[Event "45th Annual Tennessee Open"]
[Site "?"]
[Date "1991.??.??"]
[Round "?"]
[White "Mike Abron"]
[Black "Billy Winchester"]
[Result "1-0"]
[ECO "D04"]
[Annotator "Kinney, Zachary"]
[PlyCount "34"]
[EventDate "1991.??.??"]
[SourceDate "2020.04.06"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. Ne5 e6 5. c3 Bd6 6. Bd3 O-O 7. O-O Nc6 8. f4
Ne8 9. Qh5 g6 10. Qh6 Ng7 11. g4 f5 12. gxf5 exf5 13. Nd2 Nh5 14. Rf2 Re8 15.
Rg2 Re6 16. Qxh5 Rf6 17. Ndf3 Kh8 1-0

[Event "2018 Idaho Open"]
[Site "?"]
[Date "2018.04.14"]
[Round "2"]
[White "Alex J. Manchin"]
[Black "Michael Abron"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1838"]
[BlackElo "1509"]
[Annotator "Kinney, Zachary"]
[PlyCount "76"]
[EventDate "2018.??.??"]
[SourceDate "2020.04.06"]

1. e4 d5 2. exd5 Nf6 3. c4 e6 4. dxe6 Bxe6 5. Nf3 Bd6 6. Be2 O-O 7. O-O c6 8.
Nc3 Qc7 9. d4 Nbd7 10. h3 Rad8 11. Be3 h6 12. Rc1 Qb8 13. Qc2 Bf4 14. Bxf4 Qxf4
15. Rfd1 g5 16. Qd2 Nh5 17. Qxf4 Nxf4 18. Bf1 g4 19. Nh4 gxh3 20. g3 Ng6 21.
Kh2 Nf6 22. f3 Nxh4 23. gxh4 Nh5 24. Ne2 Rfe8 25. Re1 Bf5 26. Red1 Re3 27. Ng3
Nxg3 28. Kxg3 Kh8 29. Kf4 Rde8 30. Kxf5 Rxf3+ 31. Kg4 Ree3 32. Bxh3 Rg3+ 33.
Kh5 Rxh3 34. Re1 Reg3 35. d5 Rg5+ 36. Kxh6 Rg6+ 37. Kh5 Kg7 38. Rcd1 Rhg3 0-1

[Event "National Chess Day 1"]
[Site "?"]
[Date "2019.10.12"]
[Round "2"]
[White "Michael Abron"]
[Black "Raul Caballero"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1526"]
[Annotator "Kinney, Zachary"]
[PlyCount "43"]
[EventDate "2019.??.??"]
[SourceDate "2020.04.07"]

1. d4 d6 2. Nf3 e6 3. e4 Bd7 4. Bd3 Be7 5. O-O Nf6 6. c3 Nc6 7. Na3 a5 8. c4 e5
9. d5 Nb4 10. Re1 O-O 11. Bg5 Re8 12. h3 c6 13. b3 Qb8 14. dxc6 bxc6 15. c5 Be6
16. Re3 dxc5 17. Nc4 Qc7 18. Nfxe5 Rad8 19. Qe2 Bxc4 20. Nxc4 Nh5 21. Bxe7 Qxe7
22. g3 1-0

[Event "AlphaZero - Stockfish Match"]
[Site "London ENG"]
[Date "2018.01.18"]
[Round "?"]
[White "AlphaZero (Computer)"]
[Black "Stockfish (Computer)"]
[Result "1/2-1/2"]
[ECO "D07"]
[Annotator "Soltis, Andy"]
[PlyCount "374"]
[EventDate "2018.??.??"]

1. d4 {book} d5 {book} 2. c4 {book} Nc6 {book} 3. Nf3 {book} Bg4 {book} 4. cxd5
{book} Bxf3 {book} 5. gxf3 {book} Qxd5 {book} 6. e3 {book} e5 {book} 7. Nc3 {
book} Bb4 {book} 8. Bd2 {book} Bxc3 {book} 9. bxc3 {book} Qd6 {book} 10. Rg1 g6
11. Qb3 Nge7 12. f4 exf4 13. e4 O-O-O 14. O-O-O f6 15. h4 Kb8 16. Rg4 Na5 17.
Qa4 b6 18. Rxf4 Qe6 19. d5 Qe5 20. Qd4 Rhf8 21. Kc2 Qd6 22. Qb4 Nb7 23. Qxd6
cxd6 24. Rf3 g5 25. Be3 g4 26. Rg3 h5 27. f3 f5 28. Bg5 Rd7 29. Rg1 gxf3 30.
Bb5 Rc7 31. e5 Nc8 32. Bh6 Rd8 33. e6 Nc5 34. Rgf1 Ne4 35. Rxf3 Rh8 36. Bg5 Rg8
37. Rxf5 Nxc3 38. Ba6 Nxd1+ 39. Kxd1 b5 40. Kd2 Ne7 41. Rf7 Nxd5 42. Bxb5 Rc5
43. Bd3 Re8 44. e7 Kc8 45. Rg7 Rc7 46. Be2 Rexe7 47. Bxe7 Rxe7 48. Rxe7 Nxe7
49. Bxh5 Kd7 50. Bg4+ Ke8 51. Kc3 Nd5+ 52. Kb2 Ne7 53. Kb3 Kf8 54. h5 Kf7 55.
Bf3 Nf5 56. Ka4 Kf6 57. Ka5 Nd4 58. Bd1 Ne6 59. Kb5 Kg5 60. Kc6 Nc5 61. Kd5 Kh6
62. Bf3 Kg5 {[#]} 63. Kc4 Kh6 64. Kd5 Kg5 65. Bd1 Kh6 66. Bg4 Kg7 67. Bf3 Kh6
68. Kc4 Kg5 69. Kd5 a5 70. Bd1 a4 71. Kc4 a3 72. Bf3 Kh6 73. Kc3 Kg5 74. Kc4
Kh6 75. Bd1 Kg5 76. Kd4 Kh6 77. Kc3 d5 78. Bf3 Ne4+ 79. Kd3 Nc5+ 80. Kc3 d4+
81. Kc4 Ne6 82. Kd5 Nf4+ 83. Kxd4 Nxh5 84. Kc3 Nf4 85. Kc4 Kg5 86. Kb3 Nd3 87.
Kxa3 Kf6 (87... Nc1 88. Kb2 Nxa2) 88. Ka4 Ke6 89. Kb5 Kd6 90. a4 Ne5 91. Bg2
Kd7 92. Kb6 Nc4+ 93. Kb7 Na5+ 94. Ka6 Nc4 95. Kb7 Na5+ 96. Ka6 Nc4 97. Bd5 Ne5
98. Kb7 Kd6 99. Bg2 Nc4 100. Bf1 Nd2 101. Bh3 Nc4 102. Bf1 Nd2 103. Be2 Nb3
104. Kb6 Nc5 105. a5 Na4+ 106. Kb7 Nc5+ 107. Kb6 Na4+ 108. Ka6 Kc7 109. Bf1 Nb2
110. Kb5 Nd1 111. Kc5 Nb2 112. Kb5 Nd1 113. Kc5 Nb2 114. Kb4 Nd1 115. Bd3 Nf2 {
[#]} 116. Bf5 Nd1 117. Be4 Kb8 118. Kc5 Nb2 119. Bc2 Ka7 120. Kb5 Kb8 121. Kb4
Ka7 122. Kb5 Kb8 123. Kc5 Ka7 124. Kb4 Ka6 125. Bf5 Nd1 126. Bd3+ Kb7 127. Kc5
Nb2 128. Bb5 Nd1 129. Kd4 Nb2 130. Kc5 Nd1 131. Kd4 Nb2 132. Kc3 Nd1+ 133. Kd3
Nb2+ 134. Kd4 Nd1 135. Be2 Nb2 136. Bb5 Nd1 137. Bc4 Nb2 138. Bf1 Nd1 139. Be2
Nb2 140. Kc5 Na4+ 141. Kc4 Nb6+ 142. Kb5 Nd7 143. Bc4 Ne5 144. Be6 Ka7 145. Bc8
Nd3 146. Be6 Ne5 147. a6 Nf3 148. Bc8 Nd4+ 149. Kc5 Nf3 150. Kd5 Nd2 151. Kd4
Kb6 152. Ke3 Nb1 153. Kd3 Na3 154. Kd4 Nb5+ 155. Kd5 Na3 156. Kd4 Nb1 157. Kc4
Nd2+ 158. Kd4 Nb1 159. Kc4 Nd2+ 160. Kd3 Nb1 161. Kc2 Na3+ 162. Kd3 Nb1 163.
Kd4 Nd2 164. Ke3 Nb1 165. Kd3 Na3 166. Ke4 Nb1 167. Ke5 Nd2 168. Kf4 Nb1 169.
Ke3 Na3 170. Ke4 Nb1 171. Ke3 Na3 172. Kf4 Nb1 173. Ke4 Nd2+ 174. Ke5 Nb1 175.
Kd5 Nd2 176. Ke5 Nb1 177. Kd5 Nd2 178. Bb7 Nb1 179. Kc4 Nd2+ 180. Kd4 Nb1 181.
Kc4 Nd2+ 182. Kd3 Nb1 183. Kc2 Na3+ 184. Kc3 Nb5+ 185. Kc4 Nd6+ 186. Kd3 Nxb7
187. a7 Kxa7 1/2-1/2

[Event "Linares"]
[Site "Linares ESP"]
[Date "1998.03.04"]
[Round "10"]
[White "Veselin Topalov"]
[Black "Alexey Shirov"]
[Result "0-1"]
[ECO "D85"]
[Annotator "Soltis, Andy"]
[PlyCount "114"]
[EventDate "1998.02.22"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bb5+ c6 8.
Ba4 O-O 9. Ne2 Nd7 10. O-O e5 11. f3 Qe7 12. Be3 Rd8 13. Qc2 Nb6 14. Bb3 Be6
15. Rad1 Nc4 16. Bc1 b5 17. f4 exd4 18. Nxd4 Bg4 19. Rde1 Qc5 20. Kh1 a5 21. h3
Bd7 22. a4 bxa4 23. Ba2 Be8 24. e5 Nb6 25. f5 Nd5 26. Bd2 Nb4 27. Qxa4 Nxa2 28.
Qxa2 Bxe5 29. fxg6 hxg6 30. Bg5 Rd5 31. Re3 Qd6 32. Qe2 Bd7 33. c4 Bxd4 34.
cxd5 Bxe3 35. Qxe3 Re8 36. Qc3 Qxd5 37. Bh6 Re5 38. Rf3 Qc5 39. Qa1 Bf5 40. Re3
f6 41. Rxe5 Qxe5 42. Qa2+ Qd5 43. Qxd5+ cxd5 44. Bd2 a4 45. Bc3 Kf7 46. h4 Ke6
47. Kg1 {[#]} Bh3 (47... Be4) (47... Bc2) (47... a3) 48. gxh3 Kf5 49. Kf2 Ke4
50. Bxf6 d4 51. Be7 Kd3 52. Bc5 Kc4 53. Be7 Kb3 54. Bf8 d3 55. Ke3 Kc2 56. Bb4
a3 57. Bxa3 d2 0-1

