[Event "60th US Open"]
[Site "Omaha, NE USA"]
[Date "1959.07.24"]
[Round "5"]
[White "Walter Harris"]
[Black "Anthony Cantone"]
[Result "1-0"]
[ECO "C98"]
[Annotator "Soltis, Andy"]
[PlyCount "53"]
[EventDate "1959.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Nc6 13. dxc5 dxc5 14. Nf1 Rd8 15.
Qe2 Be6 16. Ne3 h6 17. Nh2 Rac8 18. Nf5 Bxf5 19. exf5 c4 20. Ng4 Re8 (20...
Nxg4 21. Qxg4 Kh8 22. f6 Bxf6 23. Qf5 Kg8 24. Bxh6) 21. Qf3 (21. Nxe5 Nxe5 22.
Qxe5 Bd6 (22... Bc5)) 21... Rcd8 22. Qg3 Kh8 23. Nxh6 gxh6 24. Bxh6 Rg8 25. Qh4
Nh7 {[#]} (25... Rd3 26. Bxd3 cxd3 27. Bg5+ Nh7 28. Bxe7) 26. f6 Bxf6 27. Bg5
1-0

[Event "52nd US Open"]
[Site "Fort Worth, TX USA"]
[Date "1951.07.20"]
[Round "11"]
[White "Albert Sandrin"]
[Black "James T Sherwin"]
[Result "1-0"]
[ECO "D45"]
[Annotator "Soltis, Andy"]
[PlyCount "45"]
[EventDate "1951.07.09"]

1. c4 Nf6 2. d4 c6 3. Nc3 d5 4. Nf3 e6 5. e3 Nbd7 6. Qc2 dxc4 7. Bxc4 Bd6 8.
O-O O-O 9. Rd1 Qe7 10. a3 e5 11. e4 exd4 12. Nxd4 Nc5 (12... Nb6 13. Ba2 Bg4
14. f3 Qe5 15. g3 Bc5) 13. f3 Qc7 14. g3 Ncd7 15. Kg2 Nb6 (15... Ne5 16. Be2)
16. Ba2 a6 17. Bg5 Nh5 18. f4 h6 19. Bh4 (19. Qe2 hxg5 20. Qxh5 gxf4 21. Nf3)
19... Be7 20. Bxe7 Qxe7 21. e5 {[#]} g5 22. Qg6+ Ng7 23. Ne4 1-0

[Event "50th US Open"]
[Site "Omaha, NE USA"]
[Date "1949.07.20"]
[Round "9"]
[White "Albert Sandrin"]
[Black "George Mortimer Kramer"]
[Result "1-0"]
[ECO "E44"]
[Annotator "Soltis, Andy"]
[PlyCount "73"]
[EventDate "1949.??.??"]

1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 b6 5. Nge2 Bb7 6. a3 Be7 7. Nf4 d6 8. Bd3
Nbd7 9. O-O O-O 10. b3 e5 11. Nfe2 d5 12. cxd5 Nxd5 13. Nxd5 Bxd5 14. Qc2 g6
15. Rd1 exd4 16. Nxd4 Bd6 17. Bb2 Qg5 18. f4 Qg4 19. e4 Bb7 20. Ne2 f6 21. b4
Rae8 22. Rf1 Re7 23. Qc4+ Kg7 24. Rf3 b5 25. Qc2 c5 26. Rg3 Qe6 27. e5 fxe5 28.
f5 Qd5 29. Nf4 Qc6 30. Ne6+ Kg8 31. Nxf8 Nxf8 32. fxg6 h6 33. Rf1 c4 34. Qf2
Rg7 {[#]} 35. Qf7+ Rxf7 36. gxf7+ Kh8 37. Rg8# 1-0

[Event "47th US Open"]
[Site "Pittsburgh, PA USA"]
[Date "1946.07.08"]
[Round "1"]
[White "Larry Melvyn Evans"]
[Black "Albert Sandrin"]
[Result "1-0"]
[ECO "C56"]
[Annotator "Soltis, Andy"]
[PlyCount "67"]
[EventDate "1946.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8.
Nc3 Qa5 9. Nxe4 Be6 10. Neg5 O-O-O 11. Nxe6 fxe6 12. Ng5 d3 13. c3 Qd5 14. Bd2
e5 15. Qb3 Qd7 16. a4 Qf5 17. Nf7 Bc5 18. Rf1 e4 19. Nxh8 Ne5 20. Nf7 Nxf7 21.
Qd1 Ne5 22. b4 Nf3+ 23. Kh1 Bd6 24. h3 g5 25. Qc1 g4 26. Be3 gxh3 27. g3 h5 28.
Bf4 {[#]} d2 (28... Bxf4 29. Qxf4 Qxf4 30. gxf4 Rg8 31. Rg1 Rxg1+) 29. Bxd2 (
29. Qd1 Bxf4) 29... Bxg3 (29... Nxd2) 30. fxg3 Rxd2 31. Qxd2 Qf6 32. Rad1 Qe7
33. Qe3 Ne5 34. Qxe4 1-0

[Event "56th US Open"]
[Site "Long Beach, CA USA"]
[Date "1955.08.14"]
[Round "7"]
[White "Albert Sandrin"]
[Black "James R Schroeder"]
[Result "1-0"]
[ECO "D61"]
[Annotator "Soltis, Andy"]
[PlyCount "119"]
[EventDate "1955.??.??"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Be7 5. Nc3 Nbd7 6. e3 O-O 7. Qc2 c5 8. Rd1
Qa5 9. cxd5 exd5 10. Bd3 h6 11. Bh4 Re8 12. O-O cxd4 13. exd4 Nf8 14. Ne5 Be6
15. f4 Qb6 16. Kh1 Rac8 17. Qe2 a6 18. Bb1 Qd6 19. Qf3 b5 20. a3 b4 21. axb4
Qxb4 22. f5 Bd7 23. Bxf6 Bxf6 24. Nxd5 Qd6 25. Nxf6+ Qxf6 26. Ba2 Re7 27. Qf4
Bb5 28. Ng4 Qg5 29. f6 Qxf4 30. Rxf4 gxf6 31. Nxf6+ Kg7 32. g4 Rc2 33. Nh5+ Kg8
34. Ng3 Rxb2 35. Bd5 Ne6 36. Rf6 Nxd4 37. Rxh6 Be2 38. Rc1 Bxg4 39. Rg6+ Kh7
40. Rxg4 Ne2 41. Nxe2 Rexe2 42. Rg2 Rxg2 43. Bxg2 Kh6 44. Kg1 Rb6 45. Ra1 f6
46. Ra5 Rb1+ 47. Bf1 Rb6 48. Bxa6 Rb1+ 49. Bf1 Rb6 50. Be2 Rb1+ 51. Kf2 Rh1 52.
Kg2 Re1 53. Bd3 Re3 54. Rd5 Kg7 55. Rd7+ Kh6 56. Kf2 Re5 57. Kf3 Rh5 {[#]} 58.
Kf4 Rh4+ 59. Kg3 Rg4+ (59... Ra4 60. Rh7+ Kg5 61. h4+) 60. Kxg4 1-0

