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Up Topic The Rybka Lounge / Computer Chess / AlphaZero vs Stockfish: games
- - By Venator (Silver) Date 2018-12-09 07:31 Upvotes 1
Here are two game samples from the newly released AlphaZero papers.

Below I give some games from the TCEC 9 superfinal opening selection. This set produces some amazing and spectacular games.

Parent - - By Venator (Silver) Date 2018-12-09 07:34
Game 1: Frankenstein-Dracula gambit

Of course I was very curious how AlphaZero would play the Frankenstein-Dracula gambit with black. Here is the game, that turns out to be very exciting! AlphaZero holds the advantage all the time, but Stockfish manages to escape to a draw in a 2B vs Q ending.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1/2-1/2"]
[PlyCount "438"]
[EventDate "2018.??.??"]

1. e4 {book} e5 {book} 2. Nc3 {book} Nf6 {book} 3. Bc4 {book} Nxe4 {book} 4.
Qh5 {book} Nd6 {book} 5. Bb3 {book} Nc6 {book} 6. Nb5 {book} g6 {book} 7. Qf3 {
book} f5 {book} 8. Qd5 {book} Qf6 {book} 9. Nxc7+ {book} Kd8 {book} 10. Nxa8 {
book} b6 {book} 11. Qd3 Bb7 12. Ne2 h5 13. a3 Nd4 14. Nxb6 axb6 15. Nxd4 exd4
16. O-O h4 17. c3 Qg5 18. Qh3 d3 19. f4 Qf6 20. Qxd3 h3 21. g3 Ne4 22. Qf3 Kc7
23. d4 Nd2 24. Qxb7+ Kxb7 25. Bd5+ Kc7 26. Bxd2 Qd6 27. Bf3 Qe6 28. Rae1 Qa2
29. Bc1 Bd6 30. Rf2 Rf8 31. Rfe2 g5 32. fxg5 f4 33. g4 Rg8 34. Re8 Qf7 35. Rxg8
Qxg8 36. Be4 Qxg5 37. Bf3 Kd8 38. Kf2 b5 39. Re4 Qf6 40. Bd2 Qf7 41. d5 Kc7 42.
c4 bxc4 43. Rxc4+ Kb8 44. Ke2 Qg6 45. Re4 Bc7 46. Kf1 Qa6+ 47. Be2 Qd6 48. Rxf4
Kc8 49. g5 Bb6 50. Ke1 Kd8 51. b4 Ba7 52. Kd1 Qxd5 53. Rf3 Qe6 54. Ke1 d5 55.
Bf4 Qe4 56. Bd2 Qb1+ 57. Bd1 Qh7 58. Be2 Bg1 59. Bf4 Qe4 60. g6 Qxg6 61. Rxh3
Qb1+ 62. Kd2 Bf2 63. Bd3 Qb2+ 64. Kd1 Bd4 65. Bc1 Qg2 66. Rh6 Be5 67. Rc6 Kd7
68. Rc5 Kd6 69. h4 Qg4+ 70. Kc2 Bd4 71. Ra5 Qc8+ 72. Kd1 Qh3 73. Kc2 Qg2+ 74.
Kb1 Kc7 75. h5 Qh3 76. Kc2 Qh2+ 77. Kb3 Qxh5 78. Bf4+ Kb7 79. Kc2 Qh1 80. Bd2
Qg2 81. Kd1 Bb6 82. Ra6 Qg4+ 83. Kc2 Qc8+ 84. Kb1 Qh3 85. Kc2 Qh2 86. Kd1 Qg1+
87. Kc2 Qf2 88. Kc1 Qg3 89. Kc2 Qc7+ 90. Kb1 Qh2 91. Kc1 Qe5 92. Kb1 Qh5 93.
Kc2 Qh2 94. Kd1 Qh3 95. Kc2 Qc8+ 96. Kb1 Qg4 97. Kc2 Qg2 98. Kd1 Qg3 99. Kc2
Qf2 100. Kc1 Qd4 101. Kc2 Qa1 102. b5 Bd4 103. Bb4 Qb2+ 104. Kd1 Be3 105. Rc6
Bg5 106. Rc5 Bh6 107. Rc6 Bf4 108. Rc5 Bg5 109. Rc6 Qa2 110. Rc5 Qg2 111. Rc6
Qb2 112. Rc5 Kb8 113. Rc6 Bf4 114. Rb6+ Ka8 115. Ra6+ Kb7 116. Rc6 Qb3+ 117.
Ke2 Qa2+ 118. Kd1 Bg5 119. Rc5 Bh6 120. Rc6 Qb3+ 121. Ke2 Qb2+ 122. Kd1 Bf4
123. Rc5 Qa1+ 124. Kc2 Qa2+ 125. Kd1 Kb6 126. Rc6+ Kb7 127. Rc5 Be3 128. Rc6
Qb2 129. Bf5 Qg2 130. Bd3 Qb2 131. Bf5 Bf4 132. Bd3 d4 133. Rc5 Qb3+ 134. Ke2
Qa2+ 135. Kf3 Bh2 136. Rc6 Qd5+ 137. Ke2 Be5 138. Rg6 Kc7 139. Kd1 Qb3+ 140.
Ke2 Qf7 141. a4 Qa2+ 142. Kf3 Qd5+ 143. Ke2 Bf4 144. b6+ Kd8 145. a5 Qh5+ 146.
Kf2 Qh3 147. Rg8+ Kd7 148. Bb5+ Ke6 149. Bc4+ Ke5 150. Re8+ Kf6 151. Rf8+ Kg7
152. Rf7+ Kh6 153. b7 Qe3+ 154. Kg2 Qe4+ 155. Kf2 d3 156. Rxf4 Qxf4+ 157. Kg2
Qg4+ 158. Kf2 Qe2+ 159. Kg3 Qe3+ 160. Kg2 Qe4+ 161. Kf2 Qe2+ 162. Kg3 Qe3+ 163.
Kg2 Qe4+ 164. Kf2 Qxb7 165. Bd2+ Kh5 166. Ke3 Qb1 167. a6 Kg4 168. a7 Qb7 169.
Kxd3 Qxa7 170. Be6+ Kg3 171. Bd5 Qd7 172. Kd4 Kg4 173. Bc3 Qd6 174. Ba5 Kf4
175. Bd2+ Kg4 176. Bc3 Qd7 177. Kc4 Kf4 178. Bd2+ Ke5 179. Bc3+ Kf4 180. Bd2+
Kg4 181. Bc3 Kg5 182. Bd2+ Kg6 183. Ba5 Qd6 184. Bc3 Kf5 185. Bb4 Qd7 186. Kd4
Qb5 187. Be4+ Kg4 188. Bd6 Kg5 189. Be7+ Kh5 190. Bd6 Kg5 191. Be7+ Kh5 192.
Bd6 Qe8 193. Kd5 Kg4 194. Be5 Kg5 195. Bd3 Qf7+ 196. Kd4 Qe8 197. Ke4 Qe7 198.
Kd5 Qf8 199. Kc4 Qc8+ 200. Kd5 Qa8+ 201. Kd4 Qe8 202. Ke4 Qf8 203. Kd5 Qf7+
204. Kd4 Qe6 205. Ke4 Kh4 206. Kd4 Kg5 207. Ke4 Qc6+ 208. Kd4 Qd7+ 209. Ke4 Qe6
210. Kd4 Qc6 211. Be4 Qe6 212. Bd3 Qc6 213. Be4 Qa4+ 214. Kd5 Qa6 215. Kd4 Qa5
216. Bd3 Qa3 217. Kc4 Qa5 218. Kd4 Qe1 219. Be4 Qa1+ 1/2-1/2
Parent - - By Venator (Silver) Date 2018-12-09 07:37
Game 2: Frankenstein-Dracula gambit

