16 {looks excellent for White.})
23... h6 24. Qh4 g5 25. Qh1 g4 {After missing several opportunities White is
now in big trouble. Black has fortified the pawns on the kingside and now
dominates most of the board.} 26. Qh4 Ng8 $1 {Avoiding a nice trick by White.}
({In case of a move like} 26... Rad8 {White would have a fantastic resource in}
27. Nd5 $1 cxd5 28. exd5 Nxd5 29. Rxe6 Nf6 30. Rde1 Rf7 31. c3 $1 $40 {and the
bishop rejoins the action through the b1-h7 diagonal.}) 27. Rde1 {White is
hard-pressed to find any counterplay here. The problem is that all of White's
pieces, especially the light-squared bishop, are shut out from doing anything
active.} Rab8 28. b3 Rf7 $1 {A very strong prophylactic move, preventing any
ideas with Nd5 followed by Re7!} ({For instance} 28... Rbd8 {would run into}
29. Nd5 $1 cxd5 30. exd5 Bd7 (30... Bxd5 31. Re7+ Nxe7 32. Rxe7+ $18) 31. Bxd7
Rxd7 32. Qxg4+ Kh8 33. Rxf3 $13 {and White has some serious compensation for
the piece.}) 29. Nb1 Re8 30. c4 Bd7 31. Nc3 Re5 $19 {[#] Now White is totally
cut off from any play and Black is just winning. Next is Nf6 & Rxh5.} 32. Kf1
Nf6 33. Qh1 Rxh5 34. Qg1 Be8 35. Rd1 Re7 36. Ke1 Rhe5 37. Kd2 Nxe4+ 38. Nxe4
Rxe4 39. Rxe4 Rxe4 40. Re1 Qe7 41. Rxe4 Qxe4 42. Qa1+ Qe5 43. Qxe5+ dxe5 {
This endgame is simply hopeless for White. Black is two pawns up and White
must give up a third pawn just to free the light-squared bishop.} 44. b4 cxb4
45. Kd3 Kf6 46. c5 Ke6 47. Bb3+ Kf5 48. Bc4 Kf6 49. Bb3 Bf7 50. Ba4 Bd5 51. Ke3
Ke6 52. Kd3 Kd7 53. a3 bxa3 54. Kc3 a2 55. Kb2 Ke6 56. Bc2 e4 0-1

[Event "2017 U.S. Amateur Team Champ. South"]
[Site "?"]
[Date "2017.02.19"]
[Round "5"]
[White "FM Corey Acor"]
[Black "Eric Cooke"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2364"]
[BlackElo "2274"]
[Annotator "Silva, Ben"]
[PlyCount "107"]

1. e4 e6 2. d3 c5 3. g3 Nc6 4. Bg2 g6 5. Nc3 Bg7 6. Be3 d6 7. Qd2 Nd4 8. Nd1 e5
9. c3 Ne6 10. Ne2 f5 11. d4 fxe4 12. d5 Nc7 13. c4 b5 14. b3 bxc4 15. bxc4 Nf6
16. Nec3 O-O 17. Bg5 Rb8 18. Nxe4 Bf5 19. h3 Rb4 20. Rc1 Nce8 21. Nxf6+ Nxf6
22. g4 Bd7 23. O-O Qb6 24. f4 exf4 25. Bxf4 Ne8 26. Bh6 Rxf1+ 27. Bxf1 Rb1 28.
Bxg7 Nxg7 29. Rxb1 Qxb1 30. Nc3 Qb8 {Diagram [#]} 31. Ne4 Qf8 32. Bg2 Ne8 33.
Qa5 Nf6 34. Nf2 Qb8 35. Bf3 Qb6 36. Qe1 Qd8 37. g5 Ne8 38. Qe3 Ng7 39. h4 Qe8
40. Ne4 Kh8 41. Qf4 Nf5 42. Bg4 Qb8 43. Bxf5 Bxf5 44. Nxd6 Qb1+ 45. Qf1 Qxa2
46. Qe1 Qa4 47. h5 Qd7 48. Qe5+ Kg8 49. Ne8 Kf7 50. Nd6+ Kg8 51. h6 a5 52. Nb7
a4 53. Nxc5 Qd8 54. Qg7# 1-0

[Event "2017 U.S. Amateur Team Champ. South"]
[Site "?"]
[Date "2017.02.17"]
[Round "?"]
[White "Victor Barrios"]
[Black "Yevgeny Postrekhin"]
[Result "1-0"]
[WhiteElo "1905"]
[BlackElo "2033"]
[Annotator "Silva, Ben"]
[SetUp "1"]
[FEN "1B4k1/p2rp1bp/1p4p1/n4p2/q2rB3/5Q2/P4PPP/2R1R1K1 w - - 0 1"]
[PlyCount "3"]