[Event "Paris"]
[Site "Paris"]
[Date "1863.??.??"]
[Round "?"]
[White "Paul Morphy"]
[Black "Charles Maurian"]
[Result "1-0"]
[Annotator "Soltis, Andy"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[PlyCount "71"]
[EventDate "1863.??.??"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. g3 f5 5. Nh3 Nf6 6. Bb5 Bd6 7. f4 Qe7 8. O-O
O-O 9. c4 a6 10. Bxc6 bxc6 11. fxe5 Bxe5 12. d4 Bd6 13. c5 Qxe3+ 14. Kg2 Be7
15. Re1 Ng4 16. Bc1 Qc3 17. Bd2 Qxd4 18. Rxe7 Qxc5 19. Qe2 d4 20. b4 Qd5+ 21.
Kg1 d3 22. Bc3 Rf7 23. Re8+ Rf8 24. Qe7 Qf7 25. Ng5 Qxe7 26. Rxe7 Nf6 27. Rae1
a5 28. Rxc7 Re8 29. Rd1 axb4 30. Bxf6 gxf6 31. Nxh7 Re6 32. Rxd3 Ba6 33. Rdd7
Bc4 {[#]} 34. a4 (34. Rg7+ Kh8 35. Nf8 Re1+ 36. Kf2 Re2+ 37. Kg1 (37. Kf3 Ra3+
38. Kf4 Rf2#)) 34... bxa3 35. Rg7+ Kh8 36. Nf8 1-0

[Event "Howard Staunton Memorial"]
[Site "London ENG"]
[Date "2008.08.09"]
[Round "2"]
[White "Nigel Short"]
[Black "Jan Timman"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2655"]
[BlackElo "2562"]
[Annotator "Soltis, Andy"]
[PlyCount "79"]
[EventDate "2008.08.08"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Qe2 Nd6 6. Bxc6 dxc6 7. Qxe5+ Qe7
8. Qa5 Qd8 9. Qc3 Nf5 10. Re1+ Be6 11. Qb3 Rb8 12. Rxe6+ fxe6 13. Qxe6+ Ne7 14.
Nc3 Qd7 15. Qe3 b6 16. d4 Kd8 17. Ne5 Qe6 18. Ne4 h6 {[#]} 19. Qb3 (19. Nd6
Qxd6 (19... cxd6 20. Nxc6+ Kd7 (20... Nxc6 21. Qxe6) 21. Nxb8+) 20. Nf7+) 19...
Qxb3 20. axb3 Kc8 21. Rxa7 Rb7 22. Ra1 Rb8 23. Ra7 Rb7 24. Ra1 Rb8 25. h4 Rg8
26. Ra7 Rb7 27. Ra4 Rb8 28. Bf4 Nd5 29. Bg3 Kb7 30. Ng6 Re8 31. f3 Nf6 32. Be5
Nxe4 33. fxe4 h5 34. Kf2 Bd6 35. Bxd6 cxd6 36. Ke3 Re6 37. Nf4 Re7 38. d5 c5
39. Ne6 Rf7 40. Ra1 0-1

[Event "RUS-chT"]
[Site "Moscow"]
[Date "1994.??.??"]
[Round "5"]
[White "Sergey Trofimov"]
[Black "Dmitrij Metlyakhin"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2424"]
[Annotator "Soltis, Andy"]
[PlyCount "39"]
[EventDate "1994.??.??"]

1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 e6 5. Bxc4 Nf6 6. O-O a6 7. e4 Nxe4 8. Qe2
Nf6 9. d5 b5 10. dxe6 bxc4 11. Rd1 Qb6 12. exf7+ Kxf7 13. Ng5+ Kg6 {[#]} 14.
Rd5 (14. Nd2) 14... Nxd5 15. Qe8+ Kf5 16. g4+ Kxg4 17. Qxc8+ Kh5 18. Qe8+ g6
19. Qe2+ Kh6 20. Qe5 1-0

[Event "Gibraltar Masters"]
[Site "Catalan Bay ENG"]
[Date "2004.02.02"]
[Round "7"]
[White "Ernesto Inarkiev"]
[Black "Tejas Bakre"]
[Result "0-1"]
[ECO "B63"]
[WhiteElo "2606"]
[BlackElo "2446"]
[Annotator "Soltis, Andy"]
[PlyCount "86"]
[EventDate "2004.01.27"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8.
O-O-O O-O 9. f3 a6 10. h4 Nxd4 11. Qxd4 b5 12. Kb1 Qc7 13. Qd2 Rd8 14. Bd3 Bb7
15. Qe1 Rac8 16. g4 b4 17. Ne2 e5 18. Ng3 d5 19. Nf5 a5 20. h5 dxe4 21. fxe4
Nd5 {[#]} 22. Nxe7+ (22. Bh4 Bxh4 23. Qxh4 Nf4 24. h6 g6 25. Qf6 Ne6 26. Ne7+
Kf8 27. Nxg6+) 22... Nxe7 23. Bc1 b3 24. Rh2 a4 25. h6 Ba6 26. Qh1 Bxd3 27.
cxd3 g6 28. Bg5 Rd6 29. Rc1 Rc6 30. Rf1 Rc2 31. Qf3 Nd5 32. Rhf2 a3 33. exd5
Rxb2+ 34. Rxb2 axb2 35. Qxf7+ Qxf7 36. Rxf7 bxa2+ 37. Kxa2 Kxf7 38. Kxb2 Rc5
39. Be3 Rxd5 40. Kc3 Ke6 41. Kc4 Rd8 42. Bc5 Ra8 43. Bb4 Ra2 0-1

[Event "USA-ch"]
[Site "New York, NY USA"]
[Date "1954.06.01"]
[Round "4"]
[White "Herbert Seidman"]
[Black "Saul Wachs"]
[Result "1-0"]
[ECO "C01"]
[Annotator "Soltis, Andy"]
[PlyCount "105"]
[EventDate "1954.??.??"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Nf3 Nf6 6. Bd3 Qe7+ 7. Ne5 Bg4 8.
f3 Be6 9. O-O Nbd7 10. f4 Nxe5 11. dxe5 Bc5+ 12. Kh1 Ng4 13. f5 Qh4 14. h3 Nf2+
15. Rxf2 Bxf2 16. fxe6 fxe6 17. Qe2 O-O 18. Bd2 c5 19. b3 Bd4 20. Qg4 Qxg4 21.
hxg4 Rf2 22. Be1 Rf4 23. Be2 Bxe5 24. Rd1 Rf6 25. Bd2 h6 26. Bf3 Rd8 27. Re1
Bg3 28. Re2 g5 29. Be1 Bb8 30. Rd2 Rff8 31. Ne2 Kf7 32. Bg3 b6 33. Bxb8 Rxb8
34. c4 dxc4 35. Rd7+ Kf6 36. Rxa7 cxb3 37. axb3 Rf7 38. Ra2 Rd7 39. Ng3 Rd3 40.
Rf2 Ke7 41. Rb2 Kf6 42. Kh2 Re8 43. Be2 Re3 44. Bc4 Ke5 45. Nf1 Re1 46. Kg3 Kd4
47. Rc2 e5 48. Kf2 Re4 49. Nh2 Re3 50. Nf3+ Ke4 {[#]} 51. Bb5 Rc8 52. Rc4+ Kd3
53. Rxc5+ 1-0

[Event "USA-ch"]
[Site "New York, NY USA"]
[Date "1954.06.06"]
[Round "8"]
[White "Herbert Seidman"]
[Black "Ariel Mengarini"]
[Result "1-0"]
[ECO "B15"]
[Annotator "Soltis, Andy"]
[PlyCount "87"]
[EventDate "1954.??.??"]

1. e4 c6 2. Nc3 d5 3. Nf3 g6 4. d4 Bg7 5. Be2 Bg4 6. exd5 cxd5 7. Ne5 Be6 8.
O-O Nc6 9. Nxc6 bxc6 10. Na4 Nf6 11. Nc5 Bc8 12. c3 O-O 13. Bf4 Nd7 14. Nd3 a5
15. Re1 Re8 16. Bf3 Ba6 17. Ne5 Nxe5 18. dxe5 e6 19. Qd2 Qc7 20. h4 a4 21. g3
Bc4 22. Be2 Bxe2 23. Rxe2 c5 24. Rae1 Reb8 25. h5 Rb7 26. Bg5 Rab8 27. Qf4 c4
28. Qh4 Rxb2 29. Re3 Rxa2 30. g4 Rab2 31. Be7 Bf8 32. hxg6 fxg6 33. Bd6 Qd8 34.
g5 R8b7 35. Qg4 Qe8 36. Rf3 Rf7 37. Rf6 Rxf6 38. gxf6 a3 39. Bxf8 Kxf8 40. Qd4
a2 {[#]} 41. Qa7 Qf7 (41... Qb8 42. Qg7+ Ke8 43. Qe7#) 42. Qa3+ Kg8 43. Qxb2
Qa7 44. Ra1 1-0

[Event "56th US Open"]
[Site "Long Beach, CA USA"]
[Date "1955.08.10"]
[Round "3"]
[White "Sven Elias Almgren"]
[Black "Herbert Seidman"]
[Result "0-1"]
[ECO "B25"]
[Annotator "Soltis, Andy"]
[PlyCount "68"]
[EventDate "1955.??.??"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Nge2 Nge7 7. O-O O-O 8. Be3
Nd4 9. f4 d6 10. g4 f5 11. g5 Rb8 12. Qd2 b5 13. Nd1 b4 14. Ng3 e5 15. fxe5
dxe5 16. exf5 Nexf5 17. Nxf5 Bxf5 18. Nf2 Ne6 19. Ne4 Nf4 20. Bxc5 Bxe4 21.
Bxe4 Rf7 22. Kh1 Kh8 23. Bxb4 Qxg5 24. c4 Qh5 25. Bc3 g5 26. Rf2 g4 27. Qe3 Rb6
28. Raf1 Rh6 29. Qg3 Qg5 30. Bd5 Ne2 31. Qg2 Rxf2 32. Rxf2 {[#]} Qc1+ 33. Rf1
Rxh2+ 34. Kxh2 Qh6+ 0-1

[Event "47th US Open"]
[Site "Pittsburgh, PA USA"]
[Date "1946.07.12"]
[Round "5"]
[White "Herbert Seidman"]
[Black "George Mortimer Kramer"]
[Result "1-0"]
[ECO "C80"]
[Annotator "Soltis, Andy"]
[PlyCount "57"]
[EventDate "1946.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. Qe2 Nc5 7. Bxc6 bxc6 8.
d4 Ne6 9. dxe5 Be7 10. Nc3 O-O 11. Be3 d5 12. exd6 cxd6 13. Rad1 Qc7 14. Rfe1
d5 15. Na4 Rb8 16. c4 dxc4 17. Qxc4 c5 18. Nc3 Rxb2 19. Nd5 Qa7 20. Bc1 Rb7 21.
Ne5 Bd8 22. Nc6 Qa8 23. Nxd8 Rxd8 {[#]} 24. Nf6+ gxf6 (24... Kf8 25. Rxd8+ Nxd8
26. Re8#) 25. Rxd8+ Nxd8 26. Re8+ Kg7 27. Qf4 Kg6 28. Qh6+ Kf5 29. Qh5# 1-0