[Event "50th US Open"]
[Site "Omaha, NE USA"]
[Date "1949.07.21"]
[Round "10"]
[White "Albert Sandrin"]
[Black "Phil Le Cornu"]
[Result "1-0"]
[ECO "D74"]
[WhiteElo "2310"]
[BlackElo "2220"]
[Annotator "Soltis, Andy"]
[PlyCount "55"]
[EventDate "1949.??.??"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Be6 6. Nf3 Nxc3 7. bxc3 Bg7 8.
O-O O-O 9. d4 c6 10. e4 Bc4 11. Re1 Nd7 12. Be3 Qa5 13. Nd2 Ba6 14. Qb3 c5 15.
e5 cxd4 16. cxd4 Nb6 17. Rac1 Rac8 18. Rc5 Rxc5 19. dxc5 Nd7 20. e6 Nxc5 21.
exf7+ Kh8 22. Qd5 b6 23. Bd4 Nd3 24. Rxe7 Qxd2 25. Re8 h6 26. Rxf8+ Kh7 {[#]}
27. Rh8+ Bxh8 (27... Kxh8 28. f8=Q+) 28. f8=N# 1-0

[Event "USA-ch"]
[Site "South Fallsburg"]
[Date "1948.08.26"]
[Round "15"]
[White "Albert Sandrin"]
[Black "Anthony Suraci"]
[Result "1-0"]
[ECO "B23"]
[Annotator "Soltis, Andy"]
[PlyCount "55"]
[EventDate "1948.??.??"]

1. Nc3 c5 2. e4 d6 3. g3 Nc6 4. Bg2 a6 5. Nge2 e6 6. O-O b5 7. d4 cxd4 8. Nxd4
Bb7 9. a4 b4 10. Nce2 Qc7 11. Bd2 Nge7 12. Rc1 Rd8 13. Nxc6 Nxc6 14. c3 Qa5 15.
Qb3 Qh5 16. Nf4 Qg5 17. Rfd1 Qh6 18. cxb4 g5 19. Ne2 Ne5 20. Rc7 Ba8 21. b5 Ng4
22. h3 Nf6 23. bxa6 Bg7 24. Qb5+ Kf8 25. Bxg5 Qg6 {[#]} 26. Rxd6 Rxd6 (26...
Re8 27. Nf4) 27. Qb8+ Ne8 28. Be7+ 1-0

[Event "USA-ch"]
[Site "New York, NY USA"]
[Date "1946.11.16"]
[Round "19"]
[White "Albert Sandrin"]
[Black "Sol Isaac Rubinow"]
[Result "1-0"]
[ECO "B44"]
[Annotator "Soltis, Andy"]
[PlyCount "119"]
[EventDate "1946.??.??"]

1. c4 Nf6 2. Nc3 e6 3. e4 c5 4. Nf3 Nc6 5. d4 cxd4 6. Nxd4 Bb4 7. f3 d5 8. cxd5
exd5 9. Bb5 O-O 10. O-O Qb6 11. Be3 Bxc3 12. bxc3 Nxd4 13. Ba4 Nxf3+ 14. Rxf3
Qa6 15. exd5 Rd8 16. Bb3 Bg4 17. Bd4 Nxd5 18. Rxf7 Bxd1 19. Rxg7+ Kf8 20. Rxd1
Ne7 21. Rf7+ Ke8 22. Re1 Rd7 23. Rxh7 Kd8 24. Rh8+ Kc7 25. Rxa8 Nc6 26. Bf2 Re7
27. Bg3+ Kb6 28. Rb1 Ka5 29. c4 Nb4 30. a3 Nd3 31. Rd8 Qb6+ 32. Kh1 Qxd8 33.
Bc2 b6 34. Rb5+ Ka6 35. Rd5 Rd7 36. Bxd3 Kb7 37. Be4 Ka6 38. h3 Rxd5 39. cxd5
Qg5 40. Kh2 Qe7 41. Bd3+ Kb7 42. d6 Qe3 43. Bf5 Qd4 44. h4 b5 45. d7 a5 46. Kh3
b4 47. axb4 a4 48. b5 Ka7 49. Bg4 Qd3 50. Kh2 Kb7 51. b6 a3 {[#]} 52. Bc7 a2
53. Bf3+ Ka6 54. Be2 Qxe2 55. d8=Q Qe4 (55... a1=Q 56. Qa8+) 56. Qf6 Qe1 57.
Be5 Kb7 58. Qf3+ Kxb6 59. Qb3+ Kc6 60. Qc3+ 1-0

[Event "?"]
[Site "?"]
[Date "2019.12.20"]
[Round "?"]
[White "Shaffer, Patrick"]
[Black "Jensen, Ulf"]
[Result "*"]
[ECO "B77"]
[Annotator "Alburt, Lev"]
[PlyCount "90"]
[EventDate "2019.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 (6... Ng4 7.
Bb5+) 7. f3 O-O 8. Qd2 Nc6 9. O-O-O Qa5 (9... d5) 10. Nb3 Qd8 11. Nd4 a6 {
Ulf rejected the possible repetition.} 12. Bc4 Nxd4 13. Bxd4 Be6 14. Nd5 {
[#] I should have expected that, as Nd5 frequently begins White's attack in
most Sicilians. Here it looks like it will lead to mass liquidation. Okay,
I'll handle it! This is the first critical point referred to above. Who takes
what, NxN or Bxn? Looking 4 or 5 moves ahead shows no clear advantage to Black,
so} Bxd5 $1 15. Bxd5 {LA: White is slightly better after 15. exd5, which turs
the e7-pawn into a target.} (15. exd5) 15... Nxd5 16. Bxg7 Kxg7 17. Qxd5 {
And here we are at a queen and rook ending. The queenside is not yet safe for
my queen, so I develop my rook, to a strong square, for the price of a pawn.
It will also open the b-file.} (17. exd5) 17... Rc8 {LA: After 17. ... Qb6,
the game is even, but Black is determined to attack!} (17... Qb6) 18. Qxb7 Qa5
{As a5 is now safe! Of course, a3 follows. LA: In fact, 19. Kb1 is a bit
better.} 19. a3 (19. Qb3 Rb8) (19. Kb1) 19... Rb8 {Chasing the queen away and
aiming at the White king. LA: This move sets up a trap. (Otherwise, 19. ...
Rc7 is better.)} (19... Rc7) 20. Qxe7 {[#]} (20. Qd5) 20... Rfc8 {The sharp
line (shown by engines)} (20... Qb6 21. Rxd6 Qxb2+ {leads to equality, while
the game move, 20. ... Rfc8, loses.}) 21. Rxd6 {This is the second critical
move referred to above.} Rxc2+ {All other moves also lose, for example,} (21...
Qc5 22. Qf6+ Kg8 23. Rd2 {... and all is protected.}) 22. Kxc2 Qc5+ 23. Kb1 ({
After} 23. Kd1 {, the win for White is is the easiest, e.g.:} Rxb2 24. Rxg6+ $1
{What now? The checks are gone. There has got to be a way! I explored myriads
of lines 4-6 moves deep, all dead ends! It took me 20 minites to find it! A
quiet move.}) 23... Qc3 $1 {[#] Okay, 23. ... Qc3 is not check; and the queen
is safe, because the b-pawn is pinned. And mate in one is threatened, putting
pressure on White! And this is the key: The Black queen guards f6!. AL: White
is still winning, relatively easily, with a neat double attack:} 24. Qf6+ (24.
Rd2 Qxd2 25. Qe5+) 24... Qxf6 25. Rxf6 Kxf6 {In this rook and pawn endgame,
Black has a slight advantage. Black controls the black squares and his rook is
free to roam the queenside. White's two pawns are goners. LA: Ulf is
overoptimistic. After, say, 26. Rc1, a master should win versus even Alpha
Zero.} 26. b4 (26. Rc1) 26... a5 {Plays right into my hands. The b-pawn is
still pinned! LA:} 27. Kc2 {[#]} (27. Kb2 $1) 27... axb4 28. axb4 {Even now,
after many errors, White wins! 28. a4!. With queenside pawns gone, Black
should hold.} (28. a4) 28... Rxb4 29. Rd1 Ra4 30. Kd3 Ke5 {The rest is mop-up.
My rook dominates the far side. I prefer not to exchange rooks. LA: The pawn
ending is lost for Black. And Black is worse in the pawn ending, but can
probably draw.} 31. Ke3 h6 32. f4+ Kf6 33. Rd3 g5 34. f5 Ra5 35. g3 h5 36. Kf3
Ke5 37. h3 Ra1 38. Rd5+ Kf6 39. h4 g4+ {Closes the g- and h-files.} 40. Kf4 {
[#]} Ra3 $1 {Could be a mate in one. LA: Yes, Black creates a threat of ...
Rf3 checkmate, but--objectively--40. ... Ra3??! is a losing move, while 40. ...
Rf1+ leads to a forced draw.} (40... Rf1+) 41. Rd6+ {Or 41. ... e5+!.} (41. e5+
) 41... Ke7 42. Ke5 {Looks very menacing, but the White king is restricted by
his own pawns and has wandered into a deadly trap that seals his fate! LA:
True, 42. Ke5 loses, while 42. Rh6 wins! It's been a roller coaster.} (42. Rh6)
(42. e5) 42... f6+ 43. Rxf6 Ra5+ {Shutting the trap!} 44. Kf4 {The only move.}
Kxf6 {[#] The final blow. He could have tried for a stalemate with e5+, and
then if Rxe5 stalemate. Who says endgames can't be exciting?! LA: Very good
point regarding stalemate--which Black avoids by moving his king anywhere.} 45.
e5+ Rxe5 *