{Diagram [#]} 1. Rc8+ Rd8 2. Bd5+ 1-0

[Event "US Open"]
[Site "Atlantic City, NJ"]
[Date "1972.08.25"]
[Round "12"]
[White "Jacobs, Jon"]
[Black "Thornley, John"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "2208"]
[BlackElo "1980"]
[Annotator "Jacobs, Jon (w/Stockfish 7, Komodo 9.3)"]
[PlyCount "144"]
[EventDate "1972.08.25"]
[EventRounds "12"]
[EventCountry "USA"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 (5. f3) 5... O-O 6. g4 $6 {
This "caveman" method of countering the King's Indian ultimately proves
anti-positional. Unlike positions arising from the Sicilian or Pirc defenses,
here the pawn upon reaching g5 actually impedes White's pieces from getting
closer to the enemy king. The Saemisch Attack (5.f3) is a sounder and more
flexible way for White to prepare a kingside pawnstorm. 6...} e5 7. d5 c6 8. g5
({More logical seems 8.h4. Amura-Mendez Ataria, Buenos Aires 1992, went} 8. h4
Ne8 9. h5 Nd7 10. Be3 cxd5 11. cxd5 a6 12. Qd2 (12. Qb1) 12... b5 13. Nh3 Qe7
14. O-O-O Bb7 15. Kb1 Rc8 16. Rh2 {with advantage to White, who won on move 38.
(16...} f6 17. hxg6 hxg6 18. f3 Nc5 19. Rdh1 b4 20. Nd1 b3 21. a3 Qd7 22. Nc3
Na4 23. Nxa4 Qxa4 24. Bd3 Rc7 25. Ng1 g5 26. Ne2 Kf7 27. Ng3 Bc8 28. Rh7 Rg8
29. Bb6 Rb7 30. Qc3 Bd7 31. Ba5 Rb8 32. Nf5 Rc8 33. Qb4 Qxb4 34. Bxb4 Bxf5 35.
gxf5 Ra8 36. Ba5 Ke7 37. Rc1 Kd7 38. Rc6 {1-0 Amura,C-Mendez Ataria,E/Buenos
Aires 1992/EXT 2003)}) ({Siebrecht-Kersten, Waldbronn 1992, saw} 8. h4 cxd5 9.
cxd5 Na6 10. Be3 Nc5 11. f3 a5 12. h5 Bd7 13. Qd2 a4 14. Bh6 $6 Bxh6 15. Qxh6 {
, when Black could have seized the initiative with 15...} a3 $1 {, and if 16.
b3 Qa5 17.Qd2 Rac8.} (15... Qe7 16. Nh3 a3 17. b3 Rfc8 18. Nd1 Nfxe4 19. fxe4
Nxe4 20. hxg6 fxg6 21. Ne3 Rc3 22. O-O Rac8 23. Rad1 b5 24. Rf3 Rc1 25. Bd3 Nd2
26. Rf2 Rxd1+ 27. Nxd1 e4 28. Qxd2 exd3 29. Qxd3 Bxg4 30. Nf4 Rc1 31. Ne2 Rc8
32. Ne3 Bxe2 33. Rxe2 Rc1+ 34. Nf1 Qg5+ 35. Rg2 Qf6 36. Qe2 Qd4+ 37. Rf2 Qxd5
38. Qe8+ {1-0 Siebrecht,S-Kersten,U/Waldbronn 1992/EXT 2002}) 16. b3 Qa5 17.
Qd2 Rac8) 8... Ne8 9. Be3 cxd5 10. cxd5 Na6 11. Qd2 Bd7 12. O-O-O $2 {A
textbook case of "castling into it." Compared with the first game in the
previous note, here the White h-pawn and KN still sit on their original
squares, the g5-pawn blocks White's access to h6, while Black's pieces,
especially his queen, can more quickly assault the white king position. 12...}
Qa5 13. Kb1 Nc5 14. Bd3 $2 {Instead of this timid and needless prophylactic,
it was time to ramp up kingside operations with h4.14...} Nc7 15. h4 b5 16. h5
b4 17. Nce2 Rfb8 18. Bc2 Nb5 19. Ka1 Rb6 ({Storm clouds have been gathering
around White's king for several moves. Here} 19... Nd4 $1 {would have led to a
decisive advantage, for example:} 20. Bxd4 (20. Nxd4 exd4 21. Bxd4 Bxd4 22.
Qxd4 b3 23. Bb1 Rb4 24. Qc3 Na4 25. Qf6 bxa2 26. Bc2 Rxb2 27. Bxa4 Rb1+ 28.
Rxb1 axb1=Q+ 29. Kxb1 Rb8+) 20... exd4 21. Nxd4 Bxd4 22. Qxd4 b3 23. Bb1 Rb4 $1
24. Qc3 Na4 $1 25. Qf6 bxa2 26. Bc2 Rxb2 27. Bxa4 Rb1+ 28. Rxb1 axb1=Q+ 29.
Kxb1 Rb8+ {and the white king won't survive long. In the game, Black breaks
through on his next move.}) 20. Nc1 Nc3 $1 {Diagram #} 21. Bxc5 dxc5 22. bxc3 (
{Declining the sacrifice is slightly better, but Black would still have a
winning attack. One engine-generated line runs} 22. Rf1 c4 23. Nge2 Nxe2 24.
Nxe2 Rc8 25. hxg6 hxg6 26. b3 Bb5 27. Bd1 Qa3 28. Qc2 Qa6 $1 29. Re1 cxb3 30.
Qxb3 Bc4 31. Qb2 Bxd5 32. exd5 e4) 22... bxc3 23. Qe3 Qa3 24. Nd3 Rb2 $2 ({
From here on Black begins to go astray. Although the text move is still
winning,} 24... Ra6 {was much str onger. It would have netted him a full rook
and an ongoing attack that would gain still more material, i.e.,} 25. Bb1 c2
26. Nb2 Qxb2+ $1 27. Kxb2 cxd1=Q) 25. Bb3 Rxb3 26. Qxc5 c2 $2 {Needlessly
sacrificing the single biggest source of his advantage. Much better was ...Qa4
or ...Qa6.} (26... Qa4) (26... Qa6) 27. Qxc2 Ba4 $2 {After this further
inaccuracy Black is no longer clearly winning. Better is ... Rc3 or ...Rab8.} (
27... Rc3) (27... Rab8) 28. Ne2 Rb4 $2 {And now Black's remaining advantage
will vanish if White replies correctly.} ({Necessary was} 28... Rab8 {,
threatening ...Rb2. After} 29. hxg6 ({if} 29. Rd2 {, the subtle ...} gxh5 $1 {
keeps Black on top according to Stockfish}) 29... hxg6 30. Rd2 Rb2 31. Qxb2
Rxb2 32. Nxb2 Qb4 33. Nxa4 Qxd2 34. Nac3 Qxg5 {, Black is firmly in the
driver's seat.}) 29. Qc1 {(?)} ({White would be fine after} 29. Qc3 $1 Qxc3+