[Event "New York-ch Match"]
[Site "New York, NY USA"]
[Date "1946.??.??"]
[Round "3"]
[White "Herbert Seidman"]
[Black "Anthony Santasiere"]
[Result "1-0"]
[ECO "E44"]
[Annotator "Soltis, Andy"]
[PlyCount "89"]
[EventDate "1946.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 b6 6. a3 Be7 7. d5 a5 8. Ng3 d6
9. Be2 e5 10. O-O Ne8 11. f4 f5 12. e4 exf4 13. Bxf4 g5 14. Bd2 f4 15. Nh5 Nd7
16. Nb5 Ng7 17. Nd4 Ne5 18. Bc3 Nxh5 19. Bxh5 Bf6 20. h4 h6 21. hxg5 hxg5 22.
Qe2 Bd7 23. g3 c5 24. dxc6 Nxc6 25. Nxc6 Bxc6 26. gxf4 Bxc3 27. bxc3 Ra7 28.
Qg4 Rg7 29. f5 Qf6 30. Rf3 Qe5 31. Re1 Rf6 32. Bg6 Bd7 33. Qg2 Qc5+ 34. Kh1 g4
35. Rfe3 Qxa3 36. e5 dxe5 37. Qd5+ Kh8 38. Rxe5 Rgxg6 39. Qxd7 Rg8 40. Qd4 Qf8
{[#]} 41. Kg2 Kh7 42. Re8 Qh6 43. Rh1 Qh3+ 44. Rxh3+ gxh3+ 45. Kh2 1-0

[Event "New York"]
[Site "New York"]
[Date "1939.??.??"]
[Round "?"]
[White "Herbert Seidman"]
[Black "Anthony Santasiere"]
[Result "1-0"]
[ECO "B29"]
[Annotator "Soltis, Andy"]
[PlyCount "47"]
[EventDate "1939.??.??"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nxc3 5. dxc3 b6 6. Bc4 e6 7. Bf4 Qc7 8.
O-O Bb7 9. Qe2 a6 10. a4 Nc6 11. Rad1 Be7 12. Rd2 O-O 13. Rfd1 Rfd8 14. Ng5 h6
{[#]} 15. Nxf7 Kxf7 16. Rxd7 Qxd7 (16... Rxd7 17. Bxe6+ Kxe6 18. Qc4+ Kf5 19.
Qf7+ Bf6 20. Rxd7 Qc8) 17. Rxd7 Rxd7 18. Qh5+ g6 19. Bxe6+ Kxe6 20. Qxg6+ Bf6
21. Qxf6+ Kd5 22. Qf5 Re7 23. e6+ Kc4 24. Qd3# 1-0

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Newhart, Dennis"]
[Black "North, John"]
[Result "1-0"]
[ECO "D00"]
[Annotator "Alburt, Lev"]
[PlyCount "49"]

1. d4 Nf6 2. e3 e6 3. Bd3 d5 4. f4 {[#]} Nc6 (4... c5 5. c3 (5. b3 Nc6 6. c3 (
6. Nf3 Bd6 7. O-O O-O 8. c3 (8. Qe2 cxd4 9. exd4 Nb4) (8. a3) 8... b6 9. Ne5
Bb7 10. Bb2))) 5. c3 Be7 6. Nf3 a6 (6... O-O) (6... b6) (6... Ne4) 7. Nbd2 b5
8. a3 (8. O-O) 8... Qd6 9. O-O O-O 10. Ne5 Na5 (10... Bd7 11. g4) 11. Rf3 (11.
g4) 11... c5 12. Rh3 {[#]} cxd4 13. exd4 (13. Bxh7+ Nxh7 (13... Kh8 14. Bg6+ (
14. Bd3+ Kg8 15. Qe1 Ne4 16. Nxe4 dxe4 17. Bxe4 f5) 14... Kg8 15. Bxf7+) 14.
Qh5) 13... g6 14. Qe1 (14. g4) (14. Ndf3) 14... Nd7 15. g4 (15. Qg3 Nxe5 16.
fxe5 Qc7 17. Nf3) 15... Nxe5 (15... f6 16. Qh4 Rf7 17. Bxg6 Rg7 18. Bxh7+ Rxh7)
16. fxe5 Qd8 17. Nf3 {[#]} Nb3 18. Bh6 (18. Qe3 f5 19. exf6 Bxf6 20. Rxh7 Kxh7
21. Qh6+ Kg8 22. Qxg6+ Bg7 23. Qh7+ Kf7 24. Bg5) 18... Re8 19. Rb1 (19. Qe3
Nxa1 20. Bg7) 19... Bd7 20. g5 Bf8 21. Qh4 Be7 22. Bg7 {[#]} (22. Rf1) 22... h5
23. gxh6 (23. Bf6 b4 (23... Ra7 24. Qxh5 gxh5 25. Rxh5) (23... Qc7 24. Qxh5
gxh5 25. Rxh5 Bxf6 26. gxf6 Nxd4 27. cxd4 Qxe5 28. dxe5) 24. Qxh5 gxh5 25. Rxh5
Bxf6 26. gxf6) 23... Bxh4 24. Rxh4 {[#]} Qc7 (24... Nd2) 25. Bf6 1-0

[Event "Cairns Cup"]
[Site "St Louis, MO USA"]
[Date "2020.02.15"]
[Round "8"]
[White "Ju Wenjun"]
[Black "Carissa Shiwen Yip"]
[Result "0-1"]
[ECO "C70"]
[WhiteElo "2583"]
[BlackElo "2412"]
[Annotator "Hess, Robert"]
[PlyCount "114"]
[EventDate "2020.02.06"]

{The Cairns Cup was supposed to be a dream come true for Carissa Yip, a
16-year-old invitee to the prestigious all-women event. After four losses to
start the tournament, however, it was shaping up to be an absolute disaster.
Yet Carissa dug deep and finished with a bang, scoring 4 points out of her
final 5 rounds. The highlight of her tournament - and career to this point -
was this fantastic win with the black pieces over the Women's World Champion.} 
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 g6 {Carissa seizes control of the
psychological battle by taking Ju out of her preparation. This move should not
come as too much of a surprise, since Carissa is keen on playing
unconventional openings. In fact, she played the Hippo against GM Nana
Dzagnidze five rounds earlier.} 5. d4 exd4 6. c3 Bg7 {To contradict Gordon
Gekko, greed is not good here.} (6... dxc3 7. Nxc3 Bg7 8. Bg5 f6 (8... Bf6 9.
h4) 9. Bf4 d6 10. Rc1 Nge7 11. Bb3 {keeps Black's king in the center. Castling
kingside is impossible, and castling queenside walks into an attack. The
benefit of being down a pawn is that files open for your pieces.}) 7. cxd4 b5
8. Bb3 Nge7 9. d5 {[#] If we stop and take stock, it seems that Black's
position is in dire straits. In addition to a huge spatial advantage, White
has two central pawns to Black's one. Yet the disadvantage is largely
aesthetic and the most promising element for Black is, undoubtedly, the
dark-squared bishop.} Na5 10. Bd2 {The standard reply, as the pawn on b2 is
protected tactically.} (10. Bc2 O-O 11. O-O d6 12. Nc3 Nc4 {results in a murky
position with chances for both. White has a strong center, but Black has ideas
with ... c5 or ...f5.}) 10... Nxb3 {Black can't take the exchange without
getting punished.} (10... Bxb2 11. Bxa5 Bxa1 12. Nc3 ({It looks so natural, but
} 12. d6 $2 Nc6 13. Bxc7 Qf6 {lets Black off the hook with far more activity
than deserved.}) 12... Bb2 13. Qc2 Ba3 (13... Bxc3+ 14. Qxc3 O-O 15. Bxc7 Qe8
16. Qf6 {is devastating. Black will be mated on the dark squares.}) 14. Nb1 {
wins the bishop or the queen.}) ({Fascinating is} 10... c5 11. d6 Nec6 12. Bc3
O-O {when, in the fashion of the Benoni structure, White maintains central
control but Black has made progress on the queenside.}) 11. Qxb3 c5 12. Bc3 f6
{Black can't afford to swap bishops, since the dark squares will be too weak.
Not to mention with the pawn on c5, the only way to trade is to throw in 12...
c4, which would be an awful strategic decision.} (12... c4) 13. a3 ({White
does not want to go all in, since Black has the bishop pair and is far too
active after} 13. d6 Nc6 14. Qd5 b4 15. Bd2 Bb7 {with ...f5 on the docket.})
13... d6 14. h4 {It's said that h4 must be played against the fianchetto
structure, but here it is not so much an offensive idea as it is a defensive
one.} (14. O-O O-O 15. Nbd2 g5 {provides an important outlet for the knight,
which cramps Black's position from e7. Black's pawn structure is far more
mobile with ...g4 looming, and the white knights do not have a clear objective.
}) 14... O-O 15. Nbd2 Qe8 {Probably slightly inaccurate, but had Carissa
channeled her inner AlphaZero this move would be justified.} (15... Bd7 16. Qd1
(16. O-O a5 {is really bad for White, who can't stop 17...b4 which improves
both of Black's bishop: first the b5 square can be accessed while ... f5 will
open up the long diagonal without the repercussions of trading dark-squared
bishops.}) 16... a5 17. b3) 16. O-O Bd7 ({The drawback of not having the
bishop developed is clear:} 16... a5 17. Qc2 {and} b4 {is not possible, since
the pawn on a5 is pinned. If Black is unable to play the pawn there, it is
White who will be happy to counter on the queenside with b3 like the game, or
even b4 herself.}) 17. Qc2 {[#]} Rc8 ({The AlphaZero-like} 17... g5 $5 {
could be the perfect reply in a game of blitz. In a classical time control
against Ju Wenjun, though, the choice has an abundance of risk. For example:}
18. hxg5 Qh5 19. gxf6 Bxf6 20. Rae1 Ng6 21. e5 dxe5 22. Ne4 {starts to look
quite pleasant for White.}) 18. b3 h6 {Carissa seemingly prepares for the
kingside pawn break, but ultimately she never has the opportunity to play it.}
({Interestingly, one move makes a significant difference here.} 18... g5 $1 19.
hxg5 Qh5 20. gxf6 (20. Qb2 Ng6 21. gxf6 Nf4 22. Rae1 {is scary for White, who
must be ready to meet an assortment of moves including 22...Bh3 or Bh6.}) 20...
Bxf6 21. Rae1 (21. e5 dxe5 22. Ne4 Nxd5 {sees Black secure an extra pawn and a
light-squared bishop with a lot of potential.}) 21... b4 $1 {evidences the
impact of Black's rook being on c8. She is trying to force her opponent into
allowing a rook lift, and attempting to avoid it doesn't feel much safer.}) 19.
a4 Ra8 {Carissa understandably does not want to cede control of the a-file.
But if there was any moment to push the g-pawn, it must be now, right? Well
hold on a second...} (19... g5 20. hxg5 hxg5 21. axb5 axb5 22. Ra6 Ng6 23. Rxd6
g4 24. e5 $1 {and pandemonium breaks loose on the chess board. This is a
perfect position to set up and analyze, as there are myriad richly complex
variations to assess. For instance, check out this madness:} gxf3 25. e6 Nf4
26. Nxf3 Qh5 27. Rxd7 Qg4 28. Nh4 Ne2+ 29. Qxe2 Qxe2 30. Nf5 {Despite being
down a queen for a knight, it is White who comes out ahead!}) 20. axb5 axb5 21.
Rxa8 Qxa8 22. Ra1 Qb7 23. Qa2 {Barreling down the open file typically is a
sensible thing to do, but White had to first play} (23. b4 {which creates
tension and threatens to establish a passed pawn, while keeping the
light-squared bishop at bay.}) 23... Nc8 {[#]} 24. Ne1 {The trajectory of the
game was already heading in Black's favor, but this move is the start of a
logical yet ill-advised plan. Ju Wenjun aims for the c4 square, but here she
needed to uncork threats on the kingside.} (24. h5 b4 25. Bb2 g5 26. Nf1 {
Black has choices here including 26...f5, but the point is so does White, who
certainly lacked concrete options in the game.} f5) ({It's a move too late now,
as} 24. b4 Nb6 {sees Black's pieces come alive. That a4 square looks like an
awfully nice outpost for the knight.}) 24... b4 25. Bb2 Bb5 26. Nc2 Bd3 27. Ne3
({Black would not be forced to repeat after} 27. Ne1 {since the bishop can
continue its plunge into enemy territory with} Be2) 27... Qe7 28. Re1 {
Defending the pawn tactically, but White of course hoped for a more active
approach.} (28. h5 {would free an essential square for the knight if Black did
not clog it first with} f5 {with an edge.}) 28... Nb6 29. Qa1 {White
acquiesces.} ({Ju Wenjun should have chosen the stubborn} 29. Qa5 Qb7 30. Qa1 {
when White has the benefit of dragging her opponent's queen away from the
center, which saves a vital tempo compared to the game. For example} Ra8 31.
Qd1 h5 {doesn't create a bind, since} 32. Qf3 {provides desperately needed
counterplay.}) 29... Ra8 30. Qc1 ({A better try but insufficient for equality
is} 30. Qd1 Ra2 31. Bc1) 30... h5 31. Nec4 Nxc4 32. Nxc4 Ra2 33. g3 Kh7 34. Nd2
{Feeling stuck, White repeats.} (34. Re3 Bh6 35. f4 Bxc4 (35... Bxe4 36. Qb1 $1
{is one of those easy-to-overlook moves that allows your opponent to get right
back into the game. After the exchange of queens, Black is forced to try and
win a very unbalanced ending with little room for error.}) 36. bxc4 Qd7 {
is an indispensable tempo up for White as compared to the game. Black would
still be forced to find a knockout, though her position would remain superior.}
) 34... Bh6 35. f4 Qa7 36. Nc4 (36. Kh1 c4) 36... Qd7 37. Re3 Bxc4 38. bxc4 Qg4
({The move order proved unconsequential, but in another game it might.} 38...
Bxf4 $1) 39. Kh1 {[#]} ({White had one last trick up her sleeve, since} 39. Rd3
Bxf4 (39... f5) 40. Qxf4 Qxf4 41. gxf4 Rxb2 {would be decisive if not for} 42.
e5 $1 fxe5 43. fxe5 {when} Ra2 {is necessary, but with mutual passed pawns,
the extra pawn on the kingside does not prove too valuable.}) 39... Bxf4 $1 40.
gxf4 Qxh4+ 41. Kg1 Qg4+ 42. Kh1 Qxf4 {Carissa devours all of her opponent's
kingside pawns before winning back her sacrificed bishop. The rest was easy.}
43. Qb1 ({The bishop survives for just one more turn after} 43. Rb3 Qxc1+ 44.
Bxc1 Ra1) 43... Rxb2 44. Qxb2 Qxe3 45. Qxf6 Qxe4+ 46. Kh2 b3 47. Qf7+ Kh6 48.
Qf8+ Kg5 49. Qd8+ Kf5 50. Qd7+ Ke5 51. Qg7+ Kf4 52. Qf6+ Kg4 53. Qe6+ {A nice
attempt, though even exchanging the queens is still easily winning, since both
sides promote and Black remains three pawns up.} Qf5 54. Qxd6 Qf2+ 55. Kh1 Qf3+
56. Kh2 Qh3+ 57. Kg1 Qg3+ {Ju Wenjun had enough, since Black not only queens
first but with check and mate.} 0-1

