[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "GM Viktor Korchnoi"]
[Black "IM Geert Van der Stricht"]
[Result "0-1"]
[Annotator "Soltis, Andy"]
[SetUp "1"]
[FEN "6rk/5pp1/2pnq1Rp/1p1pB2Q/2nP4/2PB1P2/P4PKP/8 b - - 0 1"]
[PlyCount "0"]

{[#]}  0-1

[Event "Las Palmas"]
[Site "Las Palmas ESP"]
[Date "1977.05.??"]
[Round "13"]
[White "Stefano Tatai"]
[Black "Anatoly Karpov"]
[Result "0-1"]
[ECO "A34"]
[Annotator "Gibbons, Bart"]
[PlyCount "60"]
[EventDate "1977.??.??"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 g6 6. Bg2 Bg7 7. Qa4+ Nc6 8.
Ng5 e6 9. Nge4 Nb6 10. Qb5 c4 11. Na4 O-O 12. Nxb6 axb6 13. Qxc4 e5 14. Qc2 Nd4
15. Qb1 f5 16. Nc3 e4 17. d3 b5 18. Be3 b4 19. Nd1 Re8 20. dxe4 fxe4 21. Bxd4
Qxd4 22. a3 Bg4 23. Qc2 Qd3 24. exd3 exd3+ {[#]} 25. Kd2 Re2+ 26. Kxd3 Rd8+ 27.
Kc4 Rxc2+ 28. Kxb4 Rcd2 29. f3 Bf8+ 30. Ka5 Bd7 0-1

[Event "New York"]
[Site "?"]
[Date "1918.10.23"]
[Round "1"]
[White "Capablanca, Jose R"]
[Black "Marshall, Frank J"]
[Result "1-0"]
[ECO "C89"]
[Annotator "King, Alex"]
[PlyCount "71"]
[EventDate "1918.??.??"]

1. e4 {The 1918 Manhattan Chess Club Championship was a seven-player double
round-robin; Capablanca, arguably already at his peak strength, conceded only
three draws, winning his other nine games.} e5 {Capablanca had crushed
Marshall in a 1909 match, and some writers would later make the rather
exaggerated claim that Marshall spent the intervening years developing the
gambit in this game as a surprise weapon.} 2. Nf3 Nc6 ({In none of his Black
games against Capablanca since 1909 had Marshall allowed the Spanish; mainly
he chose} 2... Nf6 {1-0 (61) Capablanca,J-Marshall,F St Petersburg 1914}) 3.
Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O $5 {At the time this was
almost unheard of; Marshall even claimed in his book Comparative Chess (1932)
that it was his invention, although in fact it had been played a few times
before.} ({Standard is} 7... d6) 8. c3 ({In his notes to the tournament book,
Capablanca explains that Black's move-order "has been supposed to be
undesirable" due to} 8. Bd5 $6 {but this was tested for the first time in a
subsequent round and Marshall demonstrated that Black is at least equal after}
Nxd5 9. exd5 Nb4 10. Nc3 Bb7 {0-1 (27) Black,R-Marshall,F New York,NY 1918}) ({
Later various "Anti-Marshall" moves were developed, e.g.} 8. a4 $5 {1-0 (58)
Yates,F-Spencer,E Stratford-upon-Avon 1925}) 8... d5 $5 {The now-famous
Marshall Attack, sacrificing a pawn for quick development.} ({The main line is
} 8... d6) 9. exd5 Nxd5 {In fact this is the real novelty.} ({Probably neither
player knew the prior offhand game} 9... e4 $5 10. dxc6 exf3 11. g3 {1-0 (44)
Walbrodt,C-Allies Havana 1893} ({Marshall himself won an offhand game after} 
11. d4 $6 {which Chernev would later fancifully date from 1917 (anticipating
the current game) although Comparative Chess gives it without a year.})) 10.
Nxe5 Nxe5 11. Rxe5 Nf6 $5 {Marshall's original interpretation was rather
direct (not to say primitive) compared to the gambit's modern reputation for
sophistication and even drawishness.} ({Only much later did} 11... c6 $5 {
appear and become the main line - 0-1 (35) Dulanto,A-Alexander,C Buenos Aires
1939}) 12. Re1 Bd6 13. h3 ({Worse would be} 13. d4 Ng4 14. g3 $2 Nxh2 $1 $36
15. Kxh2 $140 $2 Qh4+ 16. Kg1 Bxg3 $1 $19 {0-1 (27) Gerhardt, W-Rellstab,L
Berlin 1935}) 13... Ng4 $5 {Anyway!} ({A "normal" move like} 13... Bb7 $5) ({or
} 13... c5 $5 {would be more in the modern Marshall spirit of general
compensation.}) 14. Qf3 $1 {Capablanca, one of the greatest defenders of his
time, handles Marshall's surprise variation coolly and confidently.} ({Much
too dangerous would be} 14. hxg4 $2 Qh4 {e.g.} 15. Qf3 Bh2+ $1 ({Capablanca's
My Chess Career (1920) gave} 15... Qh2+ $2 16. Kf1 Bxg4 $2 17. Qxg4 Qh1+ 18.
Ke2 Rae8+ {"and wins", but in 1954 the Soviet player Palkin discovered} 19. Be6
$3 $18) 16. Kf1 Bxg4 17. Qe4 {0-1 (27) Fink,L-Kantorovich, V corr 1957} Bf4 $1
18. g3 Qh2 $1 19. gxf4 Bh3+ 20. Ke2 Rfe8 $19) 14... Qh4 $1 15. d4 ({Again not} 
15. hxg4 $2 Bh2+ $1 16. Kf1 Bxg4 17. Re4 Bf4 $1 $19) ({Capablanca also gives} 
15. Re8 $2 Bb7 $1 16. Rxf8+ Rxf8 17. Qxg4 Re8 $1 18. Kf1 {and now stronger
than his 18...Qe7 is} Be4 $3 19. g3 Bd3+ 20. Kg2 Qe7 $19 {with a devastating
attack.}) 15... Nxf2 $5 {Although one could say Marshall was "forced" to
continue burning his bridges here, generally he was eager to play in this
style at almost every opportunity.} ({Kasparov's My Great Predecessors, Part I
(2003) attributes the alternative} 15... h5 $5 {to Shamkovich, although
Capablanca himself had mentioned it. Tukmakov's Modern Chess Preparation (2012)
gives} 16. Re2 $1 {as in the game.} ({Rather than} 16. Nd2 $2 Bh2+ $1 17. Kf1
Bd6 $1 18. Kg1 $11) 16... Nf6 $5 {is an interesting try analyzed in Sanchez'
Jose Raul Capablanca (2015):} 17. Re5 $1 ({Not} 17. Qxa8 $2 Bxh3 $1 18. Qf3 ({
Black's attack is too strong after} 18. Qxf8+ Kxf8 19. gxh3 Qxh3 $19) 18... Bg4
19. g3 $8 Bxf3 20. gxh4 Bxe2 $15) 17... Bxe5 18. dxe5 {and now after the long
computer variation} Qe4 $5 ({Sanchez gives} 18... Ne4 19. Bd5 $1 Ng5 20. Qe3
Nxh3+ 21. gxh3 $16) 19. exf6 Qe1+ 20. Kh2 Qxc1 21. fxg7 Kxg7 22. Qxa8 Qf4+ 23.
g3 Qxf2+ 24. Qg2 Qe1 25. Qd2 Re8 26. Qxe1 Rxe1 27. Kg2 Bf5 28. Kf2 Rxb1 29.
Rxb1 Bxb1 30. h4 $18 {despite having miraculously regained material equality,
Black finds himself in a terrible ending.}) 16. Re2 $1 {Again Capablanca
intuitively finds the best move.} (16. Qxf2 {is met with} Bh2+ $1 ({but not} 
16... Bg3 $2 17. Qxf7+ $3 Rxf7 18. Re8#) 17. Kf1 Bg3 {but after} 18. Qd2 $1 ({
Inferior is} 18. Qe2 $2 Bxh3 $1 19. gxh3 Rae8 $36) ({And} 18. Qxf7+ $4 Rxf7+
$19 {is now check! This actually occurred in no fewer than 16 (!) games, the
earliest being 0-1 (18) Te Kolste,J-Loman,R Nijmegen 1921}) 18... Bxh3 $5 19.
gxh3 Qxh3+ 20. Qg2 Qf5+ ({or} 20... Qxg2+ 21. Kxg2 Bxe1 $14) 21. Kg1 Bxe1 22.
Nd2 $14 {the computer likes White's position, although Tukmakov describes it
as "totally unclear".}) (16. Bd2 $5 {has been suggested as an improvement, but
it is less clear than the game after} Bxh3 $1 ({but not} 16... Bg4 $2 17. Qxf2
Bh2+ 18. Kf1 Bg3 {because of} 19. Bg5 $1 $18) 17. gxh3 Nxh3+ 18. Kf1 $8 $13)
16... Bg4 $5 {Forcing White's king toward the center.} (16... Bxh3 17. gxh3
Nxh3+ {now less strong, since White no longer needs to protect his rook and
can play} 18. Kg2 $1 $16 {when Black has insufficient compensation for the
piece.}) ({Kasparov also proposed} 16... Ng4 $5 17. g3 $1 ({Also possible is} 
17. Qxa8 $5 Qg3 18. hxg4 Qh2+ {0-1 (22) Simoni,U-Balletti corr 1969 - and now}
19. Kf2 $1 $16) 17... Qxh3 18. Qxa8 Bxg3 19. Qg2 $16 {but Black is after all
down a rook, and lost the only game from this position - 1-0 (21) Winslow,E 
(2340)-Pustilnik,M Somerset 1986}) 17. hxg4 (17. Qxf2 $2 {is now bad after} Bg3
18. Qf1 Bxe2 19. Qxe2 Rae8 $36) 17... Bh2+ 18. Kf1 Bg3 ({The unusual
alternative} 18... Nh1 $5 {fails to achieve anything after e.g.} 19. Nd2 $18)
19. Rxf2 ({As Capablanca points out, even} 19. Ke1 $5 $16 {was possible.})
19... Qh1+ 20. Ke2 Bxf2 (20... Qxc1 {leads to the same material imbalance as
the game, but with White's counterattack beginning even sooner:} 21. Bxf7+ Kh8
22. Qxg3 Qxb2+ 23. Nd2 Qxa1 24. Rf1 Qb2 25. Qd3 $18 {1-0 (32) Beni,A-Galia,K
Bad Gastein 1948}) 21. Bd2 $1 ({But not} 21. Qxf2 $2 Qxc1 $19 {when White has
no counterattack at all.}) 21... Bh4 22. Qh3 Rae8+ 23. Kd3 Qf1+ 24. Kc2 $16 {
White's king is safe and as soon as he completes development he can begin
converting his material advantage.} Bf2 ({No better is} 24... Qf2 25. Qf3 Re2
26. Qxf2 Rxf2 27. Bd5 $18) 25. Qf3 Qg1 26. Bd5 c5 27. dxc5 Bxc5 28. b4 $1 {
Beginning the process of extricating his rook and knight.} Bd6 ({Capablanca
mentions} 28... Be3 29. Bxe3 Rxe3 30. Nd2 $1 $18 {forcing simplification.}) 29.
a4 $1 {The Ra1 comes to life.} a5 $5 {Marshall continues to try to open lines,
but he will soon be outnumbered.} 30. axb5 axb4 31. Ra6 $1 bxc3 32. Nxc3 $18 {
Despite the lack of pawn shelter, White's king is safe enough, and his passed
b-pawn is mobile and dangerous.} Bb4 33. b6 Bxc3 34. Bxc3 h6 (34... Re3 $2 {
is met with} 35. Qxf7+ $1 $18) 35. b7 Re3 36. Bxf7+ $1 {and Black resigned. A
brilliantly played game by Capablanca, of significant theoretical, analytical,
and historical importance.} ({White forces mate after} 36. Bxf7+ Rxf7 (36...
Kh8 37. Rxh6#) (36... Kh7 37. Qf5+ $19) 37. b8=Q+ Kh7 38. Rxh6+ $1 Kxh6 39.
Qh8+ Kg5 40. Qh5#) 1-0