[Event "World Blitz Championship"]
[Site "Moscow RUS"]
[Date "2019.12.30"]
[Round "21.2"]
[White "Rauf Mamedov"]
[Black "Hikaru Nakamura"]
[Result "0-1"]
[ECO "C76"]
[WhiteElo "2659"]
[BlackElo "2736"]
[Annotator "Hess, Robert"]
[PlyCount "82"]
[EventDate "2019.12.29"]
[EventType "blitz"]

{The World Blitz Championship is a special event. It is a 21-round sprint
featuring the very best chess players and specialists who aim to take down a
big name. Magnus Carlsen went on to win the title, earning him the triple
crown as classical, rapid, and blitz world champion. But in order to take home
gold, he needed to outlast a determined Hikaru Nakamura, who is no stranger to
success in elite speed chess events. In an instructive game, Nakamura defeated
Rauf Mamedov, a fierce opponent in his own right, to catch Carlsen in the
standings and force a tiebreak.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 {
Not common at the highest level, though Mamedyarov is the main champion of
this line. Nakamura used the opening four times during the World Rapid and
Blitz and once at the Tata Steel India Grand Chess Tour blitz. Fun fact: he
won all five games!} 5. O-O ({If White wants space, the straightforward} 5. c3
Bd7 6. d4 Nge7 (6... g6 {likely takes us back to the game.}) 7. d5 Nb8 8. c4 {
gets the job done. Unlike the King's Indian Defense, which the Deferred
Steinitz resembles, here the Black bishop goes to e7 and impedes White's c4-c5
push.}) 5... Bd7 6. c3 g6 7. d4 Bg7 {[#]} 8. dxe5 {A day earlier, Sasikiran
reached this moment via transposition and tried 8. Re1. Though the opening
isn't to blame, it did not go well at all for the Indian grandmaster.} dxe5 9.
Bg5 f6 {A combative choice. Nakamura makes it clear that he is not settling
for a slight disadvantage; instead, he opts for a line that complicates the
game.} (9... Nge7 {feels natural, though the knight on e7 has no future while
White has an assortment of plans.}) 10. Be3 Nh6 11. Bb3 {Mamedov keeps his
opponent's king in the center for a couple more moves.} (11. Bc5 Bf8 12. Bxf8
Kxf8 13. Qd2 Nf7 14. Rd1 Be8 {eventually resulted in a draw in
Harikrishna-Mamedyarov from the World Rapid Championship.}) 11... Qe7 12. h3 {
Taking away the g4 square, though not particularly forceful.} ({Sergei
Zhigalko previously tried} 12. Bd5 {which has more concrete ideas.
Particularly for a blitz game, the position seems far easier to make
inaccuracies from the black side.} Ng4 (12... Nf7 13. b4 {is the point, as
White seizes control of the c5 square. Black can't castle kingside without
dropping material, whereas castling long walks directly into an attack.}) 13.
Bc1 f5 $5 {(If not for this, White can just push the knight to h6 next move).}
14. b3 O-O-O 15. Ba3 Qe8 16. Ng5 {might somehow be OK for Black, but based on
a cursory glance it looks extremely unpleasant.}) 12... Nd8 {[#] The battle is
beginning to take shape. Nakamura's main idea is to coordinate his pieces to
strike in the center with f5. Mamedov's task, however, is harder. White has
better coordination and can get a space advantage on the queen side, but lacks
obvious targets. Unable to figure out a clear plan in the short time control,
Mamedov's grip on the position will get looser and looser as the game
progresses.} 13. Qe2 ({It would seem counterintuitive to go about improving
your pieces by blocking your own bishop, but here} 13. c4 $1 {was quite strong.
Sure, Black can now castle, yet White's only undeveloped minor piece gains
immediate access to important squares. If Black attempts to take away the d5
square with say} O-O (13... Ne6 14. Nc3 O-O-O 15. Nd5 Qf7 {sees White with a
substantial edge, though no knockout just yet.}) 14. Nc3 c6 {then} 15. Qd2 Nhf7
16. Rad1 Be6 17. Na4 {is a nightmare for Black, whose queenside dark squares
are about to be infiltrated.}) 13... Nhf7 14. Nbd2 {The easy move to play in
blitz, but too accommodating. Where does that knight intend to go?} (14. c4 {
remains a good move, but is a turn late.} Ne6 (14... Bh6 15. Nc3 c6 16. Bb6 {
and White has firm control of the position.}) 15. Nc3 c5 {with the knight
heading to d4 gives Black an energetic approach that was previously
unavailable.}) 14... O-O 15. Rad1 Kh8 ({It was useful to throw in the
space-grabbing} 15... a5 {since} 16. a4 {puts the pawn on a vulnerable square,
whereas other moves allow Black further expansion that boots the bishop off of