30. Nxc3 Bxd1 31. Nxb4 Bf3 32. Rh3 Bg4 33. Rh2 gxh5 34. Nc6 {. The text move
lets Black maintain a moderate advantage based on superior piece activity.})
29... Qxc1+ 30. Rxc1 Rxe4 31. Nc3 Rd4 32. h6 Bh8 33. Nc5 e4 34. N5xa4 $2 ({
After the stronger} 34. Rhe1 f5 35. gxf6 Bxf6 36. N5xe4 Bh8 {, Black's
positional advantages (powerful dark-square bishop, active rooks and the
cornered condition of the white king) would outweigh his pawn minus, but a win
is difficult to prove. The text move leads to similar positions, but with two
critical differences: 1) the black e-pawn remains on the board so White has no
extra material to offset his positional deficits; and 2) the black f7-pawn and
white g5-pawn haven't been traded off - and the latter proves to be a chronic
weakness for White. In fact, engines see Black once again having a decisive
advantage. The pin on the c3-knight will be a constant source of worry for
White, along with the defense of his d, f and g-pawns.}) 34... Rxa4 35. Kb2 {
Here 35.Rhe1? would lack point since there would be no threat to capture the
black e-pawn as in the previous note. 35...} (35. Rhe1) 35... Rb8+ 36. Kc2 Rc4
37. Rh3 {Diagram #} Rcb4 $2 {This marks a rare instance where a rook's power
is diminished rather than enhanced by threatening to invade the 7th rank. The
black rooks are optimally posted on the c-file where they reinforce the pin.} (
{After} 37... Rbc8 {(37...Be5 and 37...Bd4 are also winning)} 38. Kb3 Be5 39.
a4 ({or} 39. a3 a5 40. Rc2 a4+ 41. Kb2) 39... a5 {places White in zugzwang: he
can do little beyond shuffle his rook between c1 and c2, while Black can
choose between picking up the g-pawn (via ...Bf4) or f-pawn (via ...Bd4) or
playing ...Bd4 followed by ...e4-e3, forcing White to give up the Exchange to
avoid losing his knight.}) (37... Be5) (37... Bd4) 38. Kd1 Kf8 39. Re3 {
Engines evaluate this position as almost dead-equal, but that's hard to
believe. Although the White pieces aren't as confined as in the previous note,
Black nevertheless enjoys most of the same positional pluses: his bishop
should dominate White's knight, his rooks have greater scope, and his pawn
structure is far more solid than his opponent's. Still, White might come out
okay if he manages to trade off the enemy bishop under just the right
circumstances - such as moving his knight to f6 when a white rook can
recapture there, or even exchanging one of his rooks for the bishop in order
to then plant his knight on f6 while preserving his d-pawn (see the next note).
39...} Be5 40. Ne2 $2 ({Instead,} 40. Nxe4 $1 {would have held the balance,
since after 40...} Bf4 $2 41. Nf6 Bxe3 42. fxe3 {White would have more than
enough compensation for the Exchange in the form of a dominating knight and
passed d-pawn that has mutated from a weakness into a strength.}) 40... Rd8 41.
Rc5 Bd4 $2 ({The correct way to exploit White's weak pawns was the seemingly
paradoxical} 41... Bd6 $1 {(the only winning move, according to Stockfish and
Komodo). For example,} 42. Ra5 ({or} 42. Rc6 Be7 43. Nc3 Bxg5 44. Rxe4 Rxe4 45.
Nxe4 Rxd5+ 46. Ke2 Bxh6 {with an easy win}) 42... Rc4 43. Ng3 Bc7 44. Rb5 (44.
Rxa7 $2 Bb6 {forks the rooks}) 44... a6 45. Rb7 Rxd5+ 46. Ke1 Rc1+ 47. Ke2 Rc2+
48. Kf1 Bxg3 $1 49. Rxg3 ({or} 49. fxg3 Rd1+ 50. Re1 Rxe1+ 51. Kxe1 Rxa2) 49...
Rf5 50. Ke1 Rfxf2) 42. Nxd4 Rxd4+ 43. Kc2 $2 {Keeping the king near the
kingside pawns offered better drawing chances. White ends up backtracking that
way anyway, losing a couple of tempi. 43...} R4xd5 44. Rxd5 Rxd5 45. Rxe4 Rxg5
{In this roo k and pawn ending Black's winning chances are good. Already a
pawn ahead, he can also expect to win the exposed white h-pawn sooner or later.
} 46. Ra4 a5 47. Kd3 Ke7 48. Ke3 Kd6 49. Rc4 Rb5 $2 {Pointless. The
straightforward 49...Rh5 was best.} (49... Rh5) 50. Rc8 Rh5 51. Ra8 Kc6 {
Diagram #} 52. Ra6+ $2 ({This helps the black king support his a-pawn that
eventually becomes a passer. Instead,} 52. a4 {, holding back the king,
offered chances to hold the game. For example: 52.a4} Kb6 ({if} 52... Rxh6 53.
Rxa5 Kb6 54. Rb5+ Ka6 55. Rd5 f5 56. f3 Rh4 57. Rd7 Ka5 58. Ra7+ Kb4 59. Kf2 {
, Black will ultimately have to part with one of his pawns to eliminate the
white a-pawn, resulting in a dead-drawn R+2P vs. R+P position}) 53. Rb8+ Kc5
54. Rb7 Kc4 55. Rxf7 Rxh6 56. Rb7 {From here it's hard to see how Black can
make progress, since using his rook to capture the white a-pawn would cost him
both kingside pawns.}) 52... Kb5 53. Rf6 Kb4 $1 54. Rxf7 Rxh6 {Compare this