[Event "2019 USA - A (USA)"]
[Site "corr ICCF"]
[Date "2019.03.31"]
[Round "?"]
[White "Belka, Wieland"]
[Black "Sasikiran, Krishnan"]
[Result "1/2-1/2"]
[ECO "C56"]
[WhiteElo "2500"]
[BlackElo "2550"]
[Annotator "Hartmann, John"]
[PlyCount "54"]
[EventDate "2019.??.??"]
[SourceTitle "ICCF 2019"]
[Source "Tim Harding"]
[SourceDate "2020.01.27"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8.
Bxc6 bxc6 9. O-O Bc5 10. f3 Ng5 11. Be3 O-O 12. f4 f6 $5 {[#] Not a novelty,
as l'Ami seems to imply. Still, Sasikiran has worked out a fascinating new
concept in this staid opening.} (12... Ne4 {is by far the main line here, while
}) (12... Ne6 {is a playable alternative. But Sasikiran has something else up
his sleeve...}) 13. exf6 (13. fxg5 $2 fxe5 14. Nf5 d4 {gives Black back the
material with interest, as l'Ami points out.}) 13... Nh3+ $1 (13... Ne4 14.
fxg7 Re8 {was tried in Dostal-Efimov (ICCF 2015) but Sasikiran improves on
this dramatically.}) 14. gxh3 Bxh3 {l'Ami says that Black has full
compensation here; for the details, check out his notes in Yearbook 134. The
game concluded:} 15. b4 Bb6 16. Rf3 Bg4 17. fxg7 Re8 18. Bf2 Qf6 19. c3 Qg6 20.
Kh1 Bxd4 21. cxd4 Qh5 22. Nd2 Re4 23. Kg2 Rxf4 24. Bg3 Rxd4 25. Kg1 Bxf3 26.
Qxf3 Qxf3 27. Nxf3 Rxb4 1/2-1/2

[Event "Omaha"]
[Site "?"]
[Date "1932.??.??"]
[Round "?"]
[White "Ohman, Howard"]
[Black "Buck, G."]
[Result "1-0"]
[ECO "C30"]
[Annotator "Hartmann, John"]
[PlyCount "29"]
[EventDate "1932.??.??"]
[SourceDate "2010.06.14"]

1. e4 e5 2. Nc3 d6 3. f4 exf4 4. Nf3 Be7 5. Bc4 Bh4+ 6. g3 $5 (6. Kf1 {is
another idea.}) (6. Nxh4 Qxh4+ 7. Kf1 {is clearly inferior for White.}) 6...
fxg3 7. O-O gxh2+ (7... Be7 8. Bxf7+ Kxf7 9. Ne5+ Ke8 10. Qh5+ g6 11. Nxg6 {
looks crushing, but Black can play} gxh2+ 12. Kh1 (12. Kxh2 $2 Nf6 $1) 12...
hxg6 13. Qxg6+ Kd7 14. Qf5+ {and there's no mate.}) 8. Kh1 $1 {A neat idea.
The king is safe and White can turn to attack.} Bg3 9. Bxf7+ $5 ({A modern
player might try} 9. d4 {(with the idea of Ng5)} Nf6 10. Ng5 O-O 11. Qf3 {
and White is winning.}) 9... Kxf7 10. Ne5+ Ke6 $2 {Heading up the board leads
to doom for the Black king.} ({Black survives with} 10... Ke8 $1 11. Nf7 (11.
Qh5+ $2 g6 12. Nxg6 Nf6 $1) 11... Qh4 12. d4 {when White lacks compensation
for the material.}) 11. Qg4+ {Mate in five.} Kxe5 ({If} 11... Ke7 12. Qxg7+ Ke6
13. Qf7+ Kxe5 14. Qd5#) 12. d4+ Kxd4 13. Be3+ (13. Qd1+ {also works:} Kc4 (
13... Kc5 14. Qd5+ Kb6 15. Qb5#) 14. Qd5+ Kb4 15. Qb5#) 13... Kxe3 14. Rad1 {
[#] White threatens mate here in six ways. Black finds a way to stop five of
them, but...} Bxg4 (14... -- 15. Rd3# (15. Rf3#) (15. Qf3#) (15. Qe2#) (15.
Qxg3#) (15. Nd5#)) 15. Rd3# 1-0

[Event "Omaha City Ladder"]
[Site "?"]
[Date "1947.02.11"]
[Round "?"]
[White "Saxton, Delmar"]
[Black "Ohman, Howard"]
[Result "1-0"]
[ECO "A50"]
[Annotator "Hartmann, John"]
[PlyCount "29"]
[EventDate "1947.??.??"]
[SourceDate "2010.06.14"]

{This game appears in Chess Calculation Training for Kids and Club Players,
reviewed in our March issue!} 1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. e4 Bb4 5. e5 Ne4
6. Qg4 Nxc3 7. bxc3 Bxc3+ 8. Kd1 Kf8 9. Rb1 c5 10. Ne2 Bxd4 11. Nxd4 cxd4 12.
Ba3+ Kg8 13. Rb3 Nc6 {[#] and now Saxton unleashes a thunderbolt!} 14. Qxg7+ $3
Kxg7 15. Rg3+ ({Edouard gives as his main line} 15. Rg3+ Kh6 16. Bc1+ Kh5 17.
Be2+ Kh4 18. Rh3#) 1-0

[Event "US Open Finals"]
[Site "?"]
[Date "1940.08.28"]
[Round "?"]
[White "Marchand, E."]
[Black "Ohman, Howard"]
[Result "1-0"]
[ECO "B26"]
[Annotator "Hartmann, John"]
[PlyCount "123"]
[EventDate "1940.??.??"]
[SourceDate "2010.06.14"]

1. e4 c5 2. Nc3 Nc6 3. g3 d6 4. Bg2 g6 5. Nge2 Bg7 6. d3 e6 7. O-O Nge7 8. Be3
O-O 9. Qd2 Nd4 10. Nd1 Nxe2+ 11. Qxe2 Bd7 12. c3 Nc6 13. h3 Qe7 14. Kh2 f5 15.
f4 Rab8 16. Bg1 b5 17. a3 a5 18. Re1 e5 19. exf5 Rxf5 20. Ne3 Rff8 21. Nd5 Qd8
22. fxe5 Bxe5 23. Be3 Re8 24. Qd2 Bg7 25. Bg5 Qc8 26. Nf6+ Bxf6 27. Bxf6 Be6
28. Qh6 Rb7 29. d4 cxd4 30. cxd4 d5 31. Rac1 Rf8 32. Qg5 Rbf7 33. Bxd5 (33.
Rxe6 $1 Qxe6 34. Bxd5) 33... Rxf6 34. Rxe6 (34. Rxc6 $1) 34... Rxe6 35. Rxc6
Qxc6 36. Bxc6 Re2+ (36... Rxc6 $2 37. Qd5+) 37. Bg2 Rxb2 38. Qd5+ Kg7 39. Qe5+
Kg8 40. d5 (40. g4) 40... Rff2 $132 41. d6 $2 (41. Qb8+ Kg7 42. Qa7+ Kh8 (42...
Kh6 43. h4) 43. Qxa5 (43. Qb8+ $11) 43... Rxg2+ 44. Kh1 $11) 41... Rxg2+ 42.
Kh1 Rge2 43. Qd5+ Kf8 (43... Kg7 $3 $19) 44. Qf3+ Kg7 45. Qc3+ Kf7 46. Qc7+ Kf6
47. Qd8+ Kf5 48. Qf8+ Ke4 49. Qf1 Rf2 50. Qe1+ Rbe2 51. Qb1+ Kf3 52. Qb3+ Ke4
53. Qe6+ Kd3 54. Qd5+ Kc2 55. Qa2+ (55. Qc6+ $11) 55... Kc3 56. Qa1+ Kb3 (56...
Rb2 $1) 57. Qg1 Kxa3 $4 (57... Rc2 58. d7 Rfd2 $19) 58. d7 b4 59. d8=Q a4 60.
Qa1+ Ra2 61. Qd3+ b3 62. Qd6# {[%eval 828,0] dated} 1-0