[Event "Tradewise Gibraltar"]
[Site "Catalan Bay GIB"]
[Date "2011.01.26"]
[Round "2"]
[White "Fabiano Caruana"]
[Black "Viktor Korchnoi"]
[Result "0-1"]
[ECO "C84"]
[WhiteElo "2721"]
[BlackElo "2544"]
[Annotator "Soltis, Andy"]
[PlyCount "92"]
[EventDate "2011.01.25"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 Be7 7. O-O O-O 8. Re1
Nd7 9. Be3 Nb6 10. Bb3 Kh8 11. Nbd2 f5 12. Bxb6 cxb6 13. Bd5 g5 {[#]} 14. h3 g4
15. hxg4 fxg4 16. Nh2 Bg5 17. Nc4 b5 18. Ne3 Bxe3 19. Rxe3 Qf6 20. Qe1 Ne7 21.
f3 Nxd5 22. exd5 Rg8 23. Qg3 gxf3 24. Qxf3 Bf5 25. Rf1 Rg5 26. Kh1 Qh6 27. Rf2
Rag8 28. Re1 Qg6 29. Re3 Bxd3 30. Kg1 e4 31. Qh3 Rxd5 32. Qd7 Rg5 33. g4 Qh6
34. Rf7 R5g7 35. Rxg7 Rxg7 36. Qd8+ Rg8 37. Qb6 Qf6 38. Qxb7 Rf8 39. Qa7 b4 40.
Rh3 Qg7 41. Qe3 bxc3 42. bxc3 Qxc3 43. Rh5 d5 44. g5 Qa1+ 45. Kg2 Bf1+ 46. Kg3
Qe5+ 0-1

[Event "Candidates semi-final"]
[Site "Linares ESP"]
[Date "1992.04.??"]
[Round "6"]
[White "Nigel Short"]
[Black "Anatoly Karpov"]
[Result "1-0"]
[ECO "C86"]
[Annotator "Soltis, Andy"]
[PlyCount "55"]
[EventDate "1992.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Qe2 b5 7. Bb3 O-O 8. c3
d5 9. d3 d4 10. Nbd2 Bc5 11. Bc2 Bb6 12. Nb3 Bg4 13. h3 Bxf3 14. Qxf3 a5 15. a3
a4 16. Nd2 Ba5 17. c4 Bxd2 18. Bxd2 bxc4 19. Rfc1 Qd6 20. Qd1 c3 21. bxc3 dxc3
22. Bxc3 Nd4 23. Ra2 Nxc2 24. Raxc2 {[#]} Rfd8 (24... c5) 25. Bb4 Qxd3 26. Rd2
(26. Qxd3 Rxd3 27. Rxc7) 26... Qxd2 (26... Qb5 27. Rxd8+) 27. Bxd2 Nxe4 28. Rc2
1-0

[Event "Aeroflot Open"]
[Site "Moscow RUS"]
[Date "2016.03.01"]
[Round "1.28"]
[White "Alexander Khalifman"]
[Black "Daniil Yuffa"]
[Result "1/2-1/2"]
[ECO "E97"]
[WhiteElo "2624"]
[BlackElo "2502"]
[Annotator "Soltis, Andy"]
[PlyCount "85"]
[EventDate "2016.03.01"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. O-O Nc6 8. d5
Ne7 9. b4 Nh5 10. g3 f5 11. Ng5 Nf6 12. Bf3 c6 13. Be3 h6 14. Ne6 Bxe6 15. dxe6
fxe4 16. Nxe4 Nxe4 17. Bxe4 d5 18. cxd5 cxd5 19. Bg2 b6 20. Qb3 Qd6 21. Rad1
Rad8 22. Bxd5 Nxd5 23. e7 Qxe7 24. Rxd5 Rxd5 25. Qxd5+ Qf7 26. Rd1 Qxd5 27.
Rxd5 Rf7 28. Rd8+ Kh7 29. a4 Bf6 30. Re8 Kg7 31. a5 Bg5 32. Bxg5 hxg5 33. axb6
axb6 34. Rxe5 Kh6 35. Re6 b5 36. Re5 Rb7 37. h3 Rb8 38. Kf1 Rb7 39. Ke2 Rb8 40.
Ke3 Rb7 41. g4 {[#]} Rc7 (41... Rf7 42. Rxb5 Rb7) 42. Rxb5 (42. Kd3 Rd7+ 43.
Kc3 Rc7+ 44. Rc5 Rb7 45. Kd4) 42... Rb7 (42... Rc3+ 43. Kd4 Rxh3 44. Rb8) 43.
Rxb7 (43. Re5 Rxb4) 1/2-1/2

[Event "GRENKE Chess Classic"]
[Site "Karlsruhe GER"]
[Date "2018.04.09"]
[Round "9"]
[White "Nikita Vitiugov"]
[Black "Fabiano Caruana"]
[Result "0-1"]
[ECO "C43"]
[Annotator "Soltis, Andy"]
[PlyCount "80"]
[EventDate "2018.03.31"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d5 5. Nbd2 Qd7 {[#]} 6. Bd3 (6. Nxe4
dxe4 7. Qxd7+ Nxd7) 6... Nc5 7. Be2 g6 8. Nb3 Ne6 9. Be3 c5 10. Ng5 b6 11. Nxe6
fxe6 12. a4 Bb7 13. O-O Nc6 14. f4 Bh6 15. a5 Ne7 16. Bg4 d4 17. Bc1 O-O 18.
Qd3 Bd5 19. Qh3 Bg7 20. Nd2 Nf5 21. c4 dxc3 22. bxc3 Rad8 23. axb6 axb6 24. Re1
b5 25. Ne4 Qe7 26. Ng5 h6 27. Nf3 Bc6 28. Bxf5 gxf5 29. Be3 Rd3 30. Rac1 Ra8
31. Qh4 Qxh4 32. Nxh4 c4 33. Kf2 Bf8 34. Nf3 Bd5 35. Nd4 Bc5 36. Nxf5 Ba3 37.
Nxh6+ Kg7 38. f5 Bxc1 39. Bxc1 Rxc3 40. f6+ Kg6 0-1

[Event "Moscow-ch"]
[Site "Moscow URS"]
[Date "1942.??.??"]
[Round "?"]
[White "Isaac Boleslavsky"]
[Black "Viacheslav Ragozin"]
[Result "1-0"]
[ECO "C82"]
[Annotator "Soltis, Andy"]
[PlyCount "75"]
[EventDate "1942.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. c3 Bc5 10. Nbd2 O-O 11. Bc2 f5 12. Nb3 Ba7 13. Nbd4 Nxd4 14. Nxd4 Bxd4
15. cxd4 f4 16. f3 Ng3 17. hxg3 fxg3 18. Qd3 Bf5 19. Qxf5 Rxf5 20. Bxf5 Qh4 21.
Bh3 Qxd4+ 22. Kh1 Qxe5 23. Bd2 c5 24. Rae1 Qxb2 25. Bf4 Qf6 26. Bxg3 d4 27. Re6
Qg5 28. Kh2 c4 29. f4 Qh5 30. f5 d3 31. f6 gxf6 32. Rf5 Qg6 33. Rexf6 Qg7 34.
Bf4 c3 35. Rg5 Rd8 36. Be6+ Kh8 {[#]} 37. Be5 Qxg5 (37... d2 38. Rf8+ Rxf8 39.
Bxg7#) 38. Rf8# 1-0

[Event "USSR Championship"]
[Site "Moscow URS"]
[Date "1940.09.24"]
[Round "14"]
[White "Isaac Boleslavsky"]
[Black "Vladimir Andreevich Makogonov"]
[Result "1-0"]
[ECO "B11"]
[Annotator "Soltis, Andy"]
[PlyCount "75"]
[EventDate "1940.??.??"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. d4 Nf6 7. Bd3 dxe4 8.
Nxe4 Qxd4 9. Be3 Bb4+ 10. Ke2 Qd8 11. Rhd1 Nxe4 12. Bxe4 Qe7 13. Kf1 O-O 14.
Qg3 Na6 15. c3 Ba5 16. Bd3 Nc7 17. Bd4 f6 18. Qh4 g6 19. Be3 Bb6 20. Bh6 Rfd8
21. Qg3 Kh8 22. h4 Rd7 23. Bc2 Rad8 24. Rxd7 Rxd7 25. Re1 Qc5 26. Qf4 Qe7 27.
Bb3 Rd8 28. Qe4 e5 29. Qf3 Nb5 30. g3 Nd6 31. Bc1 Kg7 32. Kg2 Qd7 33. g4 Re8
34. h5 gxh5 {[#]} 35. Bh6+ Kg6 (35... Kxh6 36. Qxf6#) (35... Kh8 36. Qxf6+) 36.
gxh5+ Kxh6 37. Qxf6+ Kxh5 38. Rh1+ 1-0