The return game also ends in an interesting draw, thus this gambit seems to be quite valid and even in LTC games it is very hard to crack.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1/2-1/2"]
[PlyCount "269"]
[EventDate "2018.??.??"]

1. e4 {book} e5 {book} 2. Nc3 {book} Nf6 {book} 3. Bc4 {book} Nxe4 {book} 4.
Qh5 {book} Nd6 {book} 5. Bb3 {book} Nc6 {book} 6. Nb5 {book} g6 {book} 7. Qf3 {
book} f5 {book} 8. Qd5 {book} Qf6 {book} 9. Nxc7+ {book} Kd8 {book} 10. Nxa8 {
book} b6 {book} 11. Qf3 Bb7 12. h4 Bh6 13. d3 f4 14. Bd2 Re8 15. O-O-O Nd4 16.
Qh3 Bxa8 17. Nf3 Nxf3 18. gxf3 Bc6 19. Rde1 a5 20. a3 Nf5 21. c3 Bg7 22. h5 g5
23. h6 Bxh6 24. d4 Nh4 25. d5 Bb7 26. c4 d6 27. Qg4 Bc8 28. Qh5 Bd7 29. Bc2 Bg7
30. Bc3 Ke7 31. b4 axb4 32. axb4 Rc8 33. Kb2 Rxc4 34. Be4 h6 35. Ra1 Rc7 36.
Ra8 Qf7 37. Qxf7+ Kxf7 38. Rha1 b5 39. R1a6 Ke7 40. Rxd6 Kxd6 41. Ra6+ Ke7 42.
d6+ Kd8 43. dxc7+ Kxc7 44. Kc2 h5 45. Kd3 Kd8 46. Ke2 g4 47. fxg4 hxg4 48. Kf1
Ke7 49. Ra7 Ke6 50. Ra6+ Ke7 51. Bc6 Bxc6 52. Rxc6 g3 53. Rc5 Kd6 54. Rxb5 Nf5
55. fxg3 Nxg3+ 56. Kg2 Ne4 57. Be1 Ke6 58. Rb7 Bf6 59. Kf3 Nd6 60. Rc7 Be7 61.
Ra7 Nb5 62. Rb7 Nd6 63. Ra7 Nc4 64. Rc7 Nd6 65. Rc6 Kf5 66. Rc5 Ke6 67. Bc3 Bf6
68. Bd2 Be7 69. Bc3 Bf6 70. Be1 Be7 71. b5 Nf5 72. Rc6+ Kd5 73. Bf2 Bd6 74. Kg4
Nd4 75. Bxd4 exd4 76. Kf3 d3 77. Rb6 Kc5 78. Rc6+ Kd5 79. Rc1 d2 80. Rd1 Bb4
81. b6 Kc6 82. Rb1 Bc5 83. b7 d1=Q+ 84. Rxd1 Kxb7 85. Kxf4 Kc6 86. Ke5 Bf2 87.
Rc1+ Kb5 88. Kd5 Kb4 89. Rc4+ Kb3 90. Rf4 Bg1 91. Rf1 Ba7 92. Rf7 Bg1 93. Rg7
Bf2 94. Rf7 Bg1 95. Rg7 Bf2 96. Rc7 Bg1 97. Rc1 Bf2 98. Rf1 Ba7 99. Ra1 Bf2
100. Rc1 Kb4 101. Rf1 Be3 102. Re1 Bd2 103. Rg1 Kc3 104. Rg3+ Kb4 105. Kd4 Be1
106. Rg2 Bc3+ 107. Kd5 Ba1 108. Rg6 Kc3 109. Rg3+ Kb4 110. Rg4+ Kc3 111. Rg3+
Kb4 112. Rg6 Kc3 113. Rf6 Bb2 114. Rf3+ Kb4 115. Rf1 Kc3 116. Rg1 Ba3 117. Rg3+
Kb4 118. Kd4 Bb2+ 119. Kd3 Kc5 120. Ke4 Bf6 121. Rg1 Bb2 122. Rg3 Ba1 123. Rf3
Bb2 124. Re3 Ba1 125. Rf3 Bb2 126. Rd3 Ba1 127. Rg3 Bb2 128. Rf3 Bh8 129. Rf1
Bb2 130. Rf3 Ba1 131. Rf8 Bb2 132. Rb8 Ba1 133. Rg8 Bb2 134. Rb8 Ba1 135. Rg8
1/2-1/2
Parent - - By Venator (Silver) Date 2018-12-09 07:40
Game 3: Slav, Shirov-gambit

AlphaZero sacrifices a pawn and gets strong counterplay against the black king. Stockfish's knight on e3 gets trapped and with a piece up white is winning.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1-0"]
[PlyCount "89"]
[EventDate "2018.??.??"]

1. d4 {book} d5 {book} 2. c4 {book} c6 {book} 3. Nf3 {book} Nf6 {book} 4. Nc3 {
book} e6 {book} 5. e3 {book} Nbd7 {book} 6. Qc2 {book} Bd6 {book} 7. g4 {book}
Bb4 {book} 8. Bd2 {book} Qe7 {book} 9. Rg1 {book} Bxc3 {book} 10. Bxc3 {book}
Ne4 {book} 11. O-O-O {book} O-O {book} 12. Be1 {book} b6 13. h4 Bb7 14. Ng5
Nxg5 15. hxg5 Qxg5 16. f4 Qe7 17. Kb1 c5 18. Bd3 g6 19. cxd5 cxd4 20. e4 Rac8
21. Qh2 f6 22. f5 exd5 23. fxg6 hxg6 24. Rh1 Qg7 25. Bc2 Ne5 26. Bb3 g5 27. Bg3
Nxg4 28. Qh3 Ne3 29. Rxd4 Kf7 30. Bf2 Rh8 31. Qd7+ Kg6 32. Qxg7+ Kxg7 33. Rxh8
Rxh8 34. Bxe3 Re8 35. Ra4 a6 36. Bxb6 dxe4 37. Rd4 Bc8 38. Kc1 e3 39. Rd8 Rxd8
40. Bxd8 Kg6 41. Bb6 Bb7 42. Bc2+ Kf7 43. Bxe3 Ke6 44. Kd2 Kd6 45. Bd3 1-0
Parent - - By Venator (Silver) Date 2018-12-09 07:43
Game 4: Nimzo-Indian, Hübner variation

On the very first move out of book Stockfish makes a very strange mistake: instead of the normal 8... e5 it plays 8... h6? AlphaZero immediately grabs the initiative and black never recovers.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1-0"]
[PlyCount "95"]
[EventDate "2018.??.??"]