[Event "Nebraska Open"]
[Site "?"]
[Date "1948.09.05"]
[Round "2"]
[White "Ludwig, A.C."]
[Black "Ohman, Howard"]
[Result "0-1"]
[ECO "A47"]
[Annotator "Hartmann, John"]
[PlyCount "122"]
[EventDate "1948.??.??"]
[SourceDate "2010.06.14"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. e3 b6 5. Bd3 Bb7 6. Nbd2 d6 7. Qe2 Nbd7 8. e4
h6 9. Bf4 Nf8 10. h3 c6 11. c3 Qc7 12. e5 Nd5 13. Bh2 Nd7 14. Ne4 dxe5 15. Nxe5
Qc8 16. Nc4 O-O 17. Ncd6 Qb8 18. Nf5 $6 {[#] Ludwig lets a big advantage slip
with this move, and Ohman takes the chance to give up his queen for three
minor pieces.} exf5 $1 19. Bxb8 fxe4 20. Bxe4 Raxb8 21. O-O Bd6 22. Rfe1 Rbe8
23. Qf3 N7f6 24. Bc2 b5 25. Kf1 Rc8 26. g3 Rc7 27. Qd3 g6 28. a3 Kg7 29. b3 Bc8
30. Kg2 Bf5 31. Qd2 Bxc2 32. Qxc2 c5 33. Qd2 cxd4 34. cxd4 Rfc8 35. Rec1 Nc3
36. b4 Nfd5 37. Re1 Be7 38. Qd3 Bf6 39. Rac1 Rc4 40. Qf3 Rxd4 41. Rc2 Rdc4 42.
Rd2 Rd8 43. Rd3 a6 44. Rc1 Rcc8 45. Rc2 (45. Rxd5 $1 Rxd5 46. Rxc3 Rxc3 47.
Qxd5 Rxa3 $11) 45... Rc4 46. Rcd2 $2 Ne4 $1 47. Rd1 Ng5 48. Qe2 Nc3 49. Rxc3
Rxc3 50. Rxd8 Bxd8 51. a4 Ne6 52. h4 bxa4 53. Qxa6 a3 54. b5 Rb3 55. Qa4 Nc5
56. Qd4+ Bf6 57. Qxc5 a2 58. Qc4 Ra3 $1 (58... a1=Q 59. Qxb3 {is a longer win.}
) 59. b6 a1=Q 60. b7 Qb1 61. Qc8 Rb3 0-1

[Event "Omaha Experts"]
[Site "?"]
[Date "1949.11.19"]
[Round "1"]
[White "Magee, Lee"]
[Black "Ohman, Howard"]
[Result "0-1"]
[ECO "E62"]
[Annotator "Hartmann, John"]
[PlyCount "84"]
[EventDate "1949.??.??"]
[SourceDate "2010.06.14"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. g3 Nc6 7. Bg2 e5 8. d5 Nd4
9. Nxd4 exd4 10. Ne2 Re8 11. f3 Nh5 12. Nxd4 Bd7 13. O-O Qf6 14. Be3 c6 15.
dxc6 bxc6 16. b3 d5 17. Ne2 $6 Qe7 $6 ({Black could have grabbed the exchange
with} 17... Qxa1 18. Qxa1 Bxa1 19. Rxa1 {but who wants to give up that
beautiful dark squared bishop?}) 18. Bd4 (18. cxd5 cxd5 19. Qxd5 Bxa1 20. Rxa1
{gives White great compensation.}) 18... dxe4 19. fxe4 Bg4 20. Bxg7 Nxg7 21. h3
Rad8 22. Qc2 Bxe2 23. Qxe2 f5 24. Rad1 Rxd1 25. Rxd1 fxe4 26. g4 Qc5+ 27. Kh1
e3 28. Rd3 h5 29. b4 Qxc4 30. Bf3 hxg4 31. hxg4 Qxb4 32. Bxc6 {[#]} Re5 $5 {
Setting the trap...} 33. Rd8+ {and Magee falls into it!} (33. Rxe3 Rxe3 34.
Qxe3 Qxg4 $11 {is tatamount to a draw offer.}) 33... Kh7 34. Qh2+ Rh5 $3 {
A fantastic move by Ohman!} (34... Nh5 35. Rh8+ Kxh8 36. Qxe5+ Kh7 37. gxh5
Qe1+ $11) 35. gxh5 Qe1+ 36. Kg2 (36. Qg1 Qh4+) 36... Qf2+ 37. Kh3 Qxh2+ 38.
Kxh2 e2 39. hxg6+ Kh6 $1 {Precise to the end.} (39... Kxg6 {lets White escape:}
40. Rd6+ Kg5 41. Rd5+ Kf4 42. Rd4+ Ke3 43. Re4+ $11) 40. Rh8+ Kg5 41. Rh7 e1=Q
42. Rxg7 Qe5+ 0-1

[Event "Omaha City"]
[Site "?"]
[Date "1954.??.??"]
[Round "4"]
[White "Ohman, Howard"]
[Black "Spence, Jack"]
[Result "1-0"]
[Annotator "Hartmann, John"]
[SetUp "1"]
[FEN "8/p4kpp/1p6/4p3/r6P/P1P1p1P1/R3K3/8 w - - 0 41"]
[PlyCount "37"]
[EventDate "1954.??.??"]
[SourceDate "2010.06.14"]

{[#]} 41. Kxe3 Ke6 42. Ra1 Kd5 43. Rd1+ Kc4 44. Rd7 Kxc3 45. Rxg7 Rxa3 46. Rxh7
a5 47. h5 Kc2+ 48. Kf2 e4 49. Rf7 Rc3 50. h6 Rc6 51. h7 Rh6 52. g4 a4 53. g5
Rh2+ 54. Ke3 Rh3+ 55. Kxe4 a3 56. g6 a2 57. Ra7 Kb2 58. Rxa2+ Kxa2 59. g7 1-0

[Event "City Tournament"]
[Site "?"]
[Date "1955.04.07"]
[Round "?"]
[White "Ohman, Howard"]
[Black "Magee, Lee"]
[Result "0-1"]
[ECO "E70"]
[Annotator "Hartmann, John"]
[PlyCount "58"]
[EventDate "1955.??.??"]
[SourceDate "2010.06.14"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. e5 Ne8 6. Bd3 c5 7. dxc5 Bxe5 8.
Nge2 Nc6 9. Bh6 Bg7 10. Qd2 d6 11. cxd6 Nxd6 12. Bxg7 Kxg7 13. Nd5 Ne5 14. Qc3
f6 15. O-O-O Nxd3+ 16. Rxd3 Bf5 {[#]} 17. Nd4 $1 Bd7 (17... Bxd3 $2 18. Ne6+)
18. b3 b5 19. Nf4 Qc8 20. Re1 e5 21. Nde6+ Bxe6 22. Rxd6 Bf7 23. Rxf6 bxc4 (
23... Kxf6 $2 24. Qxe5#) 24. Qxe5 Kg8 25. b4 c3 26. Re3 Qc4 27. Nh5 Qf1+ 28.
Kc2 (28. Re1 $1 $18) 28... Rfd8 29. Rxg6+ $4 {"AWFUL!!"} (29. Rd6 $1 $13) 29...
Bxg6+ 0-1

[Event "Midwest Open"]
[Site "?"]
[Date "1962.10.20"]
[Round "4"]
[White "Liepnieks, Alexander"]
[Black "Ohman, Howard"]
[Result "0-1"]
[ECO "A84"]
[Annotator "Hartmann, John"]
[PlyCount "116"]
[EventDate "1962.??.??"]
[SourceDate "2010.06.14"]

1. d4 f5 2. c4 Nf6 3. Nf3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O c5 7. d5 exd5 8. Ne1 d6
9. Nc3 Qc8 10. cxd5 Be7 11. Nd3 Na6 12. Nf4 Nc7 13. e4 fxe4 14. Nxe4 Qf5 15.
Re1 Nxe4 16. Bxe4 Qf6 17. Bd2 O-O-O 18. Bc3 Qf7 19. Ne6 Nxe6 20. dxe6 Qf8 21.
Bxb7+ Kxb7 22. Qd5+ Kb8 23. a4 Rc8 24. a5 Qd8 25. axb6 Qxb6 26. Ra3 Qc6 27.
Qxc6 Rxc6 28. Bxg7 Rg8 29. Bc3 h5 30. Kh1 d5 31. Be5+ Kb7 32. Rb3+ Rb6 33.
Rxb6+ axb6 34. h4 Rg6 35. Bf4 Kc6 36. Kh2 d4 37. Bg5 Rg7 38. Bf4 Bf6 39. Bg5
Be7 40. Bf4 b5 41. Kh3 d3 42. f3 c4 43. g4 hxg4+ 44. fxg4 b4 45. h5 c3 46. bxc3
bxc3 47. Rc1 c2 48. g5 Bxg5 49. Bxg5 Rxg5 50. Kh4 Rc5 51. e7 Re5 52. h6 Rxe7
53. Kg5 Kd5 54. Kf6 Ra7 55. Re1 d2 56. Re5+ Kd4 57. Re7 Rxe7 58. Kxe7 d1=Q 0-1