[Event "USSR Championship"]
[Site "Leningrad URS"]
[Date "1947.02.18"]
[Round "10"]
[White "Isaac Boleslavsky"]
[Black "Boris Petrovich Goldenov"]
[Result "1-0"]
[ECO "C99"]
[Annotator "Soltis, Andy"]
[PlyCount "73"]
[EventDate "1947.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. h3 cxd4 13. cxd4 Nc6 14. Nb3 a5 15.
Be3 a4 16. Nbd2 Nb4 17. Bb1 Bd7 18. a3 Nc6 19. Bd3 Qb8 20. b4 axb3 21. Qxb3
exd4 22. Nxd4 Nxd4 23. Bxd4 Ne8 24. e5 dxe5 25. Bxe5 Bd6 26. Nf3 Ra4 27. Bb2
Rf4 28. Ne5 Qa7 29. Re2 Be6 30. Qc2 Nf6 31. Bxb5 Rc8 32. Qd2 Bxe5 33. Rxe5 Re4
{[#]} 34. Rg5 Qe7 (34... Ne8 35. Bxe8) 35. Rxg7+ Kxg7 36. Qg5+ Kf8 37. Bxf6 1-0

[Event "Ukraine Ch"]
[Site "USSR"]
[Date "1938.??.??"]
[Round "?"]
[White "Polyak"]
[Black "Isaac Boleslavsky"]
[Result "0-1"]
[ECO "C08"]
[Annotator "Soltis, Andy"]
[PlyCount "46"]
[EventDate "1938.??.??"]

1. d4 e6 2. e4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Qe2+ Be7 7. dxc5 Nf6 8.
Ngf3 O-O 9. O-O Bxc5 10. Nb3 Bb6 11. Bf4 a6 12. Bd3 Re8 13. Qd1 Bg4 14. c3 Ne4
15. h3 Bh5 16. Be2 Qf6 17. Bh2 Rad8 18. Qc2 Re7 19. Rad1 Rde8 20. Nc1 {[#]}
Bxf3 21. Bxf3 Nxf2 22. Rxd5 (22. Rxf2 Re1+) 22... Ng4+ (22... Nxh3+ 23. Kh1 Re1
) 23. Kh1 Ne3 0-1

[Event "Saltsjöbaden Interzonal"]
[Site "Stockholm SWE"]
[Date "1948.07.29"]
[Round "9"]
[White "Isaac Boleslavsky"]
[Black "Lajos Steiner"]
[Result "1-0"]
[ECO "B84"]
[Annotator "Soltis, Andy"]
[PlyCount "63"]
[EventDate "1948.07.16"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e6 7. O-O a6 8. Be3
Qc7 9. f4 Na5 10. Kh1 Be7 11. Qe1 Nc4 12. Bc1 b5 13. b3 Nb6 14. Bf3 Bb7 15. a3
Nbd7 16. Bb2 Nc5 17. b4 Ncd7 18. e5 dxe5 19. fxe5 Ng8 20. Qg3 Bf8 21. Rae1 Nh6
22. Bxb7 Qxb7 23. Bc1 g6 24. Bxh6 Bxh6 25. Qh3 Bg5 26. Ne4 Be7 {[#]} 27. Rxf7
Qd5 (27... Kxf7 28. Qxe6+ Kf8 29. Rf1+) 28. Rxe7+ Kxe7 29. Qh4+ Kf7 30. Nd6+
Kg7 31. Qe7+ Kh6 32. Re3 1-0

[Event "USSR Championship"]
[Site "Moscow URS"]
[Date "1952.11.30"]
[Round "2"]
[White "Isaac Boleslavsky"]
[Black "Vasily Smyslov"]
[Result "1-0"]
[ECO "D18"]
[Annotator "Soltis, Andy"]
[PlyCount "83"]
[EventDate "1952.??.??"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O
a5 9. Qe2 Ne4 10. Na2 Bd6 11. Bd3 Bg6 12. Nc3 Nxc3 13. bxc3 Nd7 14. e4 O-O 15.
Rb1 Rb8 16. Nd2 Bc7 17. f4 f5 18. e5 Nb6 19. Ra1 Nd5 20. Bb2 Qh4 21. g3 Qh6 22.
Nc4 Bh5 23. Qd2 Rfd8 24. Rf2 b6 25. Na3 Be8 26. c4 Nb4 27. Bf1 c5 28. Nb5 Bxb5
29. axb5 cxd4 30. Bxd4 g5 31. Qe3 gxf4 32. gxf4 Kh8 33. Kh1 Rd7 34. Bc3 Bd8 35.
Rg2 Qh5 36. Be2 Qh6 37. Rag1 Bc7 38. Rg5 Nc2 39. Qg3 Qf8 {[#]} 40. Bd3 Nd4 41.
Bxd4 Rxd4 42. Rg7 1-0

[Event "NM Open"]
[Site "?"]
[Date "2018.11.11"]
[Round "5"]
[White "Montes, Felipe"]
[Black "Tohen, Marcelo"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1167"]
[BlackElo "879"]
[Annotator "Alburt, Lev"]
[PlyCount "98"]
[EventDate "2018.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Nc3 d6 6. Bg5 h6 7. Bxf6 Qxf6 8.
Nd5 Qd8 9. Qe2 (9. c3) 9... Bg4 (9... Ne7) 10. Bb5 (10. c3) 10... Rb8 {Diagram
[#]} 11. h3 Bd7 12. Bxc6 bxc6 13. Nc3 Rxb2 {Diagram [#]} 14. O-O (14. Na4 Rb5)
14... g5 (14... Rb8) 15. Na4 Rb5 16. c4 Ra5 17. Nxc5 Rxc5 {Diagram [#]} 18. Qb2
(18. Qd2 g4) 18... g4 19. hxg4 Bxg4 {Diagram [#]} 20. Nh2 (20. Nxe5 dxe5 (20...
Rxe5 21. f4) 21. Qb4 Bf3 22. gxf3 (22. Qxc5 Qg5 23. g3 Qh5)) 20... h5 (20...
Rg8) 21. Rab1 Kd7 (21... Bf3) 22. f3 (22. f4 exf4 23. Rxf4) 22... Be6 23. f4
exf4 24. Rxf4 h4 25. Nf3 (25. Ng4) 25... h3 {Diagram [#]} 26. g4 (26. g3) 26...
Rg8 27. e5 (27. Nh2 Qh4) 27... Bxg4 28. Rxf7+ Ke8 {Diagram [#]} 29. e6 Bxe6+
30. Kf1 Kxf7 31. Qf2 Rg2 32. Ne5+ Ke8 {Diagram [#]} 33. Qf3 dxe5 34. Qh5+ Kd7
35. Qh7+ Qe7 36. Qxe7+ Kxe7 37. Rb7 Kd6 38. Rb8 Rg8 39. Rb2 e4 40. dxe4 Bxc4+
41. Ke1 Rh5 42. Rd2+ Ke5 43. Rd7 h2 44. Re7+ Kd6 45. Rxc7 h1=Q+ 46. Kd2 Rg2+
47. Kc3 Kxc7 48. a4 Qc1+ 49. Kd4 c5# 0-1

[Event "Bay Area Int Open 2019"]
[Site "Burlingame USA"]
[Date "2019.01.03"]
[Round "3.8"]
[White "Yoo, Christopher Woojin"]
[Black "Le Quang Liem"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2388"]
[BlackElo "2714"]
[Annotator "Hess, Robert"]
[PlyCount "95"]
[EventDate "2019.01.01"]