its best diagonal.} Ne6 17. Nc4 Kh8 {with a battle, though plans for Black are
beginning to seem less ambiguous.}) 16. Ne1 Ne6 17. Nd3 Rfe8 18. Nb4 f5 {
The type of move you play when you must win and not much time remains on the
clock, but} (18... Bb5 {was good for equality. White would rather not block
with a piece, as} 19. Bc4 {and 19. Nc4 are both met by Nd6, when trades ensue.}
(19. c4 $6 Qxb4 20. cxb5 Qxb5 {is just vague compensation for the sacrificed
pawn. Thanks to the strong light-squared bishop White likely will be fine, but
will not attain an advantage.}) (19. Nc4)) 19. Nd5 Qf8 {[#]} 20. f3 {Mamedov
has been overly cautious, missing opportunities to pose serious challenges.} (
20. exf5 gxf5 21. Qh5 f4 {results in a trapped bishop that can't be captured.}
22. Ne4 Bc6 (22... fxe3 23. fxe3 {is devastating, since the knight on f7 can't
be protected.}) 23. Bc5 {tactically works out since the knight on f7 is loose
whereas 23. Bc1 leaves White with a positional edge.} (23. Bc1)) 20... Rad8 21.
Rfe1 Nd6 22. Bf2 {A costly inaccuracy that forces Mamedov to make a huge
concession; he needed to restrict Nakamura's bishop.} (22. a4 {was an
improvement.}) 22... Bb5 23. c4 {Leaving a hole on d4 that Nakamura' knight
needs no invitation to jump into.} Bc6 24. a4 Bxd5 25. exd5 {It typically is
difficult to choose which asymmetrical pawn structure is best. Regardless of
time control, the game continuation gives Black too much play.} (25. cxd5 Nd4
26. Qd3 {when Black does not have the pawn mobility he obtained in the game
and White has gained useful access to the c-file.}) 25... Nd4 26. Qd3 ({
The knight will remain a thorn, but capturing it would not have made Mamedov's
life any easier.} 26. Bxd4 exd4 27. Qd3 b6 {with Nb7-c5 to come. At best White
exchanges knights, when Black's bishop is far better than White's.}) 26... b6 {
Both stopping White from playing c5 and giving the knight access to the square
via b7.} (26... c5 {reinforces the knight on d4, but also makes Black's next
plan less obvious. It'll be a gradual buildup where any hasty break could
backfire.}) 27. Ba2 Nb7 28. Nb3 {[#]} Nxb3 {With ample time, Nakamura would
have liquidated on his own terms.} (28... Nc5 29. Nxc5 bxc5 $1 {is a
delightful recapture: Black ruins his own pawn structure in order to gain the
open b-file and create a new target.}) 29. Qxb3 a5 {Needing a win, Nakamura
smartly refrains from committing too soon.} (29... e4 30. fxe4 ({Interestingly,
a self-inflicted broken pawn structure might be the easiest path to holding.
White needs to keep the bishop pair to avoid either a good knight versus bad
bishop ending or a problematic bishops of opposite color ending.} 30. Qa3 $1 {
should alleviate the situation.}) 30... Nc5 31. Qa3 Nxe4 32. Qxf8+ Bxf8 33.
Bd4+ (33. Bb1 Nxf2 34. Kxf2 Bb4 {is horrid for White, who has absolutely no
control over the board.}) 33... Bg7 34. Bxg7+ Kxg7 35. Bb1 Nd6 {objectively
alright but practically tough as the bishop lacks a meaningful diagonal.}) 30.
Qb5 e4 31. fxe4 {The natural response, yet a mistake. Controlling the e4
square is essential.} (31. Bb1 {and the tension remains.}) 31... Nd6 32. Qc6
Nxe4 33. Qxc7 ({Out of necessity, a move like} 33. d6 {would have complicated
matters. Although Black has many responses to procure an advantage, White
garners some much-needed activity, which is especially important in blitz.})
33... Rc8 {It's impossible to see everything with mere seconds on the clock,
but this gives White one last chance. Instead, Nakamura had the powerful} (
33... Nxf2 34. Kxf2 Qb4 {when White would be forced to do something desperate
like} 35. Kf1 Qxb2 36. Re7 f4 (36... Rc8 37. d6 $1) 37. Rb1 Qd4 38. Rxg7 Qxg7 {
when White will grovel.}) 34. Qxb6 {Greed is not good, as this decision loses
the game.} (34. Qf4 {was absolutely mandatory, and White probably is not worse
anymore.}) 34... Rb8 {[#] Now Black wins a pawn, a piece, and the game.} 35.
Qa7 Rxb2 36. Bd4 Rxa2 37. Bxg7+ Qxg7 38. Qxg7+ Kxg7 39. c5 Rxa4 40. d6 Rc4 41.
Rd5 Nxd6 {In a win-or-bust game, Nakamura displayed the flexibility and
tenacity of a champion. While he ultimately had to settle for the silver medal,
Nakamura proved that he is fully deserving of his top blitz ranking.} 0-1

[Event "?"]
[Site "?"]
[Date "2019.11.26"]
[Round "?"]
[White "6.e5 d5 7.Bb5"]
[Black "Kaufman New Rep"]
[Result "*"]
[ECO "C54"]
[Annotator "Kaufman, Larry / Hartmann, John"]
[PlyCount "62"]
[EventDate "2019.??.??"]