1. d4 {book} Nf6 {book} 2. c4 {book} e6 {book} 3. Nc3 {book} Bb4 {book} 4. e3 {
book} c5 {book} 5. Bd3 {book} Nc6 {book} 6. Nf3 {book} Bxc3+ {book} 7. bxc3 {
book} d6 {book} 8. e4 h6 9. e5 dxe5 10. Nxe5 cxd4 11. Nxc6 bxc6 12. O-O dxc3
13. Ba3 Qc7 14. Qf3 Rb8 15. Bc5 e5 16. Rfe1 Be6 17. Qg3 Nh5 18. Qe3 Nf4 19. Bc2
f6 20. h4 Qa5 21. Rab1 Kf7 22. g3 Qxa2 23. Qe4 Qxc4 24. Qxc6 Nd3 25. Rxb8 Rxb8
26. Qc7+ Kg6 27. Bxd3+ Qxd3 28. Qxb8 Bd5 29. Kh2 c2 30. Qb2 a5 31. Qc1 a4 32.
Qe3 Qxe3 33. fxe3 Kf5 34. Kg1 Ke4 35. Kf2 Be6 36. Ke2 Bg4+ 37. Kd2 Bd1 38. Rf1
f5 39. Rf2 g6 40. Ba3 Bg4 41. Kxc2 Kxe3 42. Bc5+ Ke4 43. Kd2 g5 44. Bf8 f4 45.
gxf4 gxf4 46. Ke1 Be6 47. Rd2 Kf5 48. Rd8 1-0
Parent - - By Venator (Silver) Date 2018-12-09 07:45
Game 5: Dutch Leningrad

I don't like SF's opening play in this game and slowly AlphaZero builds up the pressure on the K-side. The piece sac 24... Ng5! seems to be decisive.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "0-1"]
[PlyCount "130"]
[EventDate "2018.??.??"]

1. d4 {book} f5 {book} 2. Nf3 {book} Nf6 {book} 3. g3 {book} g6 {book} 4. Bg2 {
book} Bg7 {book} 5. O-O {book} O-O {book} 6. c4 {book} d6 {book} 7. Nc3 {book}
c6 {book} 8. Rb1 {book} a5 9. Qb3 Na6 10. Rd1 h6 11. Be3 Rb8 12. Rbc1 Bd7 13.
c5+ Kh7 14. Na4 Nc7 15. Bd2 Be6 16. Qc2 Ncd5 17. b3 Ra8 18. Be1 Qe8 19. e3 g5
20. Nd2 Qh5 21. Bf3 g4 22. Be2 Kh8 23. Nc4 Ne4 24. h4 Ng5 25. hxg5 hxg5 26. f3
gxf3 27. Bf1 f4 28. Rd2 fxe3 29. Nxe3 Nxe3 30. Rh2 Bh3 31. Rxh3 Qxh3 32. Bxh3
Nxc2 33. Rxc2 Bxd4+ 34. Bf2 Bxf2+ 35. Kxf2 Kg7 36. Nb6 Rad8 37. Rc3 Rh8 38. Be6
Rh6 39. Re3 Rf8 40. Nd7 Rh2+ 41. Kf1 Re2 42. Rxe2 fxe2+ 43. Kxe2 Rh8 44. Kd3
Rh6 45. Bg4 d5 46. Ne5 e6 47. Nd7 Kf7 48. Ke3 Rh1 49. Bf3 Re1+ 50. Kd2 Ra1 51.
Bd1 Ke7 52. Ne5 Kf6 53. Ng4+ Kf5 54. Nh6+ Ke4 55. Nf7 g4 56. Nd6+ Kd4 57. a4
Ra2+ 58. Ke1 Kxc5 59. Nxb7+ Kb6 60. Nd8 Rg2 61. Nxe6 Rxg3 62. Kf2 Rc3 63. Bxg4
Rxb3 64. Bd1 Rb4 65. Kf3 Re4 0-1
Parent - - By Venator (Silver) Date 2018-12-09 07:49
Game 6: King's Indian Sämisch

A wild game, with a piece sacrifice by AlphaZero, a second black queen, several sacrifices by Stockfish and a draw by perpetual.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1/2-1/2"]
[PlyCount "119"]
[EventDate "2018.??.??"]

1. d4 {book} Nf6 {book} 2. c4 {book} g6 {book} 3. Nc3 {book} Bg7 {book} 4. e4 {
book} d6 {book} 5. f3 {book} O-O {book} 6. Be3 {book} c5 {book} 7. Nge2 {book}
Nc6 {book} 8. d5 {book} Ne5 {book} 9. Ng3 {book} e6 {book} 10. Be2 {book} exd5
{book} 11. cxd5 {book} h5 12. O-O h4 13. Nh1 h3 14. g3 Bd7 15. Rc1 b5 16. Nf2
Re8 17. Kh1 b4 18. Nb1 Neg4 19. fxg4 Nxe4 20. Nxe4 Rxe4 21. Bf4 Qe7 22. Bf3
Bxb2 23. Bxd6 Qxd6 24. Bxe4 Bxc1 25. Qxc1 Bb5 26. Re1 Re8 27. Nd2 c4 28. Nf3 c3
29. Qf4 Qc5 30. Ne5 Re7 31. Qf6 c2 32. Nxg6 fxg6 33. Qxg6+ Kf8 34. Qf6+ Kg8 35.
d6 c1=Q 36. Bh7+ Rxh7 37. Qd8+ Kf7 38. Qe7+ Kg6 39. Qe6+ Kg5 40. Qg8+ Kh6 41.
Qe6+ Kg7 42. Qe7+ Kg6 43. Qe6+ Kg5 44. Qg8+ Kh6 45. Qe6+ Kg7 46. Qe7+ Kg8 47.
Qd8+ Be8 48. Qxe8+ Kg7 49. Qe7+ Kg6 50. Qe6+ Kg5 51. Qg8+ Kh6 52. Qe6+ Kg5 53.
Qg8+ Kh6 54. Qe6+ Kg7 55. Qd7+ Kg6 56. Qe6+ Kg7 57. Qe7+ Kg8 58. Qd8+ Kg7 59.
Qd7+ Kg6 60. Qe6+ 1/2-1/2
Parent - - By Venator (Silver) Date 2018-12-09 07:52
Game 7: QGD Chigorin