{Christopher Yoo is a phenom. At the 2019 Bay Area International, the pre-teen
became the youngest player in US Chess history to earn the title of
international master. In round 3 he broke Rameshbabu Praggnanandhaa's record
as the youngest person to defeat a player rated over 2700; his win over Le
Quang Liem was historic. He demonstrated tremendous poise to sacrifice
material in an unfavorable position and then convert his advantage when his
esteemed opponent slipped up.} 1. e4 c6 2. d4 d5 3. exd5 {The exchange
Caro-Kann is a safe opening choice. White's plan tends to be quite
straightforward (develop and control the center!), whereas there hardly are
ways for Black to obtain tactical counterplay. This was a smart practical
decision against a more-experienced opponent with a significantly higher
rating; the onus was put on him to prove he could outplay the youngster.} cxd5
4. Nf3 Nc6 5. Bb5 e6 6. c4 dxc4 7. O-O Bd6 8. Nc3 Nge7 {[#] This novelty makes
perfect sense. The knight on e7 is well placed since it is not as vulnerable
to a pin.} 9. Bg5 O-O 10. Bxc4 ({Sometimes it is important to seize the
momentum and temporarily ignore the material count - like in a Catalan. Here,
however, centralizing with} 10. Ne4 {is slow, since Black will fight to keep
the extra pawn.} h6 (10... f6 {must be considered, but loosening the e6 square
is not ideal.}) 11. Bh4 Na5 {White is far from launching an attack and Black
is just a few moves (a6-b5-Bb7) from completing development.}) 10... b6 ({
Immediately challenging the bishop deserved serious attention:} 10... h6 11.
Bh4 (11. Be3 {is not the ideal retreat, since Black can continue with his
development and an eventual Nf5 will be irksome. White can hardly hope for an
advantage.}) 11... Qb6 {Importantly, if the knight was on f6 the queen would
be tied down to its defense. Now it escapes the pin and puts pressure on the
queenside.}) 11. a3 Bb7 12. Re1 Rc8 {Sometimes the most innocuous moves can
cause us the greatest problems. What possible drawback could developing the
rook to an open file have?} 13. Ba2 {Reacting to Black's last move. Instead,
White should have gone for a timely break where the 'obvious' replies get
Black into trouble.} (13. d5 Na5 14. Bd3 $1 (14. Ba2 exd5 15. Nxd5 Bxd5 16.
Bxd5 h6 17. Bxe7 Bxe7 18. Qd3 {is a position where White is playing for two
results. Black must be careful to avoid being much worse in just a few moves.})
14... exd5 ({If sacrificing an exchange here is the best option, then it's
clear that this was not Le's intention. However, Black obtains sufficient
compensation for the material and it's an interesting dynamic in the event of} 
14... Rxc3 $1 15. bxc3 Bxd5) (14... f6 {would be a satisfactory reply if not
for} 15. Nd4 fxg5 16. Nxe6 Qe8 17. Ne4) 15. Nb5 Nac6 16. Nfd4 Qd7 17. Nxc6 Nxc6
18. Qf3 {and Black is losing material. For instance:} Ne5 (18... g6 19. Qf6
Rfd8 20. Nxd6 Qxd6 21. Re8+ $1) 19. Qf5 Qxf5 20. Bxf5) 13... h6 14. Bh4 Qd7 {
[#]} 15. d5 {Essentially an admission that the opening didn't feel like a
success. Unless this advance initiates favorable tactics or immediate pressure,
the resulting exchanges lead to equality. It's one of those moments in chess
that reminds you it is essential to play the board and not the opponent.} (15.
Qd3 {was in the spirit of the position, connecting the rooks and eyeing the h7
square. If Black tries to solve problems with activity, White can respond
tactically.} Nf5 (15... Rfe8 16. Bg3 Ng6 17. d5 Bxg3 18. hxg3 exd5 (18... Nce7
19. Qb5 $1) 19. Nxd5 {with a pleasant edge for White.}) 16. d5 Nxh4 17. Nxh4
Ne7 18. Qb5 $1 ({Also good is the straightforward} 18. Bb1 f5 19. dxe6) 18...
Qc7 19. dxe6 Bxh2+ 20. Kh1 {sees White crashing through.} f5 21. Qd7 Bc6 22.
Ng6 $3 {is too much for Black to handle.}) 15... exd5 16. Nxd5 Nxd5 17. Bxd5
Rfe8 18. Rxe8+ Rxe8 19. Kh1 $2 {Truthfully, it is hard to understand this move.
Without a distinct plan, Christopher resorts to placing his king in the corner,
which eliminates any discoveries with Bxh2+. Considering White's 15th move, he
should have been content to maintain the equality with 19. Ba2.} ({The desired
move} 19. Qd2 {runs right into} Bf4 $1 {Black's pieces are better coordinated
after} 20. Qxf4 Qxd5 {when Black has numerous threats including Re2, Re4, Ne5,
and g5.}) (19. Ba2) 19... g5 $1 {[#]} 20. Bxg5 $1 {A sign of a strong player
is the ability to realize when things are spiraling out of control. Le was
objectively correct to welcome the sacrifice and Christopher was practically
correct to pick up the gauntlet.} ({An uncomfortable ending ensues after} 20.
Bg3 Bxg3 21. hxg3 ({Rarely does one voluntarily take away from the center, but
without a pawn hanging on f2 in certain variations, White should consider the
recapture} 21. fxg3 {Black clearly remains for choice, but} Rd8 22. Bb3 g4 23.
Nh4 Na5 24. Nf5 Nxb3) 21... Rd8 22. Bb3 Qf5 23. Qc2 (23. Qe2 Nd4 {is
overpowering, since the knight is immune to capture lest the diagonal open up
and Black uncork the beautiful Qh3+ followed by mate on g2.}) 23... Qxc2 24.
Bxc2 g4 {when White more or less resorts to wishful thinking that Black is not
in time to crash through. There is nothing appealing when visualizing this
position, so it's hardly surprising that Christopher avoided it.}) 20... hxg5
21. Nxg5 Nd8 22. Bxb7 Nxb7 23. Qd3 {Possible because the king is on h1!} Kf8 {
Since the kingside is barren, it was time to run from the impending attack. Or
was it?} (23... f5 $1 {was absolutely necessary here to retain the advantage.
The two pawns do not fully compensate for the bishop, so White's chances are
entirely tied to a potential attack.} 24. f4 Nc5 25. Qc4+ (25. Qd5+ Kg7 26. Rd1
Ne4 {takes advantage of back rank checkmates.}) 25... Kg7 26. Qc3+ Kg6 27. Qg3
{looks menacing, but the calm response} Bf8 {demonstrates that this two-piece
attack is insufficient.}) 24. Qd4 Re5 {[#]} ({Apparently there were some
absurd computer lines that of course led to equality.} 24... Ke7 25. Nh7 Qf5
26. Qh4+ Ke6 27. Re1+ Kd5 28. Rc1 (28. Nf6+ $2 Qxf6 {wins on the spot, since
the king has no luft.}) 28... Rc8 ({It might be time to shake hands with} 28...
Ke6) 29. Nf6+ Qxf6 30. Qh5+ Be5 31. Qd1+ Ke6 32. Qg4+ {White gets a rook and
two pawns for the minors, but Black's king finds safety. It's anyone's game!})
25. f4 ({The forceful} 25. Nh7+ $1 {was crushing.} Ke7 (25... Kg7 26. f4 {
wins not just the rook but also the bishop, since it is pinned after} Kxh7 27.
fxe5) 26. Qh4+ Ke6 27. f4 Rf5 28. Re1+ Kd5 29. Nf6+ Rxf6 30. Qxf6 {If the
material edge of rook and two pawns against two minor pieces wasn't enough,
the blistering attack does the trick. Black is lost.}) 25... Qg4 $1 {A
brilliant concept, defending by attacking.} 26. Rd1 ({Christopher properly
concludes that the following variation is better for his opponent:} 26. h3 Qg3
27. fxe5 Bxe5 28. Qb4+ Bd6 29. Nh7+ Kg7 30. Qc3+ Qxc3 31. bxc3 Kxh7) 26... Re2
{Running into a forced line that leaves White in a better ending.} ({It's hard
to vacate the e-file when an attack is impending, but protecting the f6 square
was vital.} 26... Rf5 27. Qh8+ Ke7 28. Re1+ Kd7 29. Qe8+ Kc7 30. Rc1+ Rc5 31.
Qxf7+ {White snags a third pawn for the sacrificed bishop, but Black finally
finds some shelter and is to be preferred with the queens on the board.}) 27.
Nh7+ Ke7 28. Qf6+ Kd7 29. Qxd6+ $1 Nxd6 30. Nf6+ Ke6 31. Nxg4 Rxb2 {The dust
has settled and White is up a pawn, while Black has superior pieces. This
activity offsets the material deficit; the position is equal.} 32. Ne3 Re2 33.
Nd5 Nc4 34. h4 Kf5 35. h5 Re6 ({Swapping the knights makes Black's task easier.
} 35... Ne3 36. Nxe3+ Rxe3 {Both a3 and f4 are en prise, and the flurry of
trades leads to an immediate draw:} 37. Rd7 Kxf4 38. Rxf7+ Kg5 39. Rxa7 Kxh5)
36. Rc1 Nd6 37. Kg1 Kg4 38. Rc7 a5 39. Rc6 {[#]} b5 $2 {The final straw, a
blunder nearing the time control.} (39... Kg3 {was needed to draw the White
king into harm's way.} 40. Kf1 b5 41. Nc7 Rf6 {now works out, since 42. Nxb5?
is met by Rxf4+.} 42. Nxb5 Rxf4+) 40. Nc7 Re7 ({Worthy of a Naroditsky column
is the fascinating knight endgame that ensues after:} 40... Rf6 41. Nxb5 Ne4
42. Rxf6 Nxf6 43. h6 Kxf4 44. Nd6 a4 45. Nxf7 Kf5 46. Nd6+ Kg6 47. Kf2 {
Because the pawn is on g2 - and far away from the Black king - it should be
winning for White, who will head to the queenside and pick off the a-pawn.})
41. h6 Nf5 42. h7 Re1+ 43. Kf2 Rh1 44. Nd5 {The pawn on h7 is defended via the
check on f6. Black can't stop Rc8 and the pawn promoting without losing
material.} Ng3 45. Rc8 Ne4+ 46. Ke3 Rxh7 47. Kxe4 Rh6 48. Ne3+ 1-0

[Event "Marshall Sunday G45"]
[Site "?"]
[Date "2017.08.31"]
[Round "?"]
[White "IM Jay Bonin"]
[Black "Benjamin Medina"]
[Result "*"]
[ECO "D60"]
[WhiteElo "2369"]
[BlackElo "2037"]
[Annotator "Hartmann, John"]
[PlyCount "33"]
[EventDate "2017.??.??"]
[SourceDate "2019.02.11"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Qb3 e6 5. Bg5 Be7 6. Nc3 O-O 7. e3 Nbd7 8. Rd1
{[#]} Qb6 (8... dxc4 9. Bxc4 Nd5) (8... Ne4 9. Bxe7 Qxe7 10. Bd3 Nxc3 11. Qxc3
dxc4 12. Bxc4 (12. Qxc4 e5) 12... b6) (8... b6 9. Bd3 Bb7 10. O-O c5) (8... a6
9. Bd3 dxc4 (9... b5 10. cxd5 cxd5) 10. Bxc4 (10. Qxc4 b5 11. Qxc6 Ra7) 10...
b5) 9. Qc2 dxc4 10. Bxc4 Re8 11. O-O c5 12. d5 exd5 13. Bxd5 Qc7 14. Bf4 Qa5
15. Bxf7+ Kxf7 16. Ng5+ Kg8 17. Qb3+ *

[Event "2017 North American Youth Championship"]
[Site "?"]
[Date "2017.??.??"]
[Round "?"]
[White "FM Tan Nguyen"]
[Black "FM Shawn Rodriguez-Lemieux"]
[Result "0-1"]
[ECO "E17"]
[WhiteElo "2216"]
[BlackElo "2057"]
[Annotator "Hartmann, John"]
[PlyCount "34"]
[EventDate "2017.??.??"]
[SourceDate "2019.02.11"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Nbd2 b6 8. b3
Bb7 9. Bb2 c5 10. cxd5 exd5 11. Rc1 Rc8 12. Nh4 (12. e3) 12... Re8 13. Nf5 Bf8
14. Nc4 Ba6 {[#]} 15. Nce3 (15. Ncd6) (15. Ne5) 15... g6 16. Nh4 Bg7 (16... Bh6
) 17. Re1 Bh6 0-1