{[%evp 0,62,26,26,32,37,36,15,18,7,7,-7,-15,-9,-14,0,-2,-2,-2,-6,-10,-10,-7,6,
16,-13,-16,-2,-11,0,0,-4,-20,-21,-21,-19,-19,-13,-16,-15,3,8,6,8,18,20,30,34,
24,13,26,31,13,37,32,26,22,19,17,21,26,27,31,22,26]} 1. e4 e5 2. Nf3 Nc6 3. Bc4
(3. d4 exd4 4. Bc4 Bc5 5. O-O d6 6. c3 Bg4 7. Qb3 {Von der Lasa} Bxf3 8. Bxf7+
Kf8 9. gxf3 dxc3 10. Bxg8 Rxg8 11. Nxc3 Nd4 12. Qd1 Qf6 13. Nd5 Qf7 14. Kg2 $6
(14. b4 $1 {Fishbein}) 14... c6 15. Ne3 Qg6+ 16. Kh1 Qh5 17. Kg2 $6 Rd8 18. b4
Bb6 $15 {[%cal Gd4e6,Ge6f4]}) 3... Bc5 4. c3 Nf6 5. d4 exd4 6. e5 $5 d5 7. Bb5
(7. Be2 {Jobava variation} Ne4 8. cxd4 Bb6 {is all he gives for Black (or
White)}) 7... Ne4 8. cxd4 Bb6 (8... Bb4+ 9. Bd2 Bxd2+ 10. Nbxd2 O-O 11. Bxc6
bxc6 12. Rc1 $6 (12. O-O $1 {jh}) 12... Ba6 (12... Rb8 $5) 13. Qa4 Nxd2 (13...
Qc8 $5) (13... Bd3 $5) 14. Kxd2 Bb5 15. Qa3 a6 16. Rc2 $14) 9. Nc3 O-O 10. Be3
Bg4 11. h3 (11. Qc2 $143 Bxf3 12. gxf3 Ng5 13. Bxc6 bxc6 14. O-O-O Nxf3 15. Qe2
Nh4 16. Rhg1 f6 {substandard!} (16... Qd7 $142 17. Qh5 (17. Bg5 Qf5 (17... Ng6)
18. Bxh4 Qf4+ 19. Kc2 Qxh4 {0-1 (49) Abdelmoumen,A (2222)-Vegjeleki,A (2145)
ICCF email 2008}) 17... Nf5 18. Bh6 Nxh6 19. Rxg7+ {1/2-1/2 (19) Rubio Doblas,
R (2242)-Anderson,B (2465) ICCF email 2012}) 17. Qh5 Ng6 18. Rg3 Re8 19. f4 {
substandard!} (19. Rh3 $5 {jh} Nf8 20. Bh6 g6 21. Rg1 {with initiative; SF and
L0 like} Qe7 22. Bxf8 Rxf8 23. Rxg6+ hxg6 24. Qh8+ Kf7 25. Rh7+ Ke6 26. Rxe7+
Kxe7 27. Qg7+ Rf7 28. Qxg6 $16) 19... fxe5 20. fxe5 Qh4 21. Qe2 Qe7 22. Qh5 $11
) 11... Bh5 12. Qc2 {[#]} Bg6 (12... Bxf3 13. gxf3 Ng5 14. O-O-O (14. Bxc6
Nxf3+ 15. Ke2 Nxd4+ 16. Bxd4 Bxd4 17. Bxb7 Rb8 18. Bc6 Rb6 19. Ba4 Qg5 (19...
Bxe5 20. Bb3 Re8 21. Kf1 Rd6 22. Re1 c6 23. Rg1 Rde6 24. Re3 Qe7 25. Ne2 $16)
20. Rae1 c5 21. Nd1 Qxe5+ 22. Kf1 Qf4 23. Rg1 g6 24. Rg3 $14) 14... Nxf3 15.
Bxc6 bxc6 16. Qe2 Nh4 17. Rhg1 Qd7 (17... f6 18. Qg4 Ng6 19. h4 $14) 18. Bg5
Nf5 $2 {another line ends with a dubious move for opponent} (18... Ng6 {
1/2-1/2 (60) Vocaturo,D (2627)-Moradiabadi,E (2539) Sitges 2019}) 19. Bf6 g6
20. Qg4 $14) (12... Nxc3 13. bxc3 f6 14. exf6 Qxf6 15. Be2 Rae8 (15... Qg6 16.
Qxg6 Bxg6 17. O-O Rae8 18. a4 $14) (15... Na5 16. O-O Bxf3 (16... Rae8 17. Ne5
Bxe2 18. Qxe2 Qe6 19. Rae1 Nc4 20. f4 (20. Nxc4 {1/2-1/2 (44) Aronian,L (2752)
-So,W (2754) Zagreb 2019}) 20... Nd6 21. Qc2 c6 22. Rf3 $14) 17. Bxf3 c6 18.
Rae1 Rae8 19. Bc1 Nc4 20. Be2 Re6 {1/2-1/2 (36) Anand,V (2767)-Aronian,L (2752)
Stavanger 2019}) (15... Bg6 16. Qb3 Qd6 17. O-O Be4 (17... Rae8 18. Rae1 Na5
19. Qa4 $14) 18. Nd2 Bg6 19. a4 $14) 16. O-O $14) (12... Rb8 13. Nxe4 Nb4 (
13... dxe4 14. Qxe4 Bxf3 15. gxf3 f5 16. Qf4 Qd5 17. Bxc6 Qxc6 18. O-O Rbd8 19.
Rad1 $14) 14. Nf6+ gxf6 15. Qd2 a6 16. Ba4 Ba5 17. O-O Bxf3 18. a3 Nc6 19. b4
Bb6 20. gxf3 fxe5 21. Bxc6 bxc6 22. Bh6 Re8 23. Kh2 {all computer moves,
concrete, no logic} Re6 24. dxe5 Qh4 25. Rg1+ Rg6 26. Raf1 Re8 27. Bf4 Qh5 28.
Qd3 a5 29. Rg4 $14) (12... Ba5 $1 13. Be2 {safe line} (13. O-O Bxf3 14. gxf3
Nxc3 (14... Nxd4 15. Bxd4 Qg5+ 16. Kh1 Bxc3 17. bxc3 Qf5 18. Kg2 Qg5+ 19. Kh1
Qf5 20. Rfc1 Qxh3+ 21. Kg1 Ng5 22. Be2 Nxf3+ 23. Bxf3 Qxf3 24. Rd1 Qg4+ 25. Kf1
b6 26. Rd3 Qf5 27. Qd1 Rfe8 28. Qf3 Qxf3 29. Rxf3 c5 30. Be3 Rxe5 31. a4 f6 32.
a5 {"White is half a pawn down (bishop for four pawns) but will probably win a
pawn shortly and have the better of a likely draw;"}) (14... Ng5 15. Kg2 Bxc3
16. bxc3 Ne6 17. f4 f5 18. Qa4 Qd7 19. Qd1 a6 20. Bd3 b5 21. Kh2 {"I would
prefer White, but only slightly"}) 15. bxc3 Qd7 16. Kh2 Nxd4 17. cxd4 Qxb5 18.
Rg1 g6 19. Rad1 $14) 13... f5 (13... f6 14. exf6) 14. exf6 Nxf6 15. O-O Bb6 16.
Rad1 Qd6 17. Rfe1 Rad8 18. a3 $11 {"but a tad easier to play White, who has
ideas like Nh4, Ng5, Nh2, Na4, Qc1, etc."}) 13. Qb3 Ne7 14. O-O c6 15. Bd3 Nd2
(15... Nf5 16. Rfe1 Nxe3 (16... Nxd4 17. Bxd4 Bxd4 18. Nxe4 dxe4 19. Bxe4 Bxe4
20. Rxe4 Bb6 21. a4 Rb8 22. Qc2 {[%cal Ga4a5,Ga5a6]} (22. e6 Qd5 23. Qxd5 cxd5
24. exf7+ Rxf7 25. Re5 Rd8 26. Kf1 Rf4 27. a5 Bc5) 22... a5 23. e6 fxe6 24.
Rxe6 Qd5 25. Rae1 Qc5 26. Qb3 Kh8 27. R1e2 $14) 17. Rxe3 Ng5 18. Bxg6 fxg6 (
18... Nxf3+ 19. Rxf3 hxg6 (19... fxg6 20. Ne2 $14) 20. Rd1 f6 21. exf6 Rxf6 22.
Na4 Rxf3 23. Qxf3 Qf6 24. Qe3 Ba5 {[%cal Gd1d3,Gd3e3,Ge3e2]} 25. Rd3 Qf7 26.
Qe2 Re8 27. Re3 Rxe3 28. Qxe3 $11) 19. Nxg5 Qxg5 20. Ne2 $14 {[%csl Ge5][%cal
Ge5e8]}) 16. Nxd2 Bxd3 17. Rfe1 Bg6 (17... Ng6 18. Na4 Bf5 19. Nxb6 axb6 20. f4
Qd7 21. Nf3 $14) (17... Nf5 18. Na4 $14) 18. Nf3 Nf5 19. Na4 {"NIC Yearbook
calls this equal without further analysis, but I think White is at least still
for choice."} f6 $6 (19... Ba5 20. Re2 Nxe3 (20... Qe7 21. Bd2 $14) 21. Qxe3
$14) (19... h6 20. a3 Re8 21. Nxb6 axb6 22. Rad1 Nxe3 23. Rxe3 $14) 20. Nxb6
Qxb6 21. Qc3 Rae8 22. Bf4 fxe5 23. Bxe5 Qd8 24. Re2 (24. a4 a6 25. a5 $16)
24... Rf7 25. Rae1 Rfe7 26. Qd2 Nh6 27. Bf4 Nf7 28. Rxe7 Rxe7 29. Ne5 Nxe5 30.
Bxe5 Qd7 31. Re3 h6 {1/2-1/2 (31) Liang,A (2590)-Nakamura,H (2746) Saint Louis
2019} *