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.07"]
[Round "1.2"]
[White "Koneru, Humpy"]
[Black "Yip, Carissa"]
[Result "1-0"]
[ECO "E73"]
[WhiteElo "2580"]
[BlackElo "2412"]
[Annotator "Abrahamyan, Tatev"]
[PlyCount "79"]
[EventDate "2020.??.??"]
[WhiteTeam "India"]
[BlackTeam "United States"]
[WhiteTeamCountry "IND"]
[BlackTeamCountry "USA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Be3 e5 7. d5 Na6 8. h4 {
not the most common move in the position, but we see this h-pawn push quite a
lot these days} Nc5 9. Qc2 c6 10. h5 cxd5 11. cxd5 Qa5 12. Bd2 Bd7 (12... Nxh5
{has actually been played before in a game between Grandmasters Blebaum and
Markos in 2017, but this capture requires a lot of bravey if Black is unaware
of this game} 13. a3 (13. Bxh5 {the engines actually don't like this capture!}
gxh5 14. Rxh5 Qa6 {the whole idea for Black is to take control of the light
squares and take advantage of being ahead in development}) 13... Qb6 14. b4 Nd7
{was played in the game which eventually ended in a draw}) 13. h6 $1 {a very
AlphaZero-esque move. Black will have a long term problem with the bishop on
h8 and the king} Bh8 14. Nh3 Qc7 15. Ng5 Rac8 16. Qd1 a5 17. O-O Qd8 18. Rb1
Ne8 19. b3 f6 $2 {a sign of impatience} (19... Bf6 20. Nf3 Be7 {feels like the
correct way for Black to play, freeing the bishop and preparing for the f5
break}) 20. Ne6 $3 {[#] Koneru shows great positional understanding with this
sacrifice} Nxe6 21. dxe6 Bxe6 22. Bc4 $1 {this is the whole point. White
exchanges the light squared bishops, this getting a grip on the d5 square and
getting access to the vulnerable black king} Nc7 (22... Bxc4 23. bxc4 Rxc4 {
the greedy capture loses immediately} 24. Qb3 {the pin is devastating} d5 25.
Nxd5 Nd6 26. Nb6 $18) 23. Nb5 Qd7 24. Nxc7 Bxc4 25. bxc4 Qxc7 26. Qb3 {Koneru
goes for the endgame but it also makes sense for her to keep the queens on the
board} ({for example:} 26. Be3 Qxc4 27. Rxb7 {looks very dangerous for Black
due to the weak king and the useless h8 bishop}) 26... Qxc4 27. Bxa5 $6 (27.
Qxb7 Qf7 (27... Rc7 28. Qb6 {and all of Black's pawns are hanging}) 28. Bxa5 {
White enters the same endgame with an extra pawn}) 27... Qxb3 28. Rxb3 Rf7 29.
Rfb1 Rb8 $2 {too passive. Yip needed to part with the pawn and seek
counterplay immediately} (29... f5 30. Rxb7 Rxb7 31. Rxb7 Rc1+ 32. Kh2 Bf6 $13)
30. Bd2 $1 {excellent idea by Koneru. Now that the b8 rook is pinned, the a
pawn will march down the board, eventually corraling the b7 pawn [#]} f5 (30...
Ra8 {now it's too late for Black to free herself} 31. Rxb7 Rxa2 32. Rb8+ Rf8
33. Rxf8+ Kxf8 34. Rb8+ Kf7 35. Be3 $1 $18 {and the bishop on h8 is trapped!})
31. a4 fxe4 32. a5 Rbf8 (32... Ra8 33. Rxb7 Rxb7 34. Rxb7 {this endgame
doesn't offer too much hope for Black either. The passed a5 pawn is defended
allowing the rook to collect the d6 pawn, while Black's bishop or king won't
be able to join the game anytime soon. For example:} Bf6 35. Rd7 Bd8 36. a6 $1
Bb6 37. Rg7+ Kh8 38. Rb7 Bd4 39. Be3 $18 {after forcing the exchange of
bishops, White will simply play a7 and Rb8}) 33. Rxb7 Rxf2 {optically, Black
gets some counterplay but the position is hopeless} 34. Bb4 e3 35. Bxd6 Re8 36.
Rb8 Rxb8 37. Rxb8+ Kf7 38. Rxh8 Rb2 39. Kf1 Ke6 40. Bc5 1-0

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.08"]
[Round "2.1"]
[White "Muzychuk, Mariya"]
[Black "Koneru, Humpy"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2552"]
[BlackElo "2580"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "r2q1rk1/p4pp1/1p4b1/2ppP2p/5R1P/2PP1Q2/P4PP1/2B1R1K1 w - - 0 17"]
[PlyCount "35"]
[EventDate "2020.??.??"]
[WhiteTeam "Ukraine"]
[BlackTeam "India"]
[WhiteTeamCountry "UKR"]
[BlackTeamCountry "IND"]

{[#]} 17. g4 $1 {White has a nice grip on the center and more active pieces.
It's the right time to start a flank attack} Qxh4 18. Qg2 {threatening to trap
the queen with g5} Qe7 $2 (18... Qg5 {the right retreat for the queen as she
will keep an eye on the g4 pawn} 19. e6 Rfe8 (19... fxe6 $4 20. Rxf8+ Rxf8 21.
Bxg5 $18) 20. Bd2 $13) 19. gxh5 Bxh5 20. Re3 {bringing another piece into the
attack} Rfe8 21. Qh2 g6 {there is no going back after this move, but Rh4 was a
big threat. The rest of the game demonstrates perfectly how strong opposite
colored bishops are during an attack} 22. Rf5 Bg4 (22... gxf5 23. Qxh5 f4 24.
Qg4+ Kf8 25. Qxf4 {the black king won't survive this attack for too long}) 23.
Rf4 Bh5 {pro tip: always repeat the position once!} 24. e6 $1 {by giving up
the pawn, White closes the e-file making it impenetrable for the blakc queen
and rook. At the same time, the Black king is even weaker} fxe6 25. Rg3 Kh7 (
25... Qh7 26. Rh4 Kf7 27. Rg5 Re7 28. Qd6 {Black is paralyzed. Once the c1
bishop joins the attack, White's attack will be unstoppable}) 26. Rh4 Qf7 27.
Rg5 Rg8 28. Kf1 ({Of course} 28. Rhxh5+ $2 {doesn't work} gxh5 {and the g5
rook is pinned}) 28... Qf3 {[#]} 29. Rhxh5+ gxh5 30. Qc7+ $1 Kh8 31. Qe5+ {
centralizing the queen} Kh7 32. Rxh5+ Kg6 33. Qg5+ Kf7 34. Rh7+ 1-0

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.10"]
[Round "4.5"]
[White "Yip, Carissa"]
[Black "Kosteniuk, Alexandra"]
[Result "0-1"]
[ECO "C43"]
[WhiteElo "2412"]
[BlackElo "2504"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "2r4k/4b1pp/6q1/1B2Pp2/1P2bP2/R2p3P/3B1QP1/7K b - - 0 46"]
[PlyCount "15"]
[EventDate "2020.??.??"]
[WhiteTeam "United States"]
[BlackTeam "Russia"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "RUS"]

{[#]} 46... Bh4 $1 47. Qf1 (47. Qxh4 Qxg2#) 47... Qg3 48. Ra2 Qxh3+ 49. Kg1 Qg3
50. e6 Bf6 51. Be1 Bd4+ 52. Bf2 {while Black has several winning moves, she
chooses the prettiest} Bxg2 $3 {[#] White resigned in view of} 53. Qxg2 Rc1#
0-1

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.11"]
[Round "5.2"]
[White "Lagno, Kateryna"]
[Black "Ju, Wenjun"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2552"]
[BlackElo "2583"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "1r4k1/p3npp1/2n1bq1p/2Q5/8/P3BN1P/1r2BPP1/2R1R1K1 b - - 0 22"]
[PlyCount "43"]
[EventDate "2020.??.??"]
[WhiteTeam "Russia"]
[BlackTeam "China"]
[WhiteTeamCountry "RUS"]
[BlackTeamCountry "CHN"]

{[#]} 22... Bxh3 $1 {changing the flow of the game. This must have felt like a
cold shower for Lagno who was already getting low on time} 23. gxh3 (23. Bd2 $1
{is the correct continuation, threatening Bc3} Qg6 24. Nh4 Qe4 {Ju saw this
line and thought that it's fine for Black, but the engines find an advantage
for her opponent after} 25. Bf3 Qxh4 26. Rc4 Qxc4 (26... Qf6 27. Bc3 Qg6 28.
Bxb2 Rxb2 29. Bxc6 $18) 27. Qxc4 Rxd2 28. gxh3 $16) 23... Rxe2 24. Rxe2 Qxf3
25. Rec2 Qxh3 {Black's compensation for the exchange are the two pawns and the
permanently weak white king. The World Champion outplayed her opponent in the
remainder of the game} 26. Qd6 Rd8 27. Qg3 Qe6 28. Rc5 Nd4 29. Bxd4 Rxd4 30.
Re5 Qd7 31. Qf3 Ng6 32. Re3 Rg4+ 33. Kf1 Qb5+ 34. Ke1 Rg1+ 35. Kd2 Qb2+ 36. Rc2
Qd4+ 37. Rd3 Qa1 38. Re3 Rf1 39. Re8+ Kh7 40. Re4 f6 41. Qf5 Rg1 42. Re3 Rd1+
43. Ke2 Rd5 $1 {the rook cannot be taken because of the fork on f4. There is
no way to save the queen and stop the checkmate on d1} 0-1

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.11"]
[Round "5.1"]
[White "Dzagnidze, Nana"]
[Black "Koneru, Humpy"]
[Result "0-1"]
[ECO "D58"]
[WhiteElo "2515"]
[BlackElo "2580"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "3Q4/1b6/p1q3k1/1p3pp1/1P2p3/P3K1P1/4NP2/8 b - - 0 45"]
[PlyCount "39"]
[EventDate "2020.??.??"]
[WhiteTeam "Georgia"]
[BlackTeam "India"]
[WhiteTeamCountry "GEO"]
[BlackTeamCountry "IND"]

{[#]} 45... Kh5 {Black has made some progress in the last few moves and is now
trying to activate her king and penetrate the kingside} (45... Qd7) 46. Qd1 (
46. g4+ $3 {using the same idea in the game, except now the black king can't
run back} Kxg4 (46... fxg4 47. Ng3+ Kg6 48. Qg8+ Kf6 49. Nh5+ Ke7 50. Qxg5+ $11
) 47. Qd1 $1 {Black will more likely have to settle for a draw} f4+ (47... Qb6+
48. Nd4+ Kh4 49. Qh1+ Kg4 50. Qd1+ {with a perpetual}) (47... Kh5 $4 48. Nd4+
$18) 48. Nxf4+ Kf5 49. Ne2 {Koneru remains up the pawn but has lost the
important f5 pawn, thus unable to create a passer}) 46... Kg6 47. Qd8 Kh5 48.
Qd1 {unlike in the line with g4, now Black has this option} Qb6+ 49. Nd4+ Kg6
50. Qd2 Bd5 51. Qc3 Bc4 52. Kd2 f4 {Black is making more and more progress,
activating the bishop and pushing her pawns forward. In addition, the d4
knight can't move due to the f2 pawn being under attack by the black queen} 53.
Ke1 Qf6 {pinning from the other diagonal} 54. a4 {desperate move, but it's
hard to suggest an alternative} (54. gxf4 gxf4 {opens the g file and allows
for the queen to penetrate via g5}) (54. Kd2 fxg3 55. fxg3 Qf2+ 56. Kc1 Bd3 {
picking up the g3 pawn}) 54... fxg3 55. fxg3 Qf1+ 56. Kd2 bxa4 {after grabbing
another pawn, the rest is just a matter of time} 57. Nc2 Qd3+ 58. Qxd3 exd3 59.
Ne3 Bb5 60. Kc3 Kf6 61. Ng4+ Kf5 62. Nf2 a3 63. Kb3 d2 64. Kxa3 Be2 0-1

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.11"]
[Round "5.5"]
[White "Krush, Irina"]
[Black "Yip, Carissa"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2422"]
[BlackElo "2412"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "2r2r2/p7/1p4pk/2b1p3/5p2/1BP3P1/PP2QPK1/8 w - - 0 36"]
[PlyCount "24"]
[EventDate "2020.??.??"]
[WhiteTeam "United States"]
[BlackTeam "United States"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "USA"]