[Event "http://www.chessbomb.com"]
[Site "http://www.chessbomb.com"]
[Date "????.??.??"]
[Round "5"]
[White "Thedorou, Nikolaos"]
[Black "Cori, Jorge"]
[Result "0-1"]
[ECO "D78"]
[Annotator "Lawrence, Al"]
[PlyCount "94"]
[WhiteClock "0:06:15"]
[BlackClock "0:12:22"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. Qb3 dxc4 8. Qxc4
a5 9. Nbd2 Be6 10. Qc2 Na6 11. e4 Nb4 12. Qb1 a4 13. a3 Na6 14. Re1 Qb6 15. Qc2
Rfd8 16. Ng5 Nc7 17. Nc4 Qb3 18. Qxb3 axb3 {[#]} 19. Nd2 (19. d5 {Stockfish 9
64 BMI2-6 threads:} cxd5 20. Nxe6 Nxe6 21. Nb6 Ra6 22. Nxd5 Nd4 (22... Ng4 23.
Nxe7+ Kf8 24. Nd5 Rc6) 23. Rb1 e6 24. Bg5 exd5 25. e5 Rc8 26. Bxf6 Bxf6 27.
exf6 Rxf6 28. f4 Rb6 29. Bxd5 Rc2 30. Red1 Ne6 31. Rd3 Nc5 32. Re3 Rd2 33. Bc4
Rc2 {[%eval 0,23]}) 19... Rxd4 20. Nxe6 Nxe6 21. Nxb3 Rd3 22. Nd2 Nd4 23. Rb1
Ng4 24. h3 Ne5 25. Kh1 Rd8 26. f4 Ndf3 27. Nxf3 Nxf3 28. Rf1 Nd4 29. Kh2 Ne2
30. Rf3 Rxf3 31. Bxf3 Nxc1 32. Rxc1 Rd2+ 33. Kh1 Bxb2 34. Rb1 c5 35. Rd1 Rf2
36. Rd8+ Kg7 37. Bd1 Bxa3 38. Ba4 h5 39. h4 Rb2 40. Rd3 Bb4 41. Rd7 Bc3 42. Rc7
b5 43. Rxc5 bxa4 44. Rxc3 Rb3 45. Rc4 Rxg3 46. Rxa4 Rg4 47. e5 e6 0-1

[Event "Pan-American Intercollegiate Team 2018"]
[Site "?"]
[Date "2018.12.28"]
[Round "3"]
[White "Nyzhnyk, Illia"]
[Black "Nakar, Eylon"]
[Result "1-0"]
[ECO "D55"]
[WhiteElo "2624"]
[BlackElo "2452"]
[Annotator "Nyzhnyk, Illia"]
[PlyCount "57"]
[EventDate "2018.??.??"]

{This was my second game of the day. Therefore, having a very limited time to
prepare, I decided to go for a rather rare line in Queen's Gambit Declined
variation.} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Qc2 $5 {Although this
is quite a common square for white queen in QGD, white does not usually place
it there right away. The idea of developing the queen first is to prepare long
castle after Bg5.} O-O {My opponent spent nearly 30 minutes on this
obvious-looking move which is one of the main responses for black. However, it
completely ignores white's idea, and so black has to exercise extreme caution
in some of the positions in the future.} (5... c5 $5 {Intends to fight against
white's idea right away. However, by playing this move black shows an
intention to play the following position} 6. dxc5 d4 7. Nb5 e5 8. Nxe5 a6 9.
Na3 O-O 10. Nd3 {where black is down material for a long-term compensation.
According to various engines, this position is slightly more preferred for
black. Nevertheless, I would still much rather take white, as I believe that
without deep knowledge black has a higher chance to fail in obtaining full
compensation for the given material.} Bf5 11. g3 Nbd7 12. Bg2 Nxc5 13. O-O Rc8
14. Qd1 Re8 15. Bf4 Qb6 16. Rb1 Nfe4 17. Be5 Bf6 18. Bxf6 Qxf6 19. Nf4 Qe5 20.
Rc1 Rcd8 21. Nc2 a5 22. Nd5 b5 23. Qxd4 bxc4 24. Qxe5 Rxe5 25. Nce3 Rexd5 26.
Nxd5 Rxd5 27. Rxc4 Re5 28. Rfc1 Nd7 29. g4 Nd6 30. Rc6 Bxg4 31. Rxd6 Rxe2 32.
h3 Be6 33. Rc8+ Nf8 34. Rb8 {1-0 (34) Shimanov,A (2606)-Tregubov,P (2595)
Konya 2012}) 6. Bg5 b6 {Although I played this variation quite a few times
before, this move has never occured in any of those games. Thankfully, I did
not have to spend too much time thinking about the way to finish development,
because just like in the majority of QGD positions white has it pretty
straightforward.} (6... h6 {was what most of my opponents played, but most of
them could not solve issues posed by this line. Nonetheless, black's position
should still be OK with some precise play.} 7. Bxf6 Bxf6 8. O-O-O Nc6 9. e3 b6
10. h4 Bb7 11. a3 Na5 12. cxd5 Bxd5 13. Nxd5 exd5 14. g4 c5 15. g5 cxd4 16. Kb1
Rc8 17. Qf5 Be7 18. Ne5 Qd6 19. Nxf7 Qc6 20. Bd3 Bxg5 21. hxg5 Rxf7 22. Qh7+
Kf8 23. g6 Rf6 24. Qh8+ Ke7 25. Qxg7+ Ke6 26. exd4 {1-0 (26) Nyzhnyk,I (2622)
-Bryant,J (2439) Las Vegas 2016}) 7. cxd5 {I also could have postponed taking
by playing 7.e3} exd5 (7... Nxd5 {was another option, but in case black would
have to dead with the weak pawn on c7} 8. Nxd5 exd5 9. Bxe7 Qxe7 10. Rc1 Nd7
11. e3 c5 {where Stockfish claims black is doing fine, but I would still much
rather take white, as I have a very clear plan of playing against black's
central pawns}) 8. e3 Be6 $6 {I believe this is not a very good square to have
your bishop on after playing b6. In the future, it will become clear that the
weakness of white squares on queenside is what will cost black the game.} (8...
h6 9. Bh4 Bb7 $14 {[%cal Gc7c5] Would lead to a typical position where white
is slightly better.}) 9. Rd1 h6 10. Bh4 Nbd7 11. Bb5 $6 {I made this move
extremely fast relying on my first instinct way too much. It appears that
after this move black has a way to finish development.} (11. Ba6 $5 {[%csl Gb7,
Gc8] was much better, taking control over the important b7 and c8 squares.})
11... c5 12. O-O {[#]} a6 $1 {Suddenly, I realized that although my position
looks great I cannot make an immediate use of any of my pieces, which gives
black just enough time to finish developing his pieces.} 13. Bc6 Ra7 14. Qa4 $6
{A simple blunder. For some reason, I thought that 14...c4 is not possible
here. However..} (14. dxc5 {When I was calculating this position before a6
even happened, I thought that I am going to win material, but I was wrong.}
bxc5 15. Rfe1 (15. Bxd5 $4 Nxd5 16. Nxd5 Bxh4 $19) (15. Nxd5 $2 Nxd5 16. Bxd5
Bxh4 17. Bxe6 fxe6 $17 {[%csl Ya7][%cal Gd1d7] And the d7 knight is well
defended.}) 15... Rc7 16. Bxd5 Bxd5 17. Bxf6 Nxf6 18. e4 Bxe4 19. Rxe4 Rd7 20.
Ra4 $14 {My position would be slightly better, but not as much better as I
expected. For this reason, I decided to look for better alternatives.}) 14...
Qc7 $6 (14... c4 $1 15. Bxd7 {is probably the best I can do here.} (15. Nb5 $6
Ra8 $3 {The key move, probably missed by both me and my opponent. The rook is
invulnerable, so the best white can do is to retrieve the knight back to c3.}
16. Nc3 (16. Bxa8 $2 axb5 17. Qxb5 Qxa8 $19) 16... b5 17. Qc2 Rc8 $15) 15...
Bxd7 16. Qc2 Bg4 $17) 15. Bxd7 Bxd7 $2 {Mistake in time pressure. I would no
longer have anything had black taken on d7 with the queen.} (15... Qxd7 16.
Qxd7 Rxd7 17. Ne5 Rc7 $1 $11) 16. Qc2 {[%csl Rd5]} Be6 17. dxc5 Qxc5 18. Nd4 {
In this position my opponent only had about 5 minutes left. Getting no
additional time after 40 moves, I believe that this position cannot be held.}
Rc8 19. Qb1 b5 20. Rc1 Qb6 $4 {[#] Final blundar in the time pressure. The
game is now over.} 21. Bxf6 Bxf6 22. Nxd5 Rxc1 23. Nxf6+ gxf6 24. Rxc1 Qd6 25.
a3 Qd5 26. b4 Rd7 27. Rc5 Qa2 28. Qxa2 Bxa2 29. Rc6 1-0

[Event "Pan-American Intercollegiate Team 2018"]
[Site "?"]
[Date "2018.12.30"]
[Round "3"]
[White "GM Razvan Preotu"]
[Black "IM Matyas Marek"]
[Result "1-0"]
[ECO "B67"]
[WhiteElo "2589"]
[BlackElo "2435"]
[Annotator "Preotu, Razvan"]
[PlyCount "71"]
[EventDate "2018.??.??"]
[SourceDate "2019.02.05"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8.
O-O-O Bd7 9. f4 b5 10. Bxf6 gxf6 11. f5 Qb6 12. Nxc6 Bxc6 13. Kb1 b4 14. Ne2 e5
15. Ng3 Qc5 16. Bd3 h5 17. h4 Bh6 18. Qe2 Qe3 19. Rh3 Ke7 20. Qf1 Qf4 21. Qe1
a5 22. Nxh5 Qg4 23. Ng3 Rhb8 24. Be2 Qg8 25. Bc4 a4 26. Qe2 b3 27. cxb3 axb3
28. axb3 Rb6 29. Nh5 {[#]} Ra5 (29... Qb8 30. g4 Qb7 31. Nxf6 Kxf6 32. g5+ Ke7
33. f6+ Ke8 34. gxh6 Bxe4+ 35. Bd3) 30. Nxf6 Kxf6 (30... Qa8 31. Nd5+ Bxd5 32.
Bxd5) 31. Rxd6+ Ke7 32. Rxh6 Qa8 (32... Bxe4+ 33. Qxe4 Rxh6) 33. Rd3 Ra1+ (
33... Bxe4 34. Rxb6 Ra1+ 35. Kc2 Qa2 36. f6+) 34. Kc2 Bxe4 35. Rxb6 Qa2 36. f6+
1-0

[Event "2018 Pan-Ams"]
[Site "?"]
[Date "2018.12.30"]
[Round "6"]
[White "Rambaldi, Francesco"]
[Black "Yang, Darwin"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2599"]
[BlackElo "2575"]
[Annotator "Yang, Darwin"]
[SetUp "1"]
[FEN "2r1r1k1/p4p2/3b1n1p/4q1p1/1p1pP1P1/3B3P/P2B1PQ1/2RR2K1 w - - 0 33"]
[PlyCount "34"]
[EventDate "2018.??.??"]