In the opening Stockfish grabs a pawn, AlphaZero gets active play as way of compensation. Still SF manages to neutralize black's initiative and wins the ending thanks to its very strong bishop pair.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1-0"]
[PlyCount "153"]
[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. Qb3
Nge7 11. Qxb7 O-O 12. Qa6 Rfd8 13. Rd1 Rab8 14. h4 h5 15. Be2 Rb6 16. Qc4 Rdb8
17. Qa4 Qg6 18. Kf1 Rb1 19. e4 exd4 20. cxd4 Qd6 21. d5 Ne5 22. f4 N5g6 23. Rh3
c6 24. f5 Ne5 25. Rxb1 Rxb1+ 26. Kg2 Nxf5 27. Bxh5 Qc5 28. Bd1 Rb2 29. Rc3
Nxh4+ 30. Kf1 Qb6 31. Be3 Qd8 32. Bc1 Rb6 33. Qxa7 cxd5 34. exd5 Rb5 35. d6
Qxd6 36. Bc2 g5 37. Ba3 Qd8 38. Be7 Qe8 39. Bf6 Rb8 40. a4 Ng4 41. Qe7 Nh2+ 42.
Ke2 Ng4 43. Bxg5 Qxe7+ 44. Bxe7 Re8 45. Rc7 Nf6 46. Kd3 Nd5 47. Rc4 Nf3 48. Bd6
Rd8 49. Rg4+ Kh8 50. Ke2 Nf6 51. Rc4 Ng1+ 52. Kf1 Rxd6 53. Kxg1 Ra6 54. Rc5 Nd7
55. Rd5 Nf6 56. Rf5 Rc6 57. Bd3 Rc1+ 58. Kg2 Kg7 59. a5 Rc3 60. Rf3 Rc1 61. a6
Ne8 62. Re3 Nc7 63. Bf1 Ra1 64. Re7 Nxa6 65. Ra7 Rxf1 66. Kxf1 Nc5 67. Ke2 Kg6
68. Ke3 f6 69. Rc7 Ne6 70. Rc6 Ng7 71. Kf4 Nf5 72. Ke4 Ne7 73. Rc5 Kg7 74. f4
Kf7 75. f5 Kg7 76. Kf4 Kg8 77. Kg4 1-0
Parent - - By Venator (Silver) Date 2018-12-09 07:56
Game 8: Fried Liver attack

Of course this line is very dubious for black, still it is instructive to see how AlphaZero pushes its pawns and win the game. Surprisingly AlphaZero held the black position to a draw in the reverse game.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1-0"]
[PlyCount "109"]
[EventDate "2018.??.??"]

1. e4 {book} e5 {book} 2. Nf3 {book} Nc6 {book} 3. Bc4 {book} Nf6 {book} 4. Ng5
{book} d5 {book} 5. exd5 {book} Nxd5 {book} 6. Nxf7 {book} Kxf7 {book} 7. Qf3+
{book} Ke6 {book} 8. Nc3 {book} Ncb4 {book} 9. O-O {book} c6 {book} 10. d4 {
book} Qf6 {book} 11. Qe2 {book} Kd7 12. dxe5 Qf5 13. a3 Nxc3 14. bxc3 Nd5 15.
Bd3 Qf7 16. f4 Kc7 17. f5 Bc5+ 18. Kh1 Kb8 19. Bg5 Be7 20. Bd2 a5 21. Qf2 h5
22. c4 Nc7 23. a4 Qf8 24. Be3 h4 25. h3 Qe8 26. Rab1 Bb4 27. Bd4 g6 28. fxg6
Ne6 29. Be3 c5 30. Qf7 Bc3 31. Bf5 Ra6 32. g7 Nxg7 33. Bxc8 Qxf7 34. Rxf7 Kxc8
35. Rxg7 Bxe5 36. Rgxb7 Re8 37. Rf7 Bd6 38. Bf2 Bg3 39. Rb3 Bxf2 40. Rxf2 Re4
41. Rf8+ Kc7 42. Rf7+ Kc8 43. Rbf3 Rd6 44. Ra7 Kb8 45. Rg7 Rd8 46. c3 Rde8 47.
Rg4 Kc7 48. Kh2 Kd6 49. Rf6+ Kd7 50. Rfg6 Re3 51. Rxh4 Rxc3 52. Ra6 Kc7 53.
Rxa5 Rg8 54. Rxc5+ Kd6 55. Rd5+ 1-0
Parent - - By Venator (Silver) Date 2018-12-09 07:59
Game 9: Evans gambit

AlphaZero gets good counterplay for its pawn deficit, as black's knight is stuck on a5. Nevertheless, it is not clear how white should increase the pressure. 'Somehow' AlphaZero still manages to crash through black's defences.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1-0"]
[PlyCount "153"]
[EventDate "2018.??.??"]

1. e4 {book} e5 {book} 2. Nf3 {book} Nc6 {book} 3. Bc4 {book} Bc5 {book} 4. b4
{book} Bxb4 {book} 5. c3 {book} Ba5 {book} 6. d4 {book} d6 {book} 7. Qb3 {book}
Qd7 {book} 8. Nbd2 {book} Bb6 9. O-O Na5 10. Qc2 exd4 11. cxd4 Ne7 12. Re1 O-O
13. Bf1 Qd8 14. Ba3 Ng6 15. d5 Re8 16. Bb4 Rb8 17. Rad1 c6 18. Qb2 c5 19. Bc3
f6 20. a4 Bc7 21. Qa2 Re7 22. h3 Bd7 23. Ra1 Kh8 24. Nh2 Bb6 25. Rab1 Kg8 26.
Nhf3 Be8 27. Kh2 Bc7 28. Rb2 Ra8 29. Ra1 Bd7 30. Qb1 Bc8 31. Ng1 Qf8 32. Ne2 f5
33. Ng3 f4 34. Nf5 Bxf5 35. exf5 Ne5 36. Nf3 Qf6 37. Qc2 b6 38. Re1 Rf8 39. Qd1
Rd7 40. Bb5 Rdd8 41. Rc2 Qxf5 42. Rce2 Nb7 43. Ba6 Na5 44. Re4 Qf6 45. Bb5 Nb7
46. Bc4 Na5 47. Ba2 Kh8 48. Bb1 Rde8 49. Kg1 Kg8 50. h4 c4 51. Ng5 g6 52. Ne6
Rxe6 53. dxe6 Qxe6 54. Ba2 Kg7 55. Qe2 Rf6 56. Bxc4 Naxc4 57. Qxc4 Qxc4 58.
Rxc4 Nxc4 59. Re7+ Kf8 60. Bxf6 Bd8 61. Re4 Nd2 62. Rxf4 Bxf6 63. Rxf6+ Ke7 64.
Rf4 Nb3 65. Kf1 Nc5 66. h5 a5 67. Ke2 Ne6 68. Rc4 Nc5 69. Ke3 Ke6 70. Rg4 Kf7
71. Rd4 Ke6 72. h6 Ke7 73. f4 Ne6 74. Rd2 Nc5 75. Ra2 Nd7 76. Rb2 Kf6 77. Rb5
1-0
Parent - By Venator (Silver) Date 2018-12-09 08:03
Game 10: Slav, Smyslov defence

Black's position after the opening is passive and AlphaZero starts pounding at black's weakened K-side. Suddenly the game transforms into an ending with a limited number of pawns, but the extremely strong white pair of bishops prove too much.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1-0"]
[PlyCount "119"]
[EventDate "2018.??.??"]