[Event "2019 Pan-American Intercollegiate Champi"]
[Site "ChessStream"]
[Date "2019.12.30"]
[Round "6"]
[White "ALEKSEY SOROKIN"]
[Black "IM EYAL GRINBERG"]
[Result "1/2-1/2"]
[ECO "E14"]
[WhiteElo "2604"]
[BlackElo "2544"]
[Annotator "Lawrence, Al"]
[PlyCount "65"]
[EventDate "2019.??.??"]
[Source "ChessStream.com"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. b3 b6 6. Bd3 Bb7 7. O-O Bd6 8. Nbd2
Nbd7 9. Bb2 O-O 10. Qe2 c5 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Bxe4 14. Qxe4 Nf6
15. Qh4 Nd7 16. Qe4 Nf6 17. Qh4 Nd7 18. Qg4 Nf6 19. Qh3 cxd4 20. Nxd4 Bc5 21.
Rad1 Qc7 22. Qf3 a6 23. Nc6 Rac8 {[#]} 24. Bxf6 (24. Rd3 Qxc6 (24... Bd6 25.
Bxf6 gxf6 26. Rfd1) 25. Qxf6 gxf6 (25... e5 26. Qxe5 f6) 26. Rg3+) (24. Ne5)
24... gxf6 25. Qxf6 Qxc6 26. Qg5+ Kh8 27. Qf6+ Kg8 28. Rd3 Bd6 29. Qg5+ Kh8 30.
Qf6+ Kg8 31. Qg5+ Kh8 32. Qf6+ Kg8 33. Qg5+ {[#]} 1/2-1/2

[Event "2019 Pan-American Intercollegiate Ch"]
[Site "?"]
[Date "2019.12.30"]
[Round "?"]
[White "Reshef, Omer"]
[Black "Pavlo, Vorontsov"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2474"]
[BlackElo "2539"]
[Annotator "Reshef, Omer"]
[PlyCount "65"]
[EventDate "2020.01.06"]
[WhiteTeam "UT Dallas"]
[BlackTeam "Texas Tech"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 a6 5. h3 b5 {A somewhat unorthodox opening.
Black aims to counter-attack white's center after development is completed.} 6.
Bd3 Nd7 7. a4 b4 8. Ne2 Bb7 9. O-O Ngf6 10. Ng3 c5 11. c3 bxc3 12. bxc3 Qc7 13.
a5 {A double edge move. Weaking the pawn in order to gain more space and limit
the d7 Knight.} O-O 14. Bg5 h6 15. Be3 {[#]} d5 $6 {Forcing a direct reaction.
However, it's probably a step in the wrong direction.} (15... Rfc8 {During the
game I felt like this might be more natural continuation. That said, d5 leads
to white's advantage.} 16. d5 $1 (16. Qd2 Kh7)) (15... e6 {is the computer's
suggestion.}) 16. e5 $1 Ne4 17. Ne2 {Maintaining the pressure.} (17. Bxe4 dxe4
18. Nd2 f5 19. exf6 exf6 20. Ngxe4 cxd4 21. cxd4 {White is better, but black
has chances.}) 17... Rfc8 18. Nh2 f6 $6 {Trying to break out.} (18... cxd4 19.
cxd4 Nc3 $4 20. Nxc3 Qxc3 21. e6 fxe6 22. Bxg6 $18 {The black's pieces are too
passive. White with decisive advantage.}) 19. Rb1 $1 {Took me a while to find
this move. Not so obvious at first how to expolit f6.} (19. Bxe4 dxe4 20. e6
Nf8 21. d5 c4 (21... Rd8) 22. Rb1 {Was my first idea. but wasnt sure how to
continue, in case of Re8, or Rd8 the prior move.}) 19... e6 $2 (19... Nxc3 $6 {
Critical} 20. Nxc3 cxd4 21. e6 $18) (19... Rab8 $2 20. e6 Nf8 21. Bxe4 dxe4 22.
Bf4 {[%cal Gf4b8]}) (19... Bc6 20. f3 $1) 20. Bxe4 dxe4 21. Nf4 {[%cal Gf4e6,
Gf4g6] Too many weaknesses} Nf8 22. exf6 Bxf6 23. Ng4 Bg5 (23... Bg7 {Would
have been slightly stronger.}) 24. Nxe6 $1 Nxe6 25. Qb3 {[%cal Gb3e6,Gb3b7]}
Qd6 26. Qxb7 cxd4 27. Bxg5 {A pretty combination} Nxg5 (27... hxg5 28. Nh6+ $18
) 28. Rb6 {[%cal Gb6g6]} Rcb8 (28... Rab8 29. Qxc8+ Rxc8 30. Rxd6) 29. Qxa8
Qxb6 30. axb6 Rxa8 31. Nf6+ Kf7 32. Nd7 Ke6 33. b7 {[#]} 1-0

[Event "2019 Pan-American Intercollegiate Champi"]
[Site "ChessStream"]
[Date "2019.12.30"]
[Round "6"]
[White "EVGENY SHTEMBULIAK"]
[Black "IM TITAS STREMAVICIUS"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2601"]
[BlackElo "2543"]
[Annotator "Shtembuliak, Evgeny"]
[PlyCount "67"]
[EventDate "2019.??.??"]
[Source "ChessStream.com"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 Be7 7. Bd3 c6 8.
Nge2 h6 9. Bh4 Nh5 10. Bxe7 Qxe7 11. Qd2 Nb6 12. O-O O-O 13. f3 Nf6 14. Rae1
Be6 15. b3 Rad8 16. e4 (16. Bb1) (16. Nf4) 16... dxe4 17. fxe4 Bg4 18. e5 Nfd5
19. Bb1 c5 {[#]} (19... Bxe2 20. Nxe2 Qg5) 20. Ne4 Bxe2 21. Rxe2 (21. Qxe2 cxd4
22. Qd3 g6 23. Qxd4) 21... cxd4 22. Nf6+ Kh8 23. Re4 d3 {[#]} (23... Qc5) 24.
b4 (24. Rh4 Qc5+ 25. Kh1 Qe3) 24... Nxf6 25. Rxf6 Kg8 26. Bxd3 Rxd3 (26... Nd7
27. Rg4 Nxf6 28. Qxh6 g6 29. Rh4 Nh5 30. Rxh5) (26... Rfe8 27. Rg4 Rxd3 28.
Qxd3 Nd7) 27. Qxd3 gxf6 28. Rg4+ Kh8 29. Qe3 Kh7 30. Rh4 Kg6 31. Rxh6+ Kg7 32.
exf6+ Qxf6 33. Rxf6 Kxf6 34. Qf3+ 1-0