with the position at the end of the preceding note, where the black king was
cut off on the c-file, unable to approach the white a-pawn. The maneuver that
will conclude the game is coming into focus: Black will win the a2-pawn and
then his king will shepherd his own a-pawn through. White's hopes of surviving
that scenario rest on winning both black kingside pawns and then advancing his
f-pawn supported by his king while the black king remains near the opposite
corner of the board, so that black will have to trade his rook for the pawn.}
55. Rd7 Ka3 56. Rd5 ({The immediate} 56. Rd2 {offers no salvation. Play might
continue: 56...} Rh2 $1 ({gaining time by restraining the f-pawn; instead, the
seemingly natural} 56... a4 57. f4 {allows the white king to remain on the e-
or d-file where it can help defend against the black a-pawn's advance.}) 57.
Kf4 a4 58. Kg3 Rh1 59. f4 Rb1 60. Rh2 Rb2 61. Rxh7 Kxa2 62. Ra7 a3 63. Ra6 Rb3+
64. Kg4 Kb2 65. Kg5 Rg3+ 66. Kh4 ({if} 66. Kh6 {or Kf6,} a2 67. Rb6+ Rb3 68.
Ra6 Ra3) (66. Kf6) 66... Rg1 67. Rb6+ Ka1 68. Rb8 a2 69. Rb6 Rb1 70. Rxg6 Rh1+
71. Kg5 Rg1+ {and wins.}) 56... a4 57. Rd2 Rh1 58. Kf4 ({On} 58. f4 Rb1 59. Rh2
h5 $1 60. Rg2 h4 61. Rxg6 ({or} 61. Rh2 Rb4 62. Rxh4 g5) 61... Kxa2 62. Rh6 a3
63. Rxh4 Rb4 {with a winning position.}) 58... h5 {Simpler is 58...Rb1
followed by ...Rb2, since White lacks time for 59.Kg5 followed by gobbling the
pawns: in the eventual Q vs BP ending he will be too late to reach the
well-known drawing position with his pawn on f7 and his king controlling f8.} (
58... Rb1) 59. f3 Rg1 60. Rh2 h4 {Again, 60...Rb1 was more direct.} (60... Rb1)
61. Ke4 h3 {(?)} ({While this should be good for a full point, a clearer path
was} 61... g5 62. f4 {(else Black obtains not one but two advanced passers
after ...Ra1 followed by advancing his h-pawn if the white rook steps off the
h-file to grab the g-pawn)} Rg4 {{{Note to editor: Although engines value ...
g4 more highly than ...Rg4, the latter move brings a faster and simpler
conclusion so is more suitable to quote here. -- JJ} (62... Ra1) 63. Kf5 Rxf4+
64. Kxg5 Rf1 {Cutting off white's king many files away from the a-pawn assures
victory.}) 62. f4 Rg2 $2 {But this inaccuracy lets the win slip away.} ({
Correct was} 62... Rg3 63. Kd4 Kb4 64. Rb2+ Ka5 65. Rb7 ({if} 65. Rh2 a3 66.
Kc5 Ka4 67. Kc4 Rg2 {-- only now does this idea preserve the win --} 68. Rxh3
Rxa2 69. Rg3 Rc2+ 70. Kd5 Rb2 71. Rxg6 Rb5+ {and the pawn will queen}) 65... h2
66. Rh7 Rg2 {. With the white rook now permanently tied to the h-file, Black
should be able to reactivate his king and capture one of White's remaining
pawns under favorable circumstances, resulting in an elementary won position.
For example,} 67. a3 Re2 68. Kc5 Rc2+ 69. Kd4 Kb5 70. Rb7+ Kc6 71. Rh7 Ra2 72.
Rh6 Kd7 73. Ke5 Rg2 74. Kd5 Ke7 75. Ke5 Re2+ 76. Kd4 Kf6 {. An exchange of
Black's advanced h-pawn for either the a-pawn or f-pawn is now inevitable,
which will leave Black with a simple win.}) 63. Rxh3+ Kxa2 {Diagram #} 64. Kd3
$2 ({White could have saved himself with} 64. Kd4 $1 Kb2 65. Kc4 $1 {Then 65...
} Rf2 (65... Kc2 66. Rf3 Rg4 67. Rf2+ {is also unavailing}) ({while} 65... a3
66. Rb3+ Ka2 67. Rf3 {is an immediate draw}) 66. Rg3 Rxf4+ 67. Kb5 a3 ({or} 
67... Rf6 68. Kxa4) 68. Rg2+ {lead nowhere for Black. The text move gives
Black the option of 64...Kb3! (see next note)}) 64... Kb2 $2 {Now 65.Kc4!
would transpose to the preceding note, saving White a half-point.} ({Instead,} 
64... Kb3 $1 {should win for Black:} 65. Kd4+ ({or} 65. Rh8 Rg3+ 66. Kd2 (66.
Kd4 {succumbs faster}) 66... Kb2 67. Rb8+ Rb3 68. Rc8 Rb6 69. Rc2+ Kb1 70. Rc1+
Ka2 71. Rc3 Rf6 72. Rc2+ (72. Rc4 Kb3 73. Rc3+ {amounts to the same thing})
72... Kb3 73. Rc3+ Kb4 74. Rf3 Rc6 75. Rf1 a3 76. Rb1+ Ka4 77. Ra1 Rc4 {
and Black will gain a second pawn}) 65... Kb4 66. Rh8 Rd2+ 67. Ke5 a3 68. Rb8+
Kc3 69. Rc8+ Kb2 70. Rb8+ Kc2 71. Ra8 Kb3 72. Rb8+ Kc4 73. Rc8+ Kb5 74. Rb8+
Kc6 75. Rg8 Rg2 76. Ra8 a2 77. Kd4 Kb5 78. Kc3 Rf2 79. Kb3 Kc5 80. Kc3 ({
Black also wins after} 80. Ra4 Rxf4 $1 81. Rxa2 Rf3+ $1 82. Ka4 g5 83. Rg2 Rf5)
80... Rf3+ $1 ({not} 80... Rxf4 $4 81. Ra5+ Kd6 82. Rxa2 $11) 81. Kb2 Rxf4 {
with a won position}) 65. Rh8 $4 {After this it's lights-out for White.} (65.
Kc4) 65... Rg3+ 66. Kc4 ({Here} 66. Kd2 {would fail to 66...} a3 67. Rb8+ Rb3
68. Rc8 a2 {and the pawn will queen.}) 66... Rc3+ 67. Kd4 a3 68. Rh2+ Rc2 69.
Rh8 a2 70. Rb8+ Kc1 71. Ra8 Kb1 72. Kd3 Rb2 0-1