1. d4 {book} d5 {book} 2. c4 {book} c6 {book} 3. Nf3 {book} Nf6 {book} 4. Nc3 {
book} dxc4 {book} 5. a4 {book} Na6 {book} 6. e4 {book} Bg4 {book} 7. Bxc4 {book
} e6 {book} 8. Be3 {book} Nb4 {book} 9. Rc1 Nd7 10. O-O Bd6 11. h3 Bxf3 12.
Qxf3 O-O 13. Bb3 Kh8 14. Qe2 a5 15. f4 Bc7 16. e5 g6 17. Ne4 Qe7 18. Ng5 Nb6
19. Rf3 N6d5 20. Bd2 Bb6 21. Qf2 Qd7 22. Re1 Bd8 23. Ne4 b6 24. g4 f5 25. exf6
Bxf6 26. Nxf6 Rxf6 27. Qe2 Raf8 28. Qe5 Qg7 29. Ref1 R6f7 30. Kh2 Qxe5 31. dxe5
Kg7 32. h4 Na6 33. Bc2 Nc5 34. f5 gxf5 35. gxf5 exf5 36. Rg1+ Kh8 37. Bh6 Rg8
38. Rxg8+ Kxg8 39. Bxf5 Kh8 40. Kg3 Ne7 41. Bc2 Rxf3+ 42. Kxf3 Ng6 43. Kg4
Nxe5+ 44. Kf5 Ned3 45. b3 Nb4 46. Bd1 Kg8 47. Ke5 Kf7 48. Kd6 Ne4+ 49. Kc7 b5
50. Kb6 bxa4 51. bxa4 Ke7 52. Bf3 Nd6 53. Kxa5 Nd5 54. Ka6 Kd7 55. Bf8 Nf4 56.
Kb6 Nc4+ 57. Kb7 Na5+ 58. Kb8 Nd5 59. Be4 Ke6 60. Bxh7 1-0
Parent - - By Lazy Frank (****) Date 2018-12-09 08:52
I'm happy they both played this gambit!
Even more i'm happy SF found it two best white moves (Qd3 and Ne2) out of book.
A0 Qf3 clearly draws.
Ok, A0 play's h5 and not take the knight?
Let me examine!

N2k1b1r/pb1p4/1pnn1qp1/4pp1p/8/1B1Q4/PPPPNPPP/R1B1K2R w KQ h6 0 13
Parent - By Lazy Frank (****) Date 2018-12-09 13:01
First provisional analyse: there should be played 0-0.

N2k1b1r/pb1p4/1pnn1qp1/4pp1p/8/1B1Q4/PPPPNPPP/R1B2RK1 b - - 1 13
Parent - - By Lazy Frank (****) Date 2018-12-09 13:41 Edited 2018-12-10 17:38
Oh, no ... :smile:
Simply beauty counter!

a4(!!)

N2k1b1r/pb1p4/1pnn1qp1/4pp1p/P7/1B1Q4/1PPPNPPP/R1B1K2R b KQ a3 0 13


Provisional line:

12. ... h5 13. a4 Ne4 14. Nxb6 axb6 15. a5 Nb4 16. Qb5 Bc5 17. axb6

3k3r/1b1p4/1P3qp1/1Qb1pp1p/1n2n3/1B6/1PPPNPPP/R1B1K2R b KQ - 0 17


I know the best white response (to Bxf2+ Kd1 and to Qh4 g3), but i don't know best black response! Like - pick your poison same! I just agree ...

Position after 19. ... a5 (exactly similar both colors pawns structure) in the A0-SF return game we both, i am and Loius Zulli found a draw a years ago ... :smile:

3kr3/3p3p/1pbn1qpb/p3p3/5p1P/1B1P1P1Q/PPPB1P2/2K1R2R w - a6 0 20
Parent - - By Lazy Frank (****) Date 2018-12-11 04:53
Provisional mainline of AlphaZero sideline 12. ... h5


[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish"]
[Black "AlphaZero"]
[Result "1-0"]
[ECO "C27"]
[Opening "Vienna"]
[Variation "Frankenstein-Dracula, 11.d3"]
[TimeControl "0+0"]
[PlyCount "63"]

1. e4 {B} e5 {B} 2. Nc3 {B} Nf6 {B} 3. Bc4 {B} Nxe4 {B} 4. Qh5 {B} Nd6 {B}
5. Bb3 {B} Nc6 {B} 6. Nb5 {B} g6 {B} 7. Qf3 {B} f5 {B} 8. Qd5 {B} Qf6 {B}
9. Nxc7+ {B} Kd8 {B} 10. Nxa8 {B} b6 {B} 11. Qd3 Bb7 12. Ne2 h5 13. a4 Ne4
14. Nxb6 axb6 15. a5 Nb4 16. Qb5 Bc5 17. axb6 Qh4 18. g3 Bxf2+ 19. Kd1 Qg4
20. Qxe5 Re8 21. Qb8+ {Qc7+ transposes} Ke7 22. Qf4 Qxf4 23. gxf4 Bxb6 24.
Rf1 Nf2+ 25. Ke1 Bd5 26. Ba4 Ng4 27. h3 Nh2 28. Rf2 Nf3+ 29. Kf1 Bxf2 30.
Kxf2 g5 31. fxg5 Nxg5 32. Nf4
Parent - - By Boombaard (**) Date 2018-12-17 11:57
15...Bc5 draws.
Parent - - By Lazy Frank (****) Date 2018-12-17 18:07 Edited 2018-12-17 18:17
I can say the same: Qd3 wins! :lol:
I mean it is easiest way say something without any evidence!
Parent - - By Boombaard (**) Date 2018-12-18 10:27
15...Bc5 16.a6 Ba8 17.0-0 h4 18.Bd5 Ng3! or
17.Rf1 Nb4 18.Qf3 Bc6 19.h4 Nxd2 20.Bxd2 Bxf3 21.Bg5 Qxg5 22.hxg5 Bxg2 and white is only a bit better.

BTW, 11.Qf3 is probably better than 11.Qd3. After 11.Qf3 Bb7 12.h4! looks very strong.
Parent - - By Lazy Frank (****) Date 2018-12-18 20:36
Problem with 11. Qf3  actually is very clear - Bb7 keep an eye on white queen and request one more tempo (Qh3) to hide. Here suddenly white queen got jailed.
Bc5 i investigate later (busy with Traxler), first imagination - no need to correct bishop back to a8 and close queenside (pawn b6 or square b6 continues to be very important).
Parent - - By Boombaard (**) Date 2018-12-19 19:54
In the 8...Qf6 variation after 11.Qf3! Bb7 12.h4! is very strong for white.
Parent - - By Lazy Frank (****) Date 2018-12-19 20:36
Move forward!