{[#]} 36. Qxe5 $2 {the greedy pawn grabs allows for the rooks to get into the
game and go after the white king} (36. Qg4 fxg3 37. Qh3+ Kg7 38. Qd7+ {Krush
already needs to go for a perpetual}) 36... Rce8 $1 37. Qd5 f3+ $1 38. Kh3 Bxf2
{the f3 pawn is extremely dangerous. With two more moves remaining to make
time control, it's hard to imagine how White won't just collapse} 39. Bd1 Rd8
40. Qb3 Bc5 {and the pawn will march forward} 41. Qa4 Rxd1 42. Qxd1 f2 43. Qc1+
Kg7 44. Qf1 Re8 45. Qd3 Re1 46. Qd7+ Kh6 47. Qd2+ Be3 {the youngster was
finally able to put the nightmare behind her and gain some confidence} 0-1

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.13"]
[Round "6.1"]
[White "Koneru, Humpy"]
[Black "Kosteniuk, Alexandra"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2580"]
[BlackElo "2504"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "8/7p/1K2k1p1/4p3/8/P1n1N3/6PP/8 w - - 0 47"]
[PlyCount "29"]
[EventDate "2020.??.??"]
[WhiteTeam "India"]
[BlackTeam "Russia"]
[WhiteTeamCountry "IND"]
[BlackTeamCountry "RUS"]

{[#]} 47. Kc5 Ne4+ 48. Kb5 Nd6+ 49. Kc5 Ne4+ 50. Kb4 {White's distant passed
pawn gives her excellent winning chances as it will serve as a distraction,
while both of White's pieces are close to the passed e pawn, preventing it
from moving} Nd6 (50... Kd6 51. a4 Kc6 52. Nc4 {already loses the pawn} Kd5 53.
a5 g5 {Black needs to have the Nc3 check at her disposal to survive} (53... Nf6
$2 54. Kb5 $18) 54. a6 Kc6 55. Ka5) 51. Nc4 Nf5 {costly but understandable
mistake} (51... Nxc4 {the pawn endgame is of course lost} 52. Kxc4 Kd6 53. a4
Kc6 54. a5 e4 55. Kd4 Kb5 56. Kxe4 Kxa5 57. Ke5 {picking up the rest of the
pawns}) (51... Nb7 $142 {as it keeps the white king out} 52. a4 Kd5 53. a5 Nxa5
$3 54. Nxa5 Kd4 {Black draws miraculously by shouldering the White king} 55.
Nc6+ Kd5 56. Nd8 Kd4 57. Kb3 Kd3 {White can't make progress!}) 52. Kc5 h5 53.
Nd2 $1 {Koneru shows good technique and a lot of patience} (53. a4 e4 {and
things get messy}) 53... Nd6 54. a4 Nb7+ 55. Kc6 Nd8+ 56. Kc7 Ke7 57. a5 Ne6+
58. Kc6 Kd8 59. a6 Kc8 60. a7 Nd4+ 61. Kb6 1-0

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.13"]
[Round "6.5"]
[White "Yip, Carissa"]
[Black "Gunina, Valentina"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2412"]
[BlackElo "2461"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "7Q/6rp/2p2kp1/3n1p2/2q5/6PB/5P1P/4R1K1 w - - 0 37"]
[PlyCount "35"]
[EventDate "2020.??.??"]
[WhiteTeam "United States"]
[BlackTeam "Russia"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "RUS"]

{[#]} 37. Bxf5 $3 {even though the engine offers a much stronger continuation
for White, I have to give this move a double exclam for the aesthetics} (37.
Qd8+ Re7 38. Bg2 $1 $18 {picking up at least a piece as there is no way to
defend the rook. For example:} Qb4 39. Qf8+ Rf7 (39... Kg5 40. h4+ Kg4 41. Qh6
$3 Rxe1+ 42. Kh2 {and it's impossible to stop both Qg5 and f3 checkmates}) 40.
Re6+ $3 Kxe6 41. Bxd5+ {picking up the queen the next move}) 37... Qc3 {
Gunina finds the only way to keep fighting with seconds on her clock} (37...
gxf5 38. Qf8+ Kg6 (38... Rf7 39. Qh6#) 39. Re6+ Kh5 40. Qxf5+ Rg5 41. Qh3+ Qh4
42. Qxh4#) (37... Kxf5 38. Qxg7 $18) 38. Qf8+ Kg5 39. h4+ Kh6 40. Re6 Qa1+ $4 {
Understandably, Black goes for a check to make time control but this move
gives away the game immediately} (40... Qb4 {offered better resistence, as it
kicks out the queen from f8 which will free the pinned g7 rook}) 41. Kg2 Qa7
42. Be4 Qd7 43. Qf5 {Black simply can't move} Qd8 (43... Rf7 44. Rxg6+ hxg6 45.
Qxg6#) 44. Rxc6 $18 Ne3+ 45. fxe3 Qd2+ 46. Qf2 Rd7 47. Qxd2 Rxd2+ 48. Kf3 Rd1
49. Rc7 Rf1+ 50. Ke2 Rf8 51. g4 Rh8 52. Rf7 Rg8 53. g5+ Kh5 54. Rf4 1-0

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.15"]
[Round "8.2"]
[White "Koneru, Humpy"]
[Black "Gunina, Valentina"]
[Result "1-0"]
[ECO "D48"]
[WhiteElo "2580"]
[BlackElo "2461"]
[Annotator "Abrahamyan, Tatev"]
[PlyCount "69"]
[EventDate "2020.??.??"]
[WhiteTeam "India"]
[BlackTeam "Russia"]
[WhiteTeamCountry "IND"]
[BlackTeamCountry "RUS"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3
Bb7 9. O-O a6 10. e4 c5 11. d5 c4 12. Bc2 Qc7 13. dxe6 fxe6 14. Ng5 {all of
this is well known theory in the Semi-Slav} Qc6 $2 {this is where both Karpov
and Gunina erred} (14... Nc5 15. e5 Qxe5 16. Re1 Qd6 17. Qxd6 Bxd6 18. Be3 $13
{is the main continuation}) 15. Qf3 h6 16. Qh3 {[#]} hxg5 (16... Nc5 {Karpov
tried to hang on to the e6 pawn} 17. Be3 Bc8 18. e5 hxg5 19. Qxh8 Bb7 20. f3
Nfd7 21. Bxg5 Nxe5 22. Rad1 {and White won on move 36:1-0 (36) Koneru,H (2545)
-Karpov,A (2668) Cap d'Agde 2006}) 17. Qxh8 Ne5 18. Bxg5 Nf7 19. Qh4 Be7 20.
Rad1 Qc5 21. e5 $1 {blasting the position wide open} Nxe5 22. Bxf6 Bxf6 23.
Qh5+ Ke7 24. Be4 Bc6 25. Bxc6 Qxc6 26. Rfe1 {White's win is quite straight
forward from here on} Nd3 27. Nd5+ Kf8 28. Nxf6 gxf6 29. Qh8+ Kf7 30. Qh7+ Ke8
31. Re3 Nf4 32. Qg8+ Ke7 33. Qg7+ Ke8 34. Rd4 c3 35. bxc3 1-0

[Event "Cairns Cup"]
[Site "chess24.com"]
[Date "2020.02.16"]
[Round "9.2"]
[White "Kosteniuk, Alexandra"]
[Black "Ju, Wenjun"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2504"]
[BlackElo "2583"]
[Annotator "Abrahamyan, Tatev"]
[SetUp "1"]
[FEN "5k2/p3bp2/3Nb3/1P2P3/2Np2pp/1P6/r4PPP/4RK2 b - - 0 30"]
[PlyCount "53"]
[EventDate "2020.??.??"]
[WhiteTeam "Russia"]
[BlackTeam "China"]
[WhiteTeamCountry "RUS"]
[BlackTeamCountry "CHN"]

{[#]} 30... h3 $1 {great move that creates a long term targets on the kingside
and allowing for the bishops to penetrate.} 31. gxh3 gxh3 32. Re2 Ra1+ 33. Re1
Rxe1+ 34. Kxe1 Bg5 $1 {going after the h2 pawn} 35. Ne4 Bf4 36. Ng3 d3 37. Nf1
(37. Ne3 Bxb3 38. Kd2 Bc2 $19 {and White is stuck}) 37... Ke8 38. Nb2 Bf5 39.
Ng3 d2+ 40. Kd1 Bg4+ 41. Kc2 Bxe5 42. Nd1 (42. Kxd2 $4 Bxb2 $19) 42... Bf4 43.
Nf1 Be2 44. Ng3 Bf3 45. Nf1 Be4+ 46. Kc3 Bg2 47. Ng3 Bf3 {[#] nice tempo gain
by Black! She will simply bring her king in and collect all of White's pawns
as her bishops will continue tying down the knights} 48. Kc2 Kd7 49. Nc3 Kc7
50. Nf1 Kb7 51. b4 Kb6 $1 {provoking b4 will help Black} 52. Nxd2 Bg2 53. Nde4
(53. Nf1 Bxf1 54. Nd5+ Kxb5 55. Nxf4 Kxb4 $19 {and now we see why it's useful
for Black to have the pawn on b4!}) 53... Bxh2 54. Nd5+ Kxb5 55. Nec3+ Kc6 56.
b5+ Kb7 0-1

[Event "Cairns Cup"]
[Site "?"]
[Date "2020.02.07"]
[Round "?"]
[White "Muzychuk, Mariya"]
[Black "Ju, Wenjun"]
[Result "1/2-1/2"]
[ECO "C42"]
[Annotator "Rambaldi, Francesco"]
[PlyCount "34"]
[EventDate "2019.??.??"]

{[%evp 0,34,38,15,28,15,42,-6,29,29,29,29,29,29,46,23,14,-6,-4,-3,19,7,8,0,29,
14,12,12,17,21,32,14,25,25,25,25,25] As one would expect from a top tournament,
the Cairns Cup featured many interesting opening ideas. In the early rounds of
the tournament, a few games demonstrated some important developments in the
Petroff Defense, a staple in the repertoire of top players. The Petroff has
enjoyed a boost in popularity in recent years, partly due to Fabiano Caruana's
endorsement in both the Candidates tournament and the World Championship match.
Nevertheless, White players have found new ways to pose problems for Black. In
round 1, Mariya Muzychuk employed a solid setup and played an unusual move
order.} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 {With this move,
White is looking for a small advantage in a very solid position. The game is
quite slow, and both players can continue their development in various ways.
However, each move order presents its own subtleties.} Nxc3 6. dxc3 Be7 7. Be3
Nc6 8. Qd2 Be6 9. O-O-O Qd7 {Both players have followed the most popular
continuation until now, but here Muzychuk comes up with a relatively new idea.}
10. h3 $5 {[#] White introduces the idea of expanding with g4 and keeps his
options open. Black now has a few options to choose from:} ({The main line
continues with} 10. Kb1 Bf6 11. h4 O-O-O 12. Nd4 {. White trades the knights
and seeks to gain space on the kingside by advancing his pawns. Black is in a
good position to defend, however, as he has no weaknesses.}) 10... h6 {This is
a pragmatic approach: Black awaits to see White's idea before committing to a
plan.} (10... O-O-O $6 {is imprecise since after} 11. Nd4 $1 $14 {Black cannot
trade the knights (after 11...Nxd4 12.Qxd4 White has a double-attack on the g7
and a7 pawns) and is hence forced to give up the light-squared bishop.} Nxd4
12. Qxd4) (10... Bf6 11. g4 h6 12. Bg2 O-O-O $13 {is playable, and leads to an
interesting positional battle.}) 11. Kb1 O-O-O 12. Nd4 Nxd4 13. Bxd4 Rhg8 14.
Qe3 a6 15. c4 Kb8 16. Qc3 g6 17. Be2 Qc6 $13 {Although White had a slight edge
due his space advantage and more active pieces, Ju comfortably held a draw.}
1/2-1/2

[Event "Cairns Cup"]
[Site "?"]
[Date "2020.02.08"]
[Round "?"]
[White "Muzychuk, Mariya"]
[Black "Koneru, Humpy"]
[Result "1-0"]
[ECO "C43"]
[Annotator "Rambaldi, Francesco"]
[PlyCount "25"]
[EventDate "2019.??.??"]