33. h4 {A tense position, especially in mutual time trouble. However, Black's
extra pawn and White's weaknesses gives Black the advantage. Personally
speaking, I knew that drawing this game would mean winning the match but had
no idea about any larger implications.} Kg7 $6 {A "natural" move to tread
water in time trouble, but...} (33... Rc3 $19 {would have been a strong move,
constricting White's position and taking dominant control of the dark squares.}
) 34. Rxc8 Rxc8 35. Rf1 {White's plan is to play f4, which appears quite
dangerous, especially for someone low on time.} (35. f4 {is a more forcing way
to achieve the game result.} gxf4 36. Rf1) 35... Rc3 $5 {An exclamation for
the practicality of the move in the situation, but... a question mark for the
objective evaluation!} (35... Qa5 $1 {was the cold-blooded solution. Black's
king is not actually in that much danger; even giving up the g5 pawn is not
too bad, if Black's queen simply returns to e6.} 36. Qf3 Nd7 {[%cal Rd7e5]
After Black's knight comes to e5, White's position begins to fall apart.} 37.
e5 Qxe5) 36. f4 gxf4 37. Bxf4 Qxf4 38. Rxf4 Bxf4 {[#] Black has a powerful
rook and pawns along with a firm grip on the dark squares. However, White has
enough resources to save the draw.} 39. e5 (39. Qe2 $2 Nd7 $19) 39... Rxd3 40.
exf6+ Kxf6 41. Qe4 Be3+ 42. Kg2 Rd2+ 43. Kf3 Rf2+ 44. Kg3 Rxa2 {Too many
queenside pawns, and even without them Black has a fortress. White has no
choice but to accept the perpetual.} 45. Qf5+ Kg7 46. Qe5+ Kg8 47. Qe8+ Kg7 48.
Qe5+ Kg8 49. Qe8+ Kg7 {While of course I would have loved to have converted my
advantage, I was not too unhappy with the match victory. It was a pleasant
surprise to learn exactly what that victory meant!} 1/2-1/2

[Event "2018 Pan American Intercollegiate Champ"]
[Site "?"]
[Date "2018.12.30"]
[Round "6"]
[White "Hu, Bryan"]
[Black "Derakhshani, Dorsa"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2314"]
[BlackElo "2284"]
[Annotator "Hu, Bryan"]
[PlyCount "65"]
[EventDate "2018.12.29"]
[SourceDate "2018.12.30"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Bb7 5. Nc3 Ne4 6. Nxe4 Bxe4 7. Nd2 Bb7 8. e4
Qf6 {Immediately attempting to capitalize on the awkward placement of the Nd2.}
9. e5 {Already, I'd never seen this position before and was uncomfortably
out-of-book here. I mulled over 9. d5 and the text, whittling my time down to
half an hour left.} (9. d5 Bc5 10. Nf3 Qg6 {and the pressure on e4/g2 will
likely usher White into sacking a pawn for long-term compensation all the same.
}) 9... Qg6 (9... Qd8 10. Nf3 d6 $11 {also gives Black good play}) 10. Nf3 c5
11. d5 {A thematic and logical continuation of 9. e5} exd5 12. cxd5 Qe4+ 13.
Be3 Qxd5 (13... Bxd5 14. h3 {takes away g4, entangling Black's pieces in the
center and forcing time-consuming retreats, i.e. ...Be6 and ...Qb7}) 14. Qc2
$44 {Here White has rapid development and excellent long-term compensation for
the pawn, with soft spots on d7, f7, and even h7 vying for my attention.
Objectively, the position should lead to no advantage with correct play, but
these positions are always pleasant for White. The fact that my game was very
natural to play also soothed my clock situation somewhat.} Be7 15. Bc4 Qe4 16.
Bd3 Qc6 (16... Qg4 $5 {simply invites} 17. O-O-O {when} Qxg2 18. Be4 Bxe4 19.
Qxe4 {is visually unappealing for Black. Indeed,} Nc6 20. e6 {is a scary path
to go down in your mind's eye, especially for strong players who know the
dangers of pawn-grabbing. In fact, however, this line is complicated yet equal
according to the silicon monster. With the benefit of hindsight, the position
after 16. Bd3 calls for no ordinary consolidation - White basically has
endless piece activity, and Black can't simply "rein it in" with 16...Qc6. In
order to have a sufferable game, fighting onwards with hand-to-hand combat was
probably the best practical option. As a taste of the chaos:} fxe6 21. Rhg1 Qh3
22. Ne5 Rc8 23. Rxd7 Bf6 $15 {Sometimes, then, you just have to get your hands
dirty...}) 17. O-O-O Na6 {with the plan of ...Nc7 and ...0-0-0. Not wanting to
allow this bit of consolidation, I chose the more aggressive of two paths by
throwing another pawn into the fire.} 18. e6 $1 {Clearance sacrifices 101.} (
18. Bf5 {is the subdued continuation, with} O-O-O 19. Ng5 Bxg5 (19... Rhf8 20.
Nxh7 Rfe8 21. Ng5 {gets a pawn back with continued pressure}) 20. Bxg5 f6 21.
exf6 gxf6 22. Bf4 {providing still excellent compensation. White's bishops
rule the board and the pawn on d7 cries out for help.}) 18... dxe6 (18... Qxe6
19. Rhe1 {is like staring down a double-barrel shotgun - show me a brave
player who will try it and I will show them the evaluation.}) (18... fxe6 {
I didn't even consider 18...fxe6, but the lines are interesting:} 19. Ne5 Qc7 {
gives White several juicy options, including 20. Bf4 or 20. Bg6+.}) 19. Ne5 Qc8
{anything else drops the knight on a6 at the very least via a check on a4.} 20.
Bb5+ Kf8 21. Bf4 {[#] now threatening 22. Bd7 according to the mantra, "the
threat is stronger than the execution", since an immediate 21. Bd7 is harmless.
But of course the engines suggest something even better...} (21. Qe2 $1 {
with Qh5 is Stockfish's preferred method of attack.} Nb8 22. Qh5 g6 23. Qh6+
$18 {etc}) (21. Bd7 $2 Qc7 22. Bf4 Bg5 $1 $15 {and Black gets away}) 21... Bd5
$2 {[#]} (21... Nb8 {was ugly but necesssary, in order to cover d7. The idea
here is to sacrifice back the exchange and hope for the best.} 22. Nd7+ Kg8 (
22... Nxd7 23. Bxd7 Qd8 24. Bxe6 $18 {is not to be considered.}) 23. Nxb8 Rxb8
{Stockfish doesn't even want the exchange, recommending 24. Rhe1 +/- here, but
the human continuation is to of course snap up the rook and play Rd7.} 24. Bxb8
(24. Rhe1) 24... Qxb8 25. Rd7) 22. Rxd5 $1 {No hesitation, of course. I hardly
calculated here, partly because nothing else makes sense, and partly because I
was feeling the last-round nerves.} exd5 23. Bd7 Qd8 {Black traps her own
queen, but the alternative wasn't pretty.} (23... Qb7 {can only lead to
disaster;} 24. Qf5 Bf6 (24... f6 25. Bc6 Qc8 26. Nd7+ Kf7 27. Qxd5+ $18) 25.
Bc6 Qc8 26. Nd7+ Kg8 27. Bxa8 $18) 24. Qf5 Bf6 (24... f6 25. Nc6 {is no
different.}) 25. Nc6 g6 26. Qxd5 Bxb2+ {The queen gets out, but forget
material. White's entire army is swarming the Black king while his troops
sleep, so the end is near.} 27. Kxb2 Qf6+ 28. Be5 Qxf2+ 29. Ka1 f6 30. Qd6+ Kg7
31. Qe7+ Kh6 32. Bxf6 Qxg2 33. Qe3+ {with Rg1 to follow.} 1-0

[Event "45th Annual Eastern Open"]
[Site "Tyson's Corner, Virginia"]
[Date "2018.12.30"]
[Round "6.1"]
[White "Lenderman, Alex"]
[Black "Erenburg, Sergey"]
[Result "1-0"]
[ECO "D45"]
[Annotator "Lenderman, Alex; Erenburg, Sergey, Beckman, T"]
[PlyCount "82"]
[EventDate "2018.12.27"]