Take in account A0-SF game, there is also CC game, there is also my study work. :wink:
Parent - - By Boombaard (**) Date 2018-12-20 07:21
Ok, from the A0-SF game I deviate with 16.Qg4 (instead of 16.Qh3)
Parent - - By Lazy Frank (****) Date 2018-12-21 17:29
Ok, very good ... and now sit on black side and play the best, knowing what have white in the mind. :cool:
Parent - - By Boombaard (**) Date 2018-12-21 19:12
You dont have a move? What a pity. I hoped for a joined analysis. I'm afraid black is lost.
Parent - - By Lazy Frank (****) Date 2018-12-21 22:07 Edited 2018-12-21 22:11
Im afraid you don't have defeat line! :smile:
Did you know why? Cause you wanna play only from one side one variation! :twisted: Far away from theoretical solution.
Mine is here:
http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?pid=579411
Parent - - By Boombaard (**) Date 2018-12-31 16:02
If I'm not mistaken, your files with analyses do not mention 11.Qf3 in the 8...Qf6 variation. Neither do I find a correspondence game with 11.Qf3 (from 2015 till november 2018).
I really hope the Dracula Frankenstein is playable (I play it myself), but I'm afraid 11.Qf3 is too strong.

I'm still curious how you respond to 16.Qg4!
Parent - - By Lazy Frank (****) Date 2018-12-31 19:55
You not mistaken!

Lets play two simultaneous games at CC level (Frankenstein-Dracula), one you white white, one i am ... :smile:
Parent - - By Boombaard (**) Date 2019-01-01 00:20
Allright!
Game1: I play 16.Qg4
Game 2: I play 8..Qf6
Parent - - By Lazy Frank (****) Date 2019-01-01 14:50
http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=32881

And yes ... will be nice if you move your pieces and give chance to me move mine.
Parent - By Boombaard (**) Date 2019-01-02 08:40
And what about the other game in which you play white? Could you arrange that please?
Parent - By Lazy Frank (****) Date 2018-12-23 05:34
Sorry, i was hurry up with Nxb6.:red:

12. ... h5 13. a4 Ne4 14. O-O

N2k1b1r/pb1p4/1pn2qp1/4pp1p/P3n3/1B1Q4/1PPPNPPP/R1B2RK1 b - - 2 14
Parent - By gsgs (***) Date 2018-12-11 14:13 Edited 2018-12-11 14:18
ok, mostly too difficult for a human to understand ...

I'd be interested : when they disagree in evals, who proves usually right some moves later ?

and the average-eval chart by movenumber : is a0 better in the opening
and sf in the endgame ?
Parent - By InspectorGadget (*****) Date 2019-01-10 20:49
Since AlphaZero taught himself to play chess, it would be interesting if he doesn't use an opening book and let Stockfish use a book. It would be interesting to see how AlphaZero handles the openings.
- - By Venator (Silver) Date 2018-12-09 08:05
Game 11: French, Chatard-Alekhine

An absolute stunner, Stockfish wins in just 22 moves! Probably 12... Nb6 is already the decisive mistake.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1-0"]
[PlyCount "43"]
[EventDate "2018.??.??"]

1. e4 {book} e6 {book} 2. d4 {book} d5 {book} 3. Nc3 {book} Nf6 {book} 4. Bg5 {
book} Be7 {book} 5. e5 {book} Nfd7 {book} 6. h4 {book} Bxg5 {book} 7. hxg5 {
book} Qxg5 {book} 8. Nh3 {book} Qe7 {book} 9. Qg4 g6 10. Ng5 h6 11. O-O-O Nc6
12. Nb5 Nb6 13. Rd3 h5 14. Rf3 a6 15. Qg3 Nd8 16. Nc3 Nd7 17. Bd3 Nf8 18. Rh4
Rg8 19. Bc4 Qd7 20. Nce4 dxe4 21. Nxe4 Nh7 22. Rxh5 1-0
Parent - - By Venator (Silver) Date 2018-12-09 08:08 Edited 2018-12-09 09:17
Game 12: King's Indian Sämisch

Very complicated game, SF's king gets stuck in the center and AlphaZero sacrifices a pawn and an exchange to keep it there. After a nice tactical sequence Stockfish manages to exchange a lot of pieces, winning a pawn in the process. This proves decisive.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1-0"]
[PlyCount "181"]
[EventDate "2018.??.??"]

1. d4 {book} Nf6 {book} 2. c4 {book} g6 {book} 3. Nc3 {book} Bg7 {book} 4. e4 {
book} d6 {book} 5. f3 {book} O-O {book} 6. Be3 {book} Nc6 {book} 7. Nge2 {book}
a6 {book} 8. Qd2 {book} Rb8 {book} 9. h4 {book} h5 {book} 10. Rc1 Re8 11. Nd1
Bd7 12. Nf2 b5 13. c5 dxc5 14. Rxc5 e5 15. d5 Ne7 16. Qc1 Bf8 17. a3 b4 18.
axb4 Rxb4 19. Nc3 c6 20. Nd3 Rd4 21. Nxe5 Nf5 22. Bxd4 Nxd4 23. Nxd7 Nxd7 24.
Rc4 Bg7 25. Qg5 Bf6 26. Qd2 Nb3 27. Qd1 Bxh4+ 28. Ke2 Na5 29. dxc6 Nxc4 30.
cxd7 Re7 31. Nd5 Rxd7 32. Rxh4 Qxh4 33. Qd4 Rxd5 34. Qxd5 Nb6 35. Qd6 Nc8 36.
Qxa6 Qd8 37. Qc4 Nb6 38. Qc5 h4 39. b4 Na4 40. Qc2 Qd7 41. Qb3 Nb6 42. Qc3 Na4
43. Qe5 Kh7 44. Qf6 Kg8 45. Ke1 Qa7 46. Bc4 Qg1+ 47. Kd2 Qxg2+ 48. Kc1 Kh7 49.
Qxf7+ Kh6 50. Qf4+ Kh5 51. Qe5+ Qg5+ 52. Qxg5+ Kxg5 53. Bf1 Kf4 54. Kc2 Ke5 55.
Kb3 Nb6 56. b5 g5 57. Kb4 Kf4 58. Kc5 Kxf3 59. Kxb6 g4 60. e5 Kf2 61. e6 h3 62.
Bxh3 gxh3 63. e7 h2 64. e8=Q h1=Q 65. Qf7+ Ke3 66. Qb3+ Kd2 67. Qb4+ Ke2 68.
Qc4+ Ke3 69. Qc5+ Ke2 70. Qc2+ Ke3 71. Qc3+ Ke2 72. Qe5+ Kf2 73. Qd4+ Ke2 74.
Ka7 Qh7+ 75. Ka6 Kf1 76. b6 Qg6 77. Ka7 Qf7+ 78. b7 Kg2 79. Qe4+ Kg1 80. Kb6
Qf2+ 81. Kb5 Qb2+ 82. Kc5 Qc1+ 83. Qc4 Qg5+ 84. Kb4 Qg3 85. Qd4+ Kg2 86. Ka4
Qb8 87. Qb6 Kh2 88. Kb3 Kh3 89. Qb4 Kg2 90. Kc2 Kg1 91. Kb1 1-0
Parent - - By Venator (Silver) Date 2018-12-09 08:11
Game 13: Slav, Shirov gambit