{[%evp 0,25,15,15,15,15,42,42,21,21,21,11,21,-5,-5,-5,11,11,11,3,1,1,11,3,3,3,
3,-19] After going for a solid approach in round 1, Muzychuk chose a more
ambitious variation in round 2. Her opening preparation was fruitful as she
went on to impose a defeat to the eventual winner of the tournament.} 1. e4 e5
2. Nf3 Nf6 3. d4 $5 {This is the latest attempt to trouble Black in the
Petroff, and it will likely keep going up in the popularity rankings until
Petroff players find an effective response.} Nxe4 4. Bd3 d5 (4... Nc6 $5 {
is worth mentioning: Black uses some tactics to delay or avoid playing ...d5.
White has a few continuations.} 5. Nxe5 (5. Bxe4 d5 $1 {is the point, and 6.
Bd3 is met by 6... e4.} 6. Bd3 e4) (5. dxe5 Nc5 $1 6. Nc3 Nxd3+ 7. Qxd3 d6 $11
{Black is behind in development, but White cannot avoid simplifications.}) 5...
Nxe5 6. dxe5 Nc5 (6... d5 7. exd6 Nxd6 8. O-O Be7 9. Nc3 $14 {gave White an
edge in 1-0 Nakamura - Duda, Saint Louis 2019, due to his more active position.
}) 7. Bc4 d6 8. Qf3 Ne6 9. exd6 Bxd6 10. Nc3 O-O 11. Be3 Be5 $1 $13 {This was
played in the recent game ½-½ Predke - Bai, Moscow 2019, and may well be
Black's best shot at equality.}) 5. Nxe5 {Although the position is very
symmetrical, White's extra tempo forces Black to proceed with caution.} Nd7 (
5... Bd6 6. O-O O-O 7. c4 c5 $5 {has also been tried, but I do not fancy
Black's prospects after either 8. cxd5 Nf6 9.Bg5 or 8.Nc3!?. Perhaps, however,
the computer will demonstrate that Black can hold without excessive strain.} 8.
cxd5 (8. Nc3) 8... Nf6 9. Bg5) 6. Nc3 $5 {White trades the e4-knight and opens
the position to exploit his slight lead in development.} (6. O-O Nxe5 7. dxe5
Nc5 8. Be3 c6 9. f4 Nxd3 10. Qxd3 g6 11. Nc3 b6 12. Rad1 Bg7 13. b4 $1 $14 {
gave White a slight edge in 1-0 Caruana - Yu, Wijk aan Zee 2020, and will
certainly see more games.}) 6... Nxc3 7. bxc3 Bd6 ({This position was repeated
later in the tournament in the game 0-1 Yip - Kosteniuk, Cairns Cup 2020, and
Black continued with} 7... Nxe5 8. dxe5 Be7 9. O-O O-O 10. Be3 Be6 11. f4 f5 {
The position is strategically complex: White has more space but a worse pawn
structure, and the center is blocked. In the game, Black managed to expand on
the queenside and generate counterplay.} 12. Rb1 (12. a4 $5 {as in 1-0
Vitiugov - So, Khanty-Mansiysk 2019, is probably a better try to contain
Black's queenside expansion.}) 12... b6 13. Be2 c6 14. Bf3 b5 15. Qd3 a5 16.
Qd2 Qd7 17. Ra1 Ba3 18. Rfb1 Qe7 $15 {Black capitalized on White's
indecisiveness and was clearly in the driver's seat. Kosteniuk went on to win
a fine a game.}) 8. O-O O-O 9. Re1 Bxe5 10. dxe5 Nc5 {[#] Black has given up
the bishop pair to ease the pressure and hopes to eliminate White's powerful
d3-bishop. In the featured game, Muzychuk allowed her opponent to do so to
expedite her kingside attack. However, I prefer 11.Bf1, keeping the bishop and
maintaining a firm grip on the center. If White can make good use of his
bishop pair, he will have a small but lasting advantage.} 11. Rb1 (11. Bf1)
11... Nxd3 12. cxd3 b6 (12... d4 $1 {would have been a critical improvement.
The idea is to cut off White's b1-rook from the kingside and open the position
so that the c8-bishop can swiftly come into the game.}) 13. Rb4 $1 $36 {
Although Black's position looks solid, White's kingside initiative is quite
insidious and Muzychuk went on to win a brilliant attacking game.} 1-0

[Event "Cairns Cup"]
[Site "?"]
[Date "2020.02.09"]
[Round "?"]
[White "Lagno, Kateryna"]
[Black "Muzychuk, Mariya"]
[Result "1/2-1/2"]
[ECO "C42"]
[Annotator "Rambaldi, Francesco"]
[PlyCount "35"]
[EventDate "2019.??.??"]

{[%evp 0,35,18,33,33,15,29,29,29,29,29,3,3,3,38,38,58,47,47,52,70,37,84,32,15,
15,15,18,18,18,18,18,18,41,41,49,4,47] In round 3, it was Muzychuk's turn to
defend Black's chances in the Petroff. Whereas the previous games featured
rather positional ideas, the present one saw sharp developments from the
opening.} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O
O-O 8. c4 c6 9. Re1 Bf5 10. Qb3 $5 {This variation has come to light recently
as top players have been searching for any advantage in the forcing lines that
ensue.} Nd7 $5 (10... Qd7 {is a more popular reply and is more in line with
Black's attitude in the Petroff: equalizing through precise but somewhat
passive play. Many games have continued with} 11. Nc3 Nxc3 12. Bxf5 Qxf5 13.
Qxb7 Qd7 14. Qxd7 Nxd7 15. c5 Bxh2+ 16. Nxh2 Ne4 $13 {and this endgame has
been a hot topic of debate. However, Muzychuk had other plans for this game.})
(10... Na6 11. cxd5 Nac5) 11. cxd5 (11. Qxb7) 11... Ndc5 $5 {This position is
generally reached via the 10...Na6 11.cxd5 Nac5 move order. The present move
order gives White the additional option of playing 11.Qxb7.} 12. dxc5 Nxc5 13.
Bxf5 $1 Nxb3 14. axb3 cxd5 15. Nc3 {[#] We have reached a complex middlegame:
White has three pieces for the queen and a very harmonious position. If White
can successfully complete his development, Black will face an uphill battle.}
Qb6 16. Be3 Qxb3 17. Nd4 Qc4 {Lagno continued with 18.Ra4, but perhaps} 18. Ra4
(18. g3) 1/2-1/2

[Event "URS blitz"]
[Site "URS blitz"]
[Date "1975.??.??"]
[Round "?"]
[White "Mikhail Tal"]
[Black "Tigran Vartanovich Petrosian"]
[Result "1-0"]
[ECO "C03"]
[Annotator "Pandolfini, Bruce"]
[PlyCount "40"]
[EventDate "1975.??.??"]
[EventType "blitz"]

1. e4 e6 2. d4 d5 3. Nd2 Ne7 {[#]} 4. Ngf3 (4. Bd3) 4... Nd7 5. Bd3 c5 6. exd5
Nxd5 7. O-O cxd4 8. Nb3 (8. Nxd4) 8... Nc5 9. Bb5+ Bd7 10. Bxd7+ (10. Nbxd4)
10... Qxd7 11. Qxd4 Qa4 12. c4 (12. Nxc5 Qxd4 13. Nxd4 Bxc5) (12. Be3) 12...
Nxb3 13. axb3 Qxa1 14. cxd5 Qa6 15. Re1 (15. dxe6) 15... O-O-O 16. Bf4 (16.
Qc3+ Kb8 17. Bf4+) 16... Rxd5 17. Rc1+ Kd8 18. Bg5+ Ke8 (18... Be7 19. Qxg7) (
18... f6 19. Bxf6+ gxf6 20. Qxf6+) 19. Ne5 (19. Rc8+) 19... b6 (19... Rxd4 20.
Rc8+) (19... Bc5) (19... f6) 20. Qa4+ Qxa4 1-0

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM I"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "2r5/8/5n2/8/3k4/5R2/3PP1B1/4K3 b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Rc1+ 2. Kf2 Ne4# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM II"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "1r6/8/8/8/2k5/5Nn1/2P1R3/3K4 b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Rb1+ 2. Kd2 Nf1# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM III"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "2r2q2/8/8/3R3b/1P2n3/Q3P3/5Pk1/4K3 b - - 0 1"]
[PlyCount "1"]

{[#]} 1... Qxf2# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM IV"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "5b2/4q3/8/8/1P4b1/Q3P3/5Bk1/R3K3 b Q - 0 1"]
[PlyCount "1"]

{[#]} 1... Qxb4+ 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM V"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "3r3k/5R1p/q5pQ/8/8/2n5/5PPP/5BK1 b - - 0 1"]
[PlyCount "3"]

{[#]} 1... Qxf1+ 2. Kxf1 Rd1# 0-1

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "PROBLEM VI"]
[Black "Mating Net"]
[Result "0-1"]
[Annotator "Pandolfini, Bruce"]
[SetUp "1"]
[FEN "4r2k/8/8/4n3/8/7q/1P2BP2/3QK1R1 b - - 0 1"]
[PlyCount "1"]

{[#]} 1... Nf3# 0-1

[Event "Hot Summer Swiss"]
[Site "?"]
[Date "2019.07.20"]
[Round "?"]
[White "George Kvakovszky"]
[Black "Nitin Baligar"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1800"]
[BlackElo "1504"]
[Annotator "Kvakovszky, George"]
[PlyCount "65"]
[EventDate "2019.??.??"]
[SourceDate "2020.04.01"]

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Bf5 5. g4 Bd7 (5... Bg6) 6. g5 Nh5 7. f4
g6 8. Be2 Bf5 9. Bxh5 gxh5 10. Qxh5 (10. Be3) 10... Qxd4 11. Nge2 Qd7 (11...
Qc5) 12. Be3 Bg6 13. Qh4 Nc6 14. Rd1 Qf5 (14... Qe6) 15. Ng3 Qa5 16. O-O Qb4
17. Nd5 Qa5 {[#]} 18. Bb6 Qxb6+ 19. Nxb6 axb6 20. f5 Ne5 21. Qxe4 e6 (21... Bg7
) 22. Qxe5 Bc5+ 23. Kg2 Rg8 24. fxg6 hxg6 (24... Rxg6) 25. Rxf7 Kxf7 26. Qf6+
Ke8 27. Qxe6+ Be7 28. Qxg8+ Bf8 29. Qxg6+ Ke7 30. Qf6+ (30. Nf5#) 30... Ke8 31.
g6 Bd6 32. Qf7+ Kd8 33. g7 1-0