1. c4 c6 2. d4 d5 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6 6. Qc2 (6. b3 Bb4 7. Bd2 Nbd7)
6... c5 (6... Nbd7 7. b3 Bd6 (7... Bb4 8. Bb2) 8. Bb2 O-O 9. Be2 e5 10. Nxd5
Nxd5 11. cxd5 Qa5+ 12. Bc3 Bb4 13. Bxb4 Qxb4+ 14. Qd2 Qxd2+ 15. Kxd2 exd4 16.
Nxd4 cxd5 17. Rhc1) 7. cxd5 exd5 8. Be2 Nc6 9. O-O Be6 (9... cxd4 10. Nxd4 Nxd4
(10... Qc7 11. Nxc6 bxc6 12. b3 Bd6 13. h3 O-O 14. Bb2 Re8 15. Rac1 Bd7 16.
Rfd1 h6 17. Bf3 Rac8 18. Na4 Ne4 19. Bxe4 Rxe4 20. Nc5 Bxc5 21. Qxc5) 11. exd4
Be7 12. Bg5 Be6 13. Bf3 Qd7 14. Qb3 Rd8 15. Rac1 Ne4 16. Bxe7 Nd2 17. Qd1 Nxf3+
18. Qxf3 Qxe7 19. Na4 O-O 20. Nc5) 10. Rd1 cxd4 (10... Nb4 11. Qd2 Ne4 12. Nxe4
dxe4 13. a3 exf3 14. Bxf3 Nc6 15. d5 Ne5 16. dxe6 Nxf3+ 17. gxf3 fxe6) 11. Nxd4
Nxd4 12. Rxd4 Bc5 13. Rd1 Qe7 (13... O-O 14. Nxd5) 14. Bf3 {[#]} (14. Na4 Bd6 (
14... Ba7 15. Bxa6) 15. Nb6 Bxh2+ 16. Kxh2 Qd6+ 17. Kg1 Qxb6 18. Qa4+ Bd7 19.
Qf4 O-O 20. b3 Rac8 21. Bb2 Rc2) 14... O-O (14... Rd8 15. b3 O-O 16. Bb2 Rc8
17. Nxd5 Bxd5 18. Bxd5 Bxe3 19. Qe2 Nxd5 20. Rxd5 Bc5) 15. Bxd5 Nxd5 16. Nxd5
Bxd5 17. Rxd5 Rac8 18. Qd3 (18. Bd2 Bxe3 19. Bc3 Bb6 20. Qb3 (20. Qf5 Qe6 21.
Qf3 f6) 20... Qe6 21. Rad1 (21. Re1 Rxc3) 21... h6 22. h3 Rfe8 23. Qb4 Rc6 24.
Re5 Qc8 25. Rde1) 18... Rfd8 {[#]} (18... Rcd8 19. g3 b6 (19... Rxd5 20. Qxd5
Rd8 21. Qf3 Bd6 22. e4 Be5)) 19. g3 Rxd5 (19... b6 20. Qxa6 Qe4 21. Rd2) (19...
Bb6 20. Bd2 Rxd5 21. Qxd5 Rd8 22. Qb3 Rxd2 23. Qxb6 Qe4) 20. Qxd5 b6 (20... Rd8
21. Qf3 Qd7 (21... Bd6 22. Kg2 Be5 23. e4 Qb4 24. Be3 Bxb2 25. Rb1 b5 26. Bb6 (
26. Bc1 Qe1) 26... Re8 27. Qd3 h6) 22. b3 f6 23. Kg2 b6 24. Bb2 Qd2 25. Bd4
Bxd4 26. Rd1 Qxa2 27. Rxd4 Rxd4 28. exd4 Qd2 29. Qd5+ Kf8 30. Qd8+ Kf7 31. Qxb6
) 21. Kg2 (21. Qf5 Rd8 22. Qc2 Qd7 (22... Qd6 23. b3 Qd3 24. Qxd3 Rxd3 25. Kf1)
23. b3 h5) (21. b3 Qf6 22. Rb1 Rd8 23. Qh5 Qg6 24. Qxg6 Rd1+ 25. Kg2 hxg6 26.
Ra1 g5) 21... Rd8 22. Qf3 h6 (22... Qe5 23. Rb1 Qd6) 23. b3 a5 (23... Qe5 24.
Rb1 Qc3 25. Qe4 Qd3 26. Qxd3 Rxd3 27. Rb2 Ba3 28. Rd2) 24. Bb2 (24. Rb1 Rd1 25.
Qxd1 (25. Ra1 Rd8) 25... Qe4+ 26. f3 Qxb1 27. Qd2 f5) (24. h4) 24... Rd2 25.
Bc3 Rc2 26. Bd4 Bxd4 27. exd4 Qe2 (27... Rd2) 28. Qxe2 Rxe2 29. Kf3 Rc2 (29...
Rd2 30. Ke4 Rxf2 31. Kd5 Rxh2 (31... Rc2) 32. Kc6) 30. Re1 (30. Ke4 Kf8 31. Kd5
Ke7) (30. Ke3 Kf8) 30... Rxa2 (30... Kf8 31. Re2) 31. Re8+ Kh7 32. Rb8 g6 (
32... Ra3 33. Rxb6 a4 34. Ke4 axb3 (34... f5+) (34... Rxb3 35. Rxb3 axb3 36.
Kd3) 35. d5 Ra2 36. Rxb3) (32... Rb2 33. Rxb6 a4 34. Ke3 axb3 35. d5 Rb1 36.
Kd2 g5 37. d6 Rb2+ 38. Kc3 Rb1 39. Rb8 Rd1 40. Rd8 Kg7 41. Kxb3 Kf6 42. Kc4 Ke6
43. Re8+ Kd7 44. Re7+ Kxd6 45. Rxf7 Rf1 46. Kd4 Ke6) 33. Rxb6 Kg7 34. d5 (34.
Ke3 a4 35. b4 Rb2 36. h4 a3) (34. h4 h5 35. Ke3 Kf8 36. f3 a4 37. bxa4 Rxa4 38.
g4 hxg4 39. fxg4 Ra5) 34... a4 35. bxa4 (35. b4 Rb2 36. Ke3 a3 37. Ra6 Rxb4 38.
Rxa3 Kf6) 35... Rxa4 36. g4 (36. Ke3 Kf8 37. h4 (37. Rb7 h5 38. h4 Ke8 39. f3
f6 40. d6 Ra6 41. Re7+ Kf8 42. Rd7 Ke8 43. Rg7 Rxd6 44. Rxg6 Kf7 45. Rh6 Rd5
46. Rh8 Ra5 47. Rd8 Ke6) 37... h5 38. Rb7 Ke8 39. f3 Rc4) 36... Rd4 37. Rd6 (
37. Rb7 h5 38. h4) 37... Kf8 38. Rd8+ Ke7 39. Rh8 h5 (39... Rxd5 40. Rxh6) 40.
gxh5 Rxd5 41. hxg6 fxg6 1-0

[Event "45th Annual Eastern Open"]
[Site "Tyson's Corner, Virginia"]
[Date "2018.12.28"]
[Round "3.9"]
[White "Erenburg, Sergey"]
[Black "Xu, Arthur"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2589"]
[BlackElo "2060"]
[Annotator "Erenburg, Sergey"]
[PlyCount "95"]
[EventDate "2017.09.03"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 (7. Nb3)
7... Be7 8. Bc4 Qc7 9. Bb3 O-O 10. O-O Nc6 (10... Be6) 11. Bg5 $1 Be6 12. Bxf6
Bxf6 13. Nd5 Bxd5 14. Bxd5 Rac8 15. c3 Rfd8 16. Qd3 Ne7 (16... Na5) 17. Bb3 Qa5
18. Rfd1 Rd7 19. Rd2 Qc5 (19... Rcd8 20. Rad1) 20. Rad1 Rcd8 21. g3 h5 (21...
g6) 22. h4 g6 23. Ng5 Bxg5 (23... Nc8 24. Qf3 Bxg5 25. hxg5 Nb6 26. g4) (23...
Rf8 24. Ne6) 24. hxg5 Nc6 (24... d5 25. Qf3) (24... Kg7 25. Qf3 Ng8 26. g4) 25.
Qf3 Na5 26. Bd5 Nc4 {[#]} 27. Qf6 (27. Re2 Nb6 28. Bb3 Nc4) 27... Nxd2 28.
Qxg6+ Kf8 29. Qh6+ Ke7 30. Qf6+ Ke8 31. g6 Nf3+ 32. Kg2 Re7 33. gxf7+ Kd7 34.
Qf5+ Kc7 35. f8=Q Rxf8 36. Qxf8 Rh7 37. Qxf3 Kb6 38. Qe3 Qxe3 39. fxe3 Rg7 40.
Rh1 Rg5 41. Bf7 Kc5 42. Rxh5 Rxh5 43. Bxh5 Kc4 44. g4 Kd3 45. g5 Kxe4 46. g6
Kxe3 47. g7 Kd2 48. g8=Q 1-0

[Event "U.S. Armed Forces Open"]
[Site "?"]
[Date "2018.10.06"]
[Round "?"]
[White "Eigen Wang"]
[Black "Larry Larkins"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2352"]
[BlackElo "2021"]
[Annotator "Larkins, Larry"]
[PlyCount "101"]
[EventDate "2018.??.??"]
[SourceDate "2019.01.22"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2
Be7 9. g3 b6 10. Bh3 g6 11. O-O Bb7 12. Ne2 Na5 13. b3 Rc8 14. c3 Bc6 15. g4 h5
16. gxh5 (16. f5) 16... Rxh5 17. Bg4 Rh8 18. Ng3 Bb5 19. Rf2 Nf8 20. Re1 Qc7
21. Ng5 Rh4 22. Bd1 cxd4 23. Bxd4 Nc6 24. Nf3 Rh8 25. Be3 Nb8 26. a4 Bd7 27.
Ne2 Bc6 28. Ned4 Bb7 29. Ne2 Nbd7 30. b4 Rh3 31. Bd4 a5 32. Kg2 Rh8 33. Bb3 Nb8
34. Rc1 Na6 35. Qe3 Nd7 36. Rff1 Qd8 37. b5 Nac5 38. Bc2 Ne4 39. Ng3 Ndc5 40.
Nxe4 dxe4 41. Nd2 Qd5 (41... Nd3 42. Bxb6 Nxf4+ 43. Rxf4 Qxd2+ 44. Qxd2 e3+ 45.
Qd5 Bxd5+ 46. Be4) 42. c4 Qd7 43. Nxe4 Kf8 44. Rfd1 Qc7 45. Kg3 Bxe4 46. Bxe4
Nxa4 47. Ba1 Nc5 48. Bc6 Rd8 49. Qf3 Kg7 50. Rd6 Qb8 51. Kf2 (51. Kg2 Rh4 52.
Kh1 Rdh8 53. Rd2 R8h5 54. Rg2 Qh8 55. Qf2 Rh3 56. Qd4 Qb8 57. Qg1 {[#]} Nb3 58.
Rd1 Bc5 59. Qe1 Nxa1 60. Rxa1 Qd8 61. Rd1 Qh4 62. Qxh4 R5xh4 63. f5 exf5 64.
Rd7 Rxc4 65. Re2 (65. Rxf7+ Kxf7 66. Bd5+ Ke7 67. Bxc4 Rc3) 65... Rc1+ (65...
f4) 66. Kg2 Rhc3 67. h3 Rg1+ 68. Kh2 Rgg3 69. Bg2 Rge3 70. Rxe3 Rxe3 71. Bd5
Rxe5 72. Rxf7+ Kh6 73. Bc6 Re7 {[#]} 74. Rxe7 Bxe7 75. Bd5 a4 76. Kg2 Kh5 77.
Bf7 Bd6 78. Kf3 a3 79. Kg2 Kh4 80. Ba2 g5 81. Be6 g4 82. hxg4 fxg4) 0-1

[Event "Syracuse"]
[Site "Syracuse, NY USA"]
[Date "1934.08.21"]
[Round "11"]
[White "Samuel Reshevsky"]
[Black "Arnold Denker"]
[Result "1-0"]
[ECO "A52"]
[Annotator "Pandolfini, Bruce"]
[PlyCount "39"]
[EventDate "1934.08.13"]