Black's knight gets stuck on e4 and with 17... Ncxe5 AlphaZero sacrifices this piece for compensation. But here this simply doesn't seem to work. Stockfish easily neutralizes black's threats and wins rather quickly.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1-0"]
[PlyCount "81"]
[EventDate "2018.??.??"]

1. d4 {book} d5 {book} 2. c4 {book} c6 {book} 3. Nf3 {book} Nf6 {book} 4. Nc3 {
book} e6 {book} 5. e3 {book} Nbd7 {book} 6. Qc2 {book} Bd6 {book} 7. g4 {book}
Bb4 {book} 8. Bd2 {book} Qe7 {book} 9. Rg1 {book} Bxc3 {book} 10. Bxc3 {book}
Ne4 {book} 11. O-O-O {book} O-O {book} 12. Be1 {book} b5 13. c5 a5 14. h4 b4
15. g5 f5 16. Nh2 e5 17. f3 Nexc5 18. dxc5 Rb8 19. b3 a4 20. Kb2 axb3 21. axb3
Nxc5 22. Rc1 Ne6 23. Qxc6 Rd8 24. Rg2 Kh8 25. Rd2 d4 26. exd4 Bb7 27. Qc2 Rbc8
28. Qd1 Nxd4 29. Bf2 Ra8 30. Bxd4 exd4 31. Bb5 d3 32. Kb1 Qe5 33. Ba4 Qf4 34.
h5 Qxg5 35. Rxd3 h6 36. Rd4 Qf6 37. Rcc4 Qe7 38. Qd2 Kh7 39. Rxb4 Qf6 40. Qe3
Bd5 41. Qd3 1-0
Parent - - By Venator (Silver) Date 2018-12-09 08:14
Game 14: Sicilian Dragon

This variation in the Dragon is quite dubious, nevertheless it is instructive to see how Stockfish piles up the pressure. 29.Rxh7! starts some nice tactics, which lead to a winning position for white.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1-0"]
[PlyCount "141"]
[EventDate "2018.??.??"]

1. e4 {book} c5 {book} 2. Nf3 {book} d6 {book} 3. d4 {book} cxd4 {book} 4. Nxd4
{book} Nf6 {book} 5. Nc3 {book} g6 {book} 6. Be3 {book} Bg7 {book} 7. f3 {book}
O-O {book} 8. Qd2 {book} Nc6 {book} 9. Bc4 {book} Bd7 {book} 10. O-O-O {book}
Rc8 {book} 11. Bb3 {book} Ne5 {book} 12. h4 {book} Nc4 {book} 13. Bxc4 {book}
Rxc4 {book} 14. g4 b5 15. Kb1 b4 16. Nce2 Qa5 17. h5 Rfc8 18. Rc1 R4c7 19. Bh6
Bh8 20. Bg5 Ba4 21. Be3 Qa6 22. b3 Bb5 23. Ng3 e6 24. Nxb5 Qxb5 25. Bd4 a5 26.
Ne2 a4 27. hxg6 fxg6 28. g5 Nd7 29. Rxh7 e5 30. bxa4 Qc6 31. Rh6 exd4 32. Rxg6+
Kf7 33. Qf4+ Ke7 34. Qf5 Rf8 35. Qe6+ Kd8 36. Rg8 Qa6 37. Nf4 d3 38. Nxd3 Qc4
39. Rxf8+ Nxf8 40. Qxd6+ Nd7 41. Nf4 Be5 42. Qd2 Qc6 43. a5 Bxf4 44. Qxf4 Kc8
45. Qf5 Kb8 46. g6 Qc3 47. Qe6 Ka7 48. Qd6 Ne5 49. Qb6+ Ka8 50. g7 Rxg7 51. Rh1
Ng6 52. Rd1 Ne7 53. Rd3 Qe1+ 54. Kb2 Nc8 55. Qc5 Kb8 56. Rb3 Rc7 57. Rxb4+ Ka8
58. Qd5+ Ka7 59. Qd4+ Ka8 60. f4 Qe2 61. Qd3 Qf2 62. f5 Qc5 63. Rb5 Qc6 64. e5
Na7 65. Rb3 Qc5 66. e6 Qe5+ 67. c3 Nc6 68. Qb5 Qh2+ 69. Ka1 Qg1+ 70. Rb1 Qg7
71. Qa6+ 1-0
Parent - - By Venator (Silver) Date 2018-12-09 08:17
Game 15: Ruy Lopez Breyer

In the Breyer AlphaZero's 14... b4 looks suboptimal, the normal 14... c6 is better. I don't know where black went wrong exactly, but in the endposition black loses a piece because of the threat Rxh6+!

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1-0"]
[PlyCount "81"]
[EventDate "2018.??.??"]

1. e4 {book} e5 {book} 2. Nf3 {book} Nc6 {book} 3. Bb5 {book} a6 {book} 4. Ba4
{book} Nf6 {book} 5. O-O {book} Be7 {book} 6. Re1 {book} b5 {book} 7. Bb3 {book
} d6 {book} 8. c3 {book} O-O {book} 9. h3 {book} Nb8 {book} 10. d4 {book} Nbd7
{book} 11. a4 Bb7 12. Bc2 Re8 13. Nbd2 Bf8 14. Bd3 b4 15. Qc2 h6 16. dxe5 dxe5
17. Bc4 Nb6 18. cxb4 Nxc4 19. Nxc4 Bxb4 20. Bd2 Bd6 21. Bc3 Nd7 22. Nfd2 Qf6
23. Red1 Rac8 24. Nf1 Nf8 25. f3 Bc5+ 26. Kh1 Bd4 27. Nfe3 c5 28. Nf5 Rc6 29.
f4 Qe6 30. Qd3 f6 31. Rac1 Kh7 32. fxe5 fxe5 33. Na5 Rc7 34. Bxd4 exd4 35. Nxb7
Rxb7 36. Rxc5 Ng6 37. Rdc1 Nf4 38. Qd2 Nh5 39. Rc6 Qe5 40. R1c5 Ng3+ 41. Kg1
1-0
Parent - - By Venator (Silver) Date 2018-12-09 08:22
Game 16: English

Wild game, with SF's king performing an artifical Q-side castling, many passed pawns and a draw in the end.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1/2-1/2"]
[PlyCount "181"]
[EventDate "2018.??.??"]