[Event "5th CC World Ch Final"]
[Site "corr-5"]
[Date "1965.??.??"]
[Round "?"]
[White "Yakov Estrin"]
[Black "Hans Berliner"]
[Result "0-1"]
[ECO "C57"]
[Annotator "Dunne, Alex"]
[PlyCount "84"]
[EventDate "1965.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 b5 6. Bf1 (6. Bxb5 Qxd5 7.
Bxc6+ Qxc6 8. O-O Bc5) 6... Nd4 7. c3 Nxd5 8. Ne4 Qh4 9. Ng3 Bg4 10. f3 e4 {
Diagram [#]} 11. cxd4 Bd6 12. Bxb5+ Kd8 13. O-O exf3 14. Rxf3 Rb8 15. Be2 (15.
a4) 15... Bxf3 16. Bxf3 Qxd4+ 17. Kh1 {Diagram [#]} Bxg3 18. hxg3 Rb6 19. d3
Ne3 20. Bxe3 Qxe3 21. Bg4 h5 22. Bh3 g5 23. Nd2 g4 24. Nc4 Qxg3 25. Nxb6 gxh3
26. Qf3 hxg2+ 27. Qxg2 Qxg2+ 28. Kxg2 cxb6 29. Rf1 Ke7 30. Re1+ Kd6 31. Rf1 Rc8
{Diagram [#]} 32. Rxf7 Rc7 33. Rf2 Ke5 34. a4 Kd4 35. a5 Kxd3 36. Rf3+ Kc2 37.
b4 b5 38. a6 Rc4 39. Rf7 Rxb4 40. Rb7 Rg4+ 41. Kf3 b4 42. Rxa7 b3 0-1