1. d4 Nf6 2. c4 e5 {[#]} 3. dxe5 Ng4 (3... Bb4+ 4. Bd2) 4. e4 (4. Nf3) (4. Bf4)
(4. f4 Bc5) 4... d6 5. Be2 (5. exd6) 5... Nxe5 6. f4 Ng4 7. Nf3 (7. Bxg4 Qh4+)
(7. h3 Qh4+) 7... Nc6 8. O-O Bd7 (8... Be7) 9. Nc3 (9. h3) 9... Be7 10. h3 Nf6
(10... Nh6) 11. e5 dxe5 12. fxe5 (12. Nxe5) 12... Ng8 (12... Bc5+) (12... Nh5)
13. Be3 f6 (13... Nh6) 14. Bd3 fxe5 (14... Be6) 15. Ng5 (15. Nxe5 Nxe5 16. Qh5+
) 15... Nf6 16. Rxf6 Bxf6 (16... gxf6 17. Qh5+ Kf8 18. Qf7#) 17. Qh5+ g6 18.
Bxg6+ hxg6 (18... Kf8 19. Qh6+ Bg7 20. Rf1+) (18... Ke7) 19. Qxg6+ (19. Qxh8+
Bxh8) 19... Ke7 20. Bc5# 1-0

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM I"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/6k1/8/3b4/8/2N3q1/3BK1P1/3Q4 b - - 0 1"]
[PlyCount "1"]

{[#]} 1... Bc4# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM II"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "4k3/8/4b3/2p5/8/2NK2n1/5q2/3QR3 b - - 0 1"]
[PlyCount "1"]

{[#]} 1... c4# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM III"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "6k1/8/8/2B1b3/5qn1/5N2/6P1/5QKN b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Qh2+ 2. Nxh2 Bxh2# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM IV"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/8/8/6b1/5n2/1k1P4/3KB3/3R4 b - - 0 1"]
[PlyCount "1"]

{[#]} 1... Ng2# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM V"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/8/4b3/7k/6nq/5PB1/6KP/6QR b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Qh3+ 2. Kxh3 Ne3# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM VI"]
[Black "Mating net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "8/1k6/8/8/8/6q1/2QPPn2/2B1KR2 b - - 0 1"]
[PlyCount "5"]

{[#]} 1... Nd3+ 2. Kd1 Qe1+ 3. Rxe1 Nf2# 0-1

[Event "Tata Steel"]
[Site "?"]
[Date "2019.01.27"]
[Round "11"]
[White "Kramnik, Vladimir"]
[Black "Shankland, Sam"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "2777"]
[BlackElo "2725"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "132"]
[EventDate "2019.??.??"]
[SourceDate "2019.02.05"]

1. c4 c6 2. Nf3 d5 3. g3 g6 4. Qa4 d4 5. Bg2 Bg7 6. d3 Nd7 7. O-O Nh6 8. Nbd2
O-O 9. b4 e5 10. c5 a6 11. Nc4 f6 12. Qb3 Nf7 13. e3 dxe3 14. Bxe3 Kh8 15. Rae1
Re8 16. Na5 Re7 17. d4 e4 18. Nd2 f5 19. d5 cxd5 20. Qxd5 Qe8 21. c6 Nf6 22.
Qc5 bxc6 23. Ndc4 Be6 24. Rc1 Bd5 25. Bd4 Rb8 26. a4 Re6 27. Nb6 Bf8 28. Qc3
Kg8 29. Nac4 Nd7 30. a5 Nd6 31. Nxd6 Bxd6 32. Rfd1 Nxb6 33. axb6 Be5 34. Bxe5
Rxe5 35. Qe3 Qf7 36. Ra1 Qb7 37. Qd4 Re7 38. b5 cxb5 39. Qxd5+ Qxd5 40. Rxd5
Rxb6 41. Rd8+ Kf7 42. Ra8 {[#]} Ree6 (42... b4 43. R8xa6 Rxa6 44. Rxa6 Rb7 45.
Ra2 b3 46. Rb2 Ke6 47. f3 Ke5 48. Kf2 Kd4 49. fxe4 fxe4 (49... Kc3 50. exf5 Rf7
51. Rxb3+ Kxb3 52. Bd5+) 50. Rd2+ Ke5 (50... Kc3 51. Bxe4) 51. Rb2) 43. Ra7+ (
43. f3 exf3 44. Bxf3 Kf6 45. Rb1 b4 46. Bd5 Red6 47. Bc4) 43... Kf6 44. Rxh7 b4
45. Rc7 {[#]} (45. f3 e3 46. f4 b3 47. Bd5 b2 48. Rb1 e2 (48... Re7 49. Rxe7
Kxe7 50. Kg2) 49. Bxe6 Rxe6 50. Re1 b1=Q 51. Rxb1 e1=Q+ 52. Rxe1 Rxe1+) 45...
b3 46. Bf1 Rec6 (46... a5 47. Bc4 b2 48. Rb1 Re7 49. Rc5 a4 50. Ba2 (50. Ra5
Rb4)) 47. Rxc6+ Rxc6 48. Rb1 Rb6 49. Bc4 b2 {[#]} 50. Ba2 (50. Bxa6 Rxa6 51.
Rxb2) 50... a5 {[#]} 51. Kf1 (51. f3 exf3 (51... e3 52. Kf1 g5 53. f4 gxf4 54.
gxf4 Rb4 55. Ke2) 52. Kf2 Ke5 53. Kxf3 Kd4 54. Rd1+ Kc3 55. Ke2 a4 56. Rd3+ Kb4
(56... Kc2 57. Rd2+) 57. Kd2 Rc6 58. Rd4+) 51... a4 52. Ke2 a3 53. Kd2 Rc6 54.
h4 (54. f3 exf3 55. Ke3 Rc2 56. Kxf3 Rxh2) 54... Ke5 55. Re1 Kd4 56. Bb1 Rc3
57. Rh1 Rd3+ 58. Kc2 Rc3+ 59. Kd2 Rf3 60. Ke2 Rd3 61. h5 gxh5 62. Ke1 (62. Rxh5
Rc3) 62... Rc3 63. Kd2 f4 64. Ba2 (64. gxf4 Rc1) 64... e3+ 65. fxe3+ fxe3+ 66.
Ke2 Rc2+ 0-1

[Event "PRO League Group Stage"]
[Site "chess.com INT"]
[Date "2019.01.30"]
[Round "4"]
[White "Kuybokarov, Temur"]
[Black "Safarli, E."]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2513"]
[BlackElo "2681"]
[Annotator "Naroditsky, Daniel"]
[PlyCount "137"]
[EventDate "2019.01.08"]
[EventType "team (rapid)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "The Week in Chess 1265"]
[Source "Mark Crowther"]
[SourceDate "2019.02.04"]
[WhiteTeam "Australia Kangaroos"]
[BlackTeam "San Jose Hackers"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 O-O 7. Qc2 Bd7 8. Bd2
Bxc3 9. Bxc3 Ne4 10. Bd3 f5 11. Qb3 Nxc3 12. Qxc3 Be8 13. O-O Bh5 14. Nd2 Ne7
15. f4 Kh8 16. b4 Rg8 17. Nb3 b6 18. c5 g5 19. Rac1 Ng6 20. cxb6 axb6 21. Rf2
Ra7 22. Bf1 h6 23. Kh1 Qd6 24. Qc6 Rga8 25. Qb5 Ne7 26. Rfc2 gxf4 27. exf4 Qxf4
28. Qd7 Qd6 29. Qxd6 cxd6 30. Re1 Bf7 31. Nc1 Kg7 32. Bd3 Kf6 33. b5 Ra4 34.
Rc7 Rxd4 35. Rd7 Nc8 36. Rd8 e5 37. Rf1 e4 38. Be2 Be6 39. g4 Rda4 40. gxf5 Bf7
41. Rh8 Ne7 42. Rxh6+ Ke5 43. Rh7 Rf8 44. Bh5 Kf6 45. Bxf7 Rxf7 46. Rh6+ Ke5
47. Re6+ Kd4 48. f6 Ng6 49. Rxd6 Kc5 50. Rd8 Ne5 51. Rf5 Kd4 52. Nb3+ Ke3 53.
Rxe5 Rxf6 54. Rdxd5 Rxa2 55. Rf5 Rxf5 56. Rxf5 Rb2 57. Nc1 Rb1 58. Rf6 Rxc1+
59. Kg2 Kd2 60. Rd6+ Ke2 61. Rxb6 e3 62. Re6 Rc5 63. b6 Rg5+ 64. Kh3 Rg7 65.
Kh4 Kf3 66. Kh5 e2 67. Rf6+ {[#]} Ke4 68. Re6+ (68. Rf8 e1=Q 69. Re8+ Kf5)
68... Kf5 69. Rxe2 0-1

[Event "119th U.S. Open Championship"]
[Site "?"]
[Date "2018.07.31"]
[Round "?"]
[White "John Hartmann"]
[Black "FM Michael Langer"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "1879"]
[BlackElo "2289"]
[Annotator "Hartmann, John"]
[PlyCount "57"]
[EventDate "2018.??.??"]
[SourceDate "2019.02.08"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nb4 6. Bb5+ N8c6 7. d4 cxd4 8.
a3 Bd7 (8... dxc3 9. Qxd8+ Kxd8 10. axb4 cxb2 11. Bxb2) 9. axb4 dxc3 10. bxc3
g6 11. O-O Bg7 12. Bf4 Bxc3 13. Ra3 Bxb4 14. Rd3 Qc8 15. Qb3 a5 (15... Bd6 16.
Rxd6 exd6 17. Bxd6) 16. Rfd1 Be6 17. Qb2 f6 (17... O-O 18. Bh6 f6 19. Bxf8 (19.
Ng5) (19. h4) 19... Qxf8) 18. Bh6 Rg8 19. e5 Kf7 20. exf6 exf6 {[#]} 21. Ng5+
fxg5 (21... Ke7 22. Rf3) 22. Rf3+ (22. Bxg5 Be7 23. Rf3+ Ke8 24. Bxe7 Kxe7 25.
Qf6+) 22... Ke8 23. Re3 (23. Rf6) (23. Qe2) 23... Kf7 24. Rf3+ Ke8 25. Re3 Kf7
26. Bxg5 Be7 27. Rf3+ Ke8 28. Bxe7 Kxe7 29. Qf6+ 1/2-1/2