[Event "2019 Pan-American Intercollegiate Champi"]
[Site "ChessStream"]
[Date "2019.12.30"]
[Round "6"]
[White "RAZVAN PREOTU"]
[Black "ANDREY BARYSHPOLETS"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2549"]
[BlackElo "2678"]
[Annotator "Lawrence, Al"]
[PlyCount "136"]
[EventDate "2019.??.??"]
[Source "ChessStream.com"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. Bd3 dxe5 8.
dxe5 Nb4 9. Be4 Qxd1+ 10. Kxd1 Nd7 11. Bd2 Nc5 12. Bxb4 Nxe4 13. Bxf8 Rxf8 14.
Ke2 Ke7 15. Rc1 Bd7 16. Ke3 f5 17. Nbd2 Nxd2 18. Nxd2 f4+ 19. Kd4 Bc6 20. Nc4
Rad8+ 21. Nd6 g5 22. Rc2 g4 23. g3 h5 24. a4 h4 25. a5 a6 26. Kc5 fxg3 27. fxg3
h3 (27... Rf3 28. Ra3 hxg3 29. hxg3 Rxa3 30. bxa3 Rh8 31. Kb6 Rh3 32. Nxb7 Bxb7
33. Rc7+ Kd8 34. Rxb7 Rxg3 35. Kxa6 Re3) 28. Rc4 Rf2 29. Rxg4 Rc2+ 30. Kd4 Rxh2
31. Rg7+ Kf8 32. Rg5 Ke7 33. Rg7+ Kf8 34. Rg5 Ke7 35. Ke3 Rxd6 (35... Rxb2 36.
Rg7+ Kf8 37. Rh7 Rb3+ 38. Kd4 Rxg3 39. Rh8+ Ke7) 36. exd6+ Kxd6 37. Rh5 Rxb2
38. Rxh3 Rb3+ 39. Kf4 e5+ 40. Kg5 e4 41. Rh6+ (41. Kh5) 41... Ke5 42. g4 e3 43.
Rh7 Ke4 44. Re7+ Kf3 45. Rf7+ Kg3 46. Rff1 Rb5+ 47. Kf6 Kxg4 $11 {[#]} (47...
e2 48. Rg1+ Kf2 49. Rge1 Bf3 50. g5 Be4 51. g6 Rf5+ 52. Kg7 Rg5) 48. Rae1 $2 (
48. Ra4+ Kh3 (48... Kg3 49. Ra3 Kg2 50. Re1) 49. Ra3 Kg2 50. Re1) 48... Bg2 49.
Rg1 Kf3 (49... Rf5+ 50. Ke6) 50. Rxg2 Kxg2 51. Rxe3 Rxa5 52. Rb3 b5 53. Ke5 Ra4
54. Kd5 b4 55. Kc4 a5 56. Re3 Ra1 57. Rd3 Kf2 58. Rh3 Ke2 59. Rh2+ Ke3 60. Rh3+
Kd2 61. Rh2+ Kc1 62. Rg2 Kb1 63. Rh2 Ra2 64. Rh1+ Kb2 65. Rh3 Ra1 66. Rb3+ Ka2
67. Rh3 Rc1+ 68. Kb5 b3 0-1

[Event "52nd US Open"]
[Site "Fort Worth, TX USA"]
[Date "1951.07.20"]
[Round "11"]
[White "Albert Sandrin"]
[Black "James T Sherwin"]
[Result "1-0"]
[ECO "D45"]
[Annotator "Pandolfini, Bruce"]
[PlyCount "45"]
[EventDate "1951.07.09"]

1. c4 Nf6 2. d4 c6 3. Nc3 d5 {[#]} 4. Nf3 (4. e3) (4. cxd5) (4. Bg5) 4... e6 5.
e3 (5. Bg5) (5. cxd5) 5... Nbd7 6. Qc2 (6. Be2) 6... dxc4 7. Bxc4 Bd6 (7... Bb4
) (7... Nb6) 8. O-O (8. e4 e5) 8... O-O 9. Rd1 Qe7 10. a3 e5 11. e4 exd4 12.
Nxd4 Nc5 13. f3 (13. Nf5 Bxf5) 13... Qc7 14. g3 (14. g4) 14... Ncd7 (14... b5
15. Ncxb5) 15. Kg2 Nb6 16. Ba2 a6 17. Bg5 Nh5 18. f4 h6 (18... Bg4) 19. Bh4 Be7
(19... Bg4) 20. Bxe7 Qxe7 21. e5 g5 (21... c5) (21... Kh8) 22. Qg6+ Ng7 23. Ne4
1-0

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM I"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/b1q3k1/8/6p1/7n/6P1/5P2/5RKQ b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Qxg3+ (1... Kf8) 2. Qg2 Qxg2# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM II"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/2k5/8/2n5/8/8/NP6/K5Rb b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Nb3+ 2. Kb1 Be4# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM III"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "5k2/8/8/2b5/3nn3/8/6B1/5RK1 b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Nf3+ 2. Kh1 Ng3# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM IV"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "2k5/4Q3/2q1b3/8/8/4b3/4N1P1/4RK2 b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Qf3+ 2. gxf3 Bh3# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM V"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/6R1/1k5P/r7/n7/8/PPP5/RKN3r1 b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Nc3+ 2. bxc3 Rb5# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM VI"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/4k3/8/7r/4n2n/6q1/R3Q1PP/7K b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Qxh2+ 2. Kxh2 Nf3# 0-1