[Event "Golden Knights playoff"]
[Site "?"]
[Date "1959.??.??"]
[Round "?"]
[White "Robert Steinmeyer"]
[Black "Hans Berliner"]
[Result "0-1"]
[ECO "E81"]
[Annotator "Dunne, Alex"]
[PlyCount "84"]
[EventDate "1959.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. Qd2 b5 8. Bd3 Nbd7
9. Nge2 O-O 10. O-O e5 11. a3 exd4 12. Nxd4 Bb7 13. a4 (13. b3) 13... b4 14.
Nce2 a5 15. Rac1 Nc5 16. b3 Re8 17. Nf4 Rc8 18. Rfd1 Qe7 19. Re1 Qf8 20. Bf1 d5
21. exd5 cxd5 22. Qf2 Nce4 23. Qc2 (23. fxe4 Ng4) 23... Nc3 24. Bf2 Bh6 25. g3
dxc4 26. bxc4 Nd7 27. Bh3 f5 28. Nb5 Nxb5 29. axb5 Nc5 {Diagram [#]} 30. Rxe8
Rxe8 31. Bg2 a4 32. Rd1 a3 33. Qd2 b3 34. Qb4 a2 35. Bxc5 Qxc5+ 36. Qxc5 b2 {
Diagram [#]} 37. Qf2 b1=Q 38. Qf1 Qxd1 39. Qxd1 Ra8 40. c5 a1=Q 41. Qxa1 Rxa1+
42. Kf2 Bxf4 0-1

[Event "5th World Championship"]
[Site "?"]
[Date "2017.04.09"]
[Round "?"]
[White "Heinz de Carbonnel"]
[Black "Hans Berliner"]
[Result "0-1"]
[ECO "E80"]
[Annotator "Dunne, Alex"]
[PlyCount "92"]
[EventDate "2017.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. Qd2 b5 8. O-O-O
Qa5 9. Kb1 Nbd7 10. g4 Rb8 11. h4 h5 12. g5 Nh7 13. Rh2 Nhf8 14. Rc1 Nb6 15.
cxb5 axb5 16. Nd1 Qa8 17. f4 Nc4 18. Bxc4 bxc4 19. Rf2 (19. Rxc4 Be6) 19... c5
20. Nc3 (20. d5 Nd7 21. Rxc4 Nb6 22. Rc1 Ba6) 20... Ne6 21. dxc5 Bb7 22. cxd6
Bxe4+ 23. Ka1 O-O 24. dxe7 Rfe8 25. Qd1 Rxe7 26. Nf3 Rd8 27. Nd2 {Diagram [#]}
Nd4 28. Bxd4 Bxd4 29. Ndxe4 {Diagram [#]} Bxf2 30. Qc2 Be3 31. Rf1 Rd3 32. Nf6+
Kg7 33. f5 Re5 34. fxg6 fxg6 35. Qh2 Qb8 36. Rb1 Rb5 37. Qh1 Bd4 38. Nxb5 Qxb5
39. Qh2 Qb7 40. Ne8+ Kh8 41. Nd6 Qd5 42. Qf4 Rf3 43. Qe4 c3 44. Qe8+ Kh7 45.
Qe7+ Bg7 46. bxc3 Qxd6 0-1

[Event "Kemeri"]
[Site "Kemeri LAT"]
[Date "1937.06.22"]
[Round "6"]
[White "Paul Keres"]
[Black "Eero Einar Book"]
[Result "1-0"]
[ECO "E07"]
[Annotator "Pandolfini, Bruce"]
[PlyCount "53"]
[EventDate "1937.06.16"]

1. Nf3 d5 2. c4 e6 3. Nc3 Nf6 4. d4 Be7 5. g3 O-O 6. Bg2 c6 7. O-O Nbd7 8. b3
b6 {Diagram [#]} 9. Bb2 a5 10. Nd2 Ba6 11. e4 dxc4 12. e5 Nd5 13. bxc4 Nxc3 14.
Bxc3 Rc8 15. Re1 b5 16. c5 f6 17. exf6 Bxf6 18. Ne4 b4 19. Bb2 e5 20. Nd6 exd4
21. Nxc8 Nxc5 22. Qh5 Na4 23. Be4 g6 24. Bxg6 hxg6 25. Qxg6+ Kh8 26. Ne7 Bxe7
27. Rxe7 1-0

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM I"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "6k1/8/8/4b3/7q/5Q2/6P1/5RK1 b - - 0 1"]
[PlyCount "5"]

{Diagram [#]} 1... Bh2+ 2. Kh1 Bg3+ 3. Kg1 Qh2# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM II"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/6k1/8/8/8/6q1/6B1/1Qn2RK1 b - - 0 1"]
[PlyCount "5"]

{Diagram [#]} 1... Ne2+ 2. Kh1 Qh4+ 3. Bh3 Qxh3# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM III"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "4r1k1/8/8/4b3/8/5Pq1/6P1/3Q1RK1 b - - 0 1"]
[PlyCount "3"]

{Diagram [#]} 1... Qh2+ 2. Kf2 Bg3# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM IV"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/6k1/8/8/8/6q1/2Q3Bn/6K1 b - - 0 1"]
[PlyCount "3"]

{Diagram [#]} 1... Nf3+ 2. Kh1 (2. Kf1 Qe1#) 2... Qh2# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM V"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "7k/1b4p1/8/6Q1/7P/4N1q1/6B1/2n2RK1 b - - 0 1"]
[PlyCount "3"]

{Diagram [#]} 1... Ne2+ 2. Kh1 Qh3# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM VI"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "7k/b7/8/8/7n/4q3/2Q2R2/3N1R1K b - - 0 1"]
[PlyCount "3"]

{Diagram [#]} 1... Qh3+ 2. Rh2 (2. Kg1 Nf3#) 2... Qxf1# 0-1

[Event "Mar del Plata"]
[Site "Mar del Plata"]
[Date "1961.??.??"]
[Round "10"]
[White "Dominguez, Christobal"]
[Black "Letelier Martner, Rene"]
[Result "1/2-1/2"]
[ECO "B28"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "114"]
[EventDate "1961.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ARG"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 a6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Qc7 6. Nd5 Qd8 7. Be3 Rb8 8.
Nb5 Qa5+ 9. c3 axb5 10. Bb6 Qxb6 11. Nxb6 Nf6 12. f3 e6 13. Bxb5 Bc5 14. Nxc8
Rxc8 15. Qe2 O-O 16. Bxc6 Rxc6 17. Qb5 Rb8 18. a4 Ne8 19. Ke2 Nc7 20. Qd3 Rd8
21. b4 Be7 22. b5 Rc5 23. c4 d5 24. cxd5 exd5 25. Rhc1 Ne6 26. g3 Bf6 27. Rxc5
Nxc5 28. Qc2 b6 29. Ra2 d4 30. Kd1 d3 31. Qb1 Bc3 32. a5 bxa5 33. b6 Bb4 34.
Rxa5 Bxa5 35. Qb5 Bxb6 36. Qxb6 Rc8 37. Kd2 h6 38. Qa7 Kf8 39. e5 Ke8 40. f4 g6
41. g4 Nd7 42. Kxd3 g5 43. fxg5 hxg5 44. Kd4 Nf8 45. Qa4+ Ke7 46. Ke4 Ne6 {
Diagram [#]} 47. Kf5 Rc5 48. Qa7+ (48. Qa3 {Diagram [#]} f6 (48... Ke8 49. Kf6
Rc7 50. Qa8+ Kd7 (50... Nd8 51. Kxg5) 51. Kxf7) 49. Qa7+ Rc7 50. Qb6 Ng7+ 51.
Kg6) 48... Rc7 49. Qa3+ Rc5 50. Qa7+ Rc7 51. Qa3+ Rc5 52. h4 (52. Qb4) 52...
gxh4 53. g5 h3 54. Qxh3 Rc4 55. Qa3+ Ke8 56. Qa8+ Ke7 57. Qa3+ Ke8 1/2-1/2