[Event "Charlotte Winter IM "]
[Site "?"]
[Date "2017.01.18"]
[Round "5"]
[White "Del Campo, Martin"]
[Black "Francisco, Richard"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2322"]
[BlackElo "2256"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "114"]
[EventDate "2017.??.??"]
[SourceDate "2020.01.24"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Nxd5 6. exd5 Bb4+ 7. Bd2 Qe7+
8. Qe2 Bxd2+ 9. Kxd2 Qxe2+ 10. Bxe2 Ne7 11. d6 cxd6 12. Nxd4 a6 13. Rhe1 O-O
14. Bf3 Nc6 15. Nf5 Rb8 16. Nxd6 b5 17. Bd5 Nb4 18. Bb3 Rb6 19. Nxc8 Rxc8 20.
Re7 Rd6+ 21. Ke1 Nc6 22. Rxf7 Nd4 23. Rd1 Nxb3 24. Rxd6 Kxf7 25. cxb3 Ke7 26.
Rxa6 Rc2 27. a4 Rxb2 28. axb5 Rxb3 29. Rb6 Rb2 30. Rb8 Ke6 31. b6 Ke5 32. b7
Kd4 33. Rg8 Rxb7 34. Rxg7 Kd3 35. f3 h6 36. Rh7 {[#]} Rb1+ (36... Ke3 37. Re7+
Kf4 (37... Kd4 38. h4 Rb1+ 39. Kf2 d5 40. g4 Kc3 41. g5 hxg5 42. hxg5 d4 43.
Rc7+ Kd2 44. g6) 38. Re4+ Kf5 39. g4+ Kg5 40. Kf2 Kh4 41. Re5 Rb2+ 42. Ke3 Rb3+
(42... Rxh2 43. Rh5+ Kg3 44. Rxh2 Kxh2 45. f4) 43. Ke4 Rb4+ 44. Kf5 Rb6 45. Rd5
Kh3 46. f4 Kxh2 47. g5) 37. Kf2 d5 38. Rxh6 Rb2+ 39. Kg3 d4 40. h4 (40. f4 Ke4
41. Re6+) 40... Ke2 {[#]} 41. Kf4 (41. h5 d3 42. Re6+ Kf1 43. Rd6 Ke2 44. h6 d2
45. h7 Rb8) (41. Re6+ Kf1 (41... Kd2 42. h5 d3 43. h6 Rb8 44. f4 Kc2 45. f5 d2
46. Rc6+ Kd3 47. Rd6+ Ke2 48. Kf4 d1=Q 49. Rxd1 Kxd1 50. h7) 42. Rd6 Rxg2+ 43.
Kf4 Rd2 (43... Rh2 44. Rxd4 Rxh4+ 45. Ke5) 44. h5 (44. Ke4 Rh2 45. Rxd4) 44...
d3 45. h6) 41... d3 42. Re6+ Kf2 43. Rd6 Rb4+ 44. Kg5 Ke3 45. h5 d2 46. Rxd2 (
46. h6 Rb5+ 47. Kf6 Rb6) 46... Kxd2 47. f4 {[#]} Ke3 (47... Rb8 48. g4 (48. f5
Rg8+) 48... Ke3 49. h6 Rg8+ 50. Kf6 Kxf4 (50... Rxg4) 51. h7 Rh8) 48. f5 Rb8
49. f6 Ke4 (49... Rg8+ 50. Kf5 Rxg2 51. f7 Rf2+ 52. Ke6) 50. h6 (50. f7 Ke5 51.
Kg6 Ke6 52. h6 Rf8 53. h7) 50... Rg8+ 51. Kh5 Kf5 52. h7 {[#]} Rxg2 (52... Rb8
53. Kh6 Kxf6 54. g4 Kf7 55. g5 Rb6+ 56. Kh5 Kg7) 53. Kh6 Rg6+ 54. Kh5 Rg1 55.
Kh6 Rg6+ 56. Kh5 Rg1 57. Kh6 Ke5 1/2-1/2

[Event "FIDE World Cup"]
[Site "Baku"]
[Date "2015.09.22"]
[Round "4.4"]
[White "Wojtaszek, Radoslaw"]
[Black "Giri, Anish"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2741"]
[BlackElo "2793"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "82"]
[EventDate "2015.09.11"]
[EventType "k.o."]
[EventRounds "7"]
[EventCountry "AZE"]
[SourceTitle "CBM 169"]
[Source "ChessBase"]
[SourceDate "2015.11.10"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. b3 Bb4 6. Bb2 Ne4 7. Nge2 Qf6 8. f3
Bxc3+ 9. Bxc3 Nxc3 10. Nxc3 O-O 11. f4 c5 12. cxd5 cxd4 13. Qxd4 Qxd4 14. exd4
exd5 15. Nxd5 Nc6 16. Nc7 Rb8 17. d5 Ne7 18. O-O-O Rd8 19. Bc4 Kf8 20. Rhe1 Bg4
21. Rd2 Rbc8 22. h3 (22. Kb2 {Exercise 1500}) 22... Bd7 {[#]} 23. g4 (23. Kb2
Rxc7 24. d6) 23... Rxc7 24. d6 Rxc4+ 25. bxc4 Nc6 26. c5 g6 27. Rb2 Bc8 28. Re4
Kg7 29. Kd2 h5 30. Kc3 hxg4 31. hxg4 Rh8 32. Re3 Rh1 33. Rd3 Nb8 34. g5 Rc1+
35. Kd4 Nd7 36. Rb5 a6 37. Ra5 Nb8 38. Ke3 Bd7 39. Rb3 Bc6 40. Kd4 Nd7 41. Rc3
Rf1 0-1

[Event "World Cup"]
[Site "Skelleftea"]
[Date "1989.08.??"]
[Round "6"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Vaganian, Rafael A"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2655"]
[BlackElo "2585"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "123"]
[EventDate "1989.08.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "SWE"]
[EventCategory "16"]
[SourceTitle "CBM 014"]
[Source "ChessBase"]
[SourceDate "1990.02.01"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 c6 6. Bf4 Ne7 7. Qh5 Nd7 8.
Bg5 h6 9. Nf3 Rg8 10. O-O hxg5 11. Nxg5 g6 12. Qh7 Nf8 13. Qxf7+ Kd7 14. Rae1
Kc7 15. Re2 Bd7 16. f4 Rh8 17. Rfe1 Nf5 18. Bxf5 gxf5 19. Qg7 Rh5 20. Nf7 Qh4
21. g3 Qg4 22. Qe5+ Kb6 23. a3 Re8 24. Nxd5+ cxd5 25. Qf6+ Bc6 26. Rxe8 Bxe1
27. Rxe1 Nd7 28. Qd8+ Ka6 29. b4 Nb6 30. Ng5 Rh6 31. Qf8 Rg6 32. Qc5 Nc4 33.
Ne6 Rxe6 34. Rxe6 Qd1+ 35. Kg2 {[#]} Qxc2+ (35... b6 {Exercise 2000} 36. Qxc6
Ne3+ 37. Rxe3 (37. Kh3 Qg4#) 37... Qf1+ 38. Kxf1) 36. Kh3 Qa4 37. Kh4 Nd2 38.
Qxd5 Qb5 39. Qxb5+ Kxb5 40. Re5+ Kc4 41. Rxf5 Nf3+ 42. Kh5 Nxh2 43. g4 Bf3 44.
Rg5 Kxd4 45. Kh4 Ke4 46. f5 Bd1 47. Rg7 Ke5 48. Kh3 Nxg4 49. Rxg4 Bc2 50. Rg5
Bxf5+ 51. Kg3 Kf6 52. Kf4 Bd7 53. Re5 Bc6 54. Ra5 a6 55. Re5 b6 56. Re2 a5 57.
Re5 axb4 58. axb4 Bg2 59. Rb5 Ke6 60. Ke3 Bf1 61. Rxb6+ Ke5 62. Rc6 1-0

[Event "New York Masters tournament"]
[Site "?"]
[Date "1967.??.??"]
[Round "?"]
[White "Neil McKelvie"]
[Black "Ariel Mengarini"]
[Result "*"]
[ECO "C70"]
[Annotator "McKelvie, Neil"]
[PlyCount "59"]
[EventDate "1967.??.??"]
[SourceDate "2020.01.31"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bb4 5. c3 Ba5 6. O-O Nge7 7. d4 exd4 8.
cxd4 d5 9. exd5 Qxd5 (9... Nxd5 10. Bxc6+) 10. Bb3 Qh5 11. d5 Na7 12. Bd2 Bxd2
13. Qxd2 O-O 14. Re1 Ng6 15. Nc3 Bg4 16. Nd4 Rae8 17. Ne4 Nc8 18. f3 Bd7 19.
Rac1 Qe5 {[#]} 20. Ne6 fxe6 21. dxe6 Bc6 (21... Bxe6 22. Nc5 Bxb3 23. Rxe5) 22.
e7+ Kh8 23. exf8=Q+ Rxf8 24. Ng5 Qf5 25. Nf7+ Rxf7 26. Bxf7 Qxf7 27. Qd8+ Qf8
28. Qxf8+ Nxf8 29. Rxc6 bxc6 30. Re8 *