[Event "US Championship Qualifier"]
[Site "Tulsa, OK"]
[Date "2008.04.29"]
[Round "4"]
[White "Naroditsky, Daniel"]
[Black "Rowley, Robert"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2307"]
[BlackElo "2212"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "101"]
[EventDate "2008.??.??"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Nc6 4. d4 Bf5 5. O-O e6 6. b3 Be7 7. Bb2 Ne4 8. c4
h5 9. Nc3 h4 10. Nd2 hxg3 11. Ndxe4 gxh2+ 12. Kh1 dxe4 13. d5 exd5 14. cxd5 Ne5
15. Nxe4 Bxe4 16. Bxe4 Bd6 17. Qd4 Qe7 18. f4 Nd7 19. Bg2 Bc5 20. Qd3 O-O-O 21.
e4 f6 22. Rae1 Bb6 23. e5 Qc5 24. Bh3 Rxh3 25. Qxh3 Qxd5+ 26. Qf3 Qxf3+ 27.
Rxf3 fxe5 28. fxe5 Nc5 29. Re2 Ne6 30. Kxh2 Bd4 31. Rf7 Bxb2 32. Rxb2 Rd7 33.
Rxd7 Kxd7 34. Kg3 a5 35. Kf3 b6 36. Ke4 Ke7 37. Rc2 {Black lost on time here.}
Kd7 {Diagram [#]} 38. Rc3 (38. a3 Nc5+ 39. Kd5 c6+ 40. Kc4 Ke6) 38... Ke7 (
38... Nc5+ 39. Kf5 g6+ 40. Kf6 Ne4+ 41. Kf7 Nxc3 42. e6+) 39. a3 Kd7 40. b4
axb4 41. axb4 Ke7 42. Rd3 Nd8 43. Kd5 Kd7 {Diagram [#]} 44. b5 Ne6 45. Rf3 Ke7
46. Rf2 g5 (46... Nd8 47. e6 Ke8 48. Rc2) 47. Rh2 Nf4+ 48. Ke4 Ne6 49. Rh7+ Ke8
50. Kf5 Nd4+ 51. Kf6 1-0

[Event "USA-ch"]
[Site "New York"]
[Date "1960.12.19"]
[Round "2"]
[White "Lombardy, William James"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "B55"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "86"]
[EventDate "1960.12.18"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "USA"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 Nc6 6. c4 e6 7. Nc3 Be7 8. Be3
O-O 9. Nc2 d5 10. cxd5 exd5 11. Nxd5 Nxd5 12. Qxd5 Qc7 13. Qb5 Bd7 14. Rc1 Nb4
15. Nxb4 Qxc1+ 16. Bxc1 Bxb5 17. Nd5 Bh4+ 18. g3 Bxf1 19. Rxf1 Bd8 20. Bd2 Rc8
21. Bc3 f5 22. e5 Rc5 23. Nb4 Ba5 24. a3 Bxb4 25. axb4 Rd5 26. Ke2 Kf7 27. h4
Ke6 28. Ke3 Rc8 29. Rg1 Rc4 30. Re1 {Diagram [#]} Rxc3+ 31. bxc3 Rxe5+ 32. Kd2
Rxe1 33. Kxe1 Kd5 34. Kd2 Kc4 35. h5 b6 36. Kc2 g5 37. h6 f4 38. g4 a5 39. bxa5
bxa5 40. Kb2 a4 41. Ka3 Kxc3 42. Kxa4 Kd4 43. Kb4 Ke3 0-1

[Event "Prague"]
[Site "Prague"]
[Date "1951.??.??"]
[Round "?"]
[White "Hasek, Josef"]
[Black "Study"]
[Result "1/2-1/2"]
[Annotator "Naroditsky, Daniel"]
[SetUp "1"]
[FEN "8/1p6/1Pp2N1q/p1Ppk2p/P3p3/3PPpPp/3K1P1P/1R6 w - - 0 1"]
[PlyCount "13"]
[EventDate "1960.12.18"]
[EventType "tourn"]
[EventRounds "11"]

{Diagram [#]} 1. Ng4+ hxg4 2. d4+ Kf6 3. Rh1 Qf8 4. Ke1 Qa8 5. Kf1 Qa6+ 6. Kg1
Qa8 7. Kf1 1/2-1/2