1. c4 {book} c5 {book} 2. g3 {book} g6 {book} 3. Bg2 {book} Bg7 {book} 4. Nc3 {
book} Nc6 {book} 5. a3 {book} e5 {book} 6. b4 {book} d6 7. Rb1 Nge7 8. d3 O-O
9. h4 h6 10. Bd2 Rb8 11. Nf3 f5 12. b5 Nd4 13. Nxd4 cxd4 14. Nd5 b6 15. Qa4 Rb7
16. f4 Kh7 17. h5 gxh5 18. Rc1 Qe8 19. fxe5 dxe5 20. Kd1 e4 21. Nf4 h4 22. Rxh4
Ng6 23. Rh1 Ne5 24. Kc2 Ng4 25. Qb3 Rd7 26. Kb1 Ne3 27. Rhg1 Bb7 28. Bh3 Qf7
29. Qa2 Rc8 30. c5 bxc5 31. Bxe3 exd3 32. exd3 dxe3 33. Qe6 Qxe6 34. Nxe6 Rf7
35. Nxg7 Kxg7 36. Rge1 Re8 37. Rxc5 Kg6 38. Kc2 h5 39. a4 Bf3 40. a5 h4 41.
gxh4 f4 42. d4 Kh6 43. d5 Re5 44. Be6 Rf8 45. b6 Bh5 46. Kc3 f3 47. Kd4 f2 48.
Rcc1 Rxe6 49. dxe6 fxe1=Q 50. Rxe1 axb6 51. axb6 e2 52. b7 Kg7 53. e7 Re8 54.
Kc5 Bf3 55. Kd6 Kf6 56. h5 Bxh5 57. Kc7 Rxe7+ 58. Kb6 Re8 59. Kc7 Re7+ 60. Kb6
Re8 61. Ka7 Ke5 62. b8=Q+ Rxb8 63. Kxb8 Kd6 64. Ra1 Bg4 65. Kb7 Bf3+ 66. Kb8
Bg4 67. Kb7 Bf3+ 68. Kb8 Bh5 69. Kc8 Ke7 70. Rb1 Bg4+ 71. Kc7 Ke6 72. Kc6 Ke5
73. Kc5 Ke4 74. Kc4 Be6+ 75. Kc3 Ke3 76. Ra1 Bd7 77. Rb1 Be8 78. Ra1 Bd7 79.
Rb1 Be8 80. Ra1 Bc6 81. Rb1 Bd7 82. Ra1 Be8 83. Rb1 Bd7 84. Ra1 Be8 85. Rb1 Bb5
86. Ra1 Bc6 87. Rb1 Ba4 88. Re1 Bb5 89. Ra1 Ba4 90. Re1 Bb5 91. Ra1 1/2-1/2
Parent - - By Venator (Silver) Date 2018-12-09 08:37
Game 17: King's Indian Mar del Plata

Very complex game, hard to follow for a human. The tactics finally lead to an ending where black's strong pair of bishops easily hold the balance vs white's extra pawn.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1/2-1/2"]
[PlyCount "512"]
[EventDate "2018.??.??"]

1. d4 {book} Nf6 {book} 2. c4 {book} g6 {book} 3. Nc3 {book} Bg7 {book} 4. e4 {
book} d6 {book} 5. Nf3 {book} O-O {book} 6. Be2 {book} e5 {book} 7. O-O {book}
Nc6 {book} 8. d5 {book} Ne7 {book} 9. Ne1 {book} Nd7 {book} 10. Be3 {book} f5 {
book} 11. f3 {book} f4 {book} 12. Bf2 {book} g5 {book} 13. b4 {book} Nf6 {book}
14. c5 {book} Ng6 {book} 15. a4 h5 16. c6 bxc6 17. dxc6 Be6 18. Ba6 g4 19. Qd3
Kh7 20. Bc4 Bc8 21. Rd1 g3 22. hxg3 fxg3 23. Bxg3 h4 24. Bh2 Nh5 25. Ne2 Qg5
26. Qd2 Qe7 27. Nc2 Bh6 28. Qe1 Qg5 29. b5 a6 30. b6 cxb6 31. Rxd6 Ra7 32. Kh1
Rg7 33. Qf2 Nf6 34. Qe1 Nh5 35. Rg1 Qe7 36. Qb4 Rf6 37. Rgd1 Rxd6 38. Qxd6 Qg5
39. Qd8 Ne7 40. Ne1 Ng3+ 41. Bxg3 hxg3 42. Rd3 Qf6 43. Qd6 Qxd6 44. Rxd6 Be3
45. Nd3 Rg5 46. Bf7 b5 47. a5 b4 48. c7 b3 49. Ng1 Bd2 50. Bxb3 Bxa5 51. Rf6
Bxc7 52. Ne2 a5 53. Bc4 Bd7 54. Rf7+ Rg7 55. Rxg7+ Kxg7 56. Nc5 Bc8 57. Nxg3
Bb6 58. Na4 Ba7 59. Ne2 Bd7 60. Nec3 Nc8 61. Bb5 Be6 62. Nd5 Bd4 63. Bc4 Nd6
64. Bb3 Kf8 65. g3 Bh3 66. g4 Bf1 67. Kh2 Bf2 68. Ndc3 Nb5 69. Nxb5 Bxb5 70.
Nc3 Bd3 71. Nd5 Be1 72. Nb6 Kg7 73. Kg2 Be2 74. Nd7 Bc3 75. Nc5 Kg6 76. Kf2 Bb5
77. Kg3 Be1+ 78. Kg2 Kg5 79. Ba4 Bc4 80. Nd7 Kf4 81. Bd1 Bb5 82. Nc5 Bc4 83.
Nd7 Bb5 84. Nb6 Bh4 85. Nd5+ Kg5 86. Nc3 Ba6 87. Bb3 Be1 88. Nd5 Bb5 89. Nb6
Bb4 90. Nd5 Bd2 91. Nb6 Bb4 92. Nd5 Bd2 93. Nc7 a4 94. Nxb5 axb3 95. Na3 Bc1
96. Nb1 Kh4 97. Kf1 b2 98. Kf2 Kh3 99. Ke2 Kg3 100. Nc3 Kg2 101. Nb1 Bg5 102.
Kd3 Kxf3 103. Kc2 Bc1 104. g5 Bxg5 105. Kxb2 Kxe4 106. Kc2 Kf3 107. Nc3 Ke3
108. Nd1+ Kf3 109. Nc3 Bd8 110. Kd3 Be7 111. Ne4 Bb4 112. Ng5+ Kf4 113. Ne4 Kf3
114. Ng5+ Kf4 115. Nh3+ Kf5 116. Nf2 Bc5 117. Ne4 Bb4 118. Nf2 Be7 119. Nd1 Kf4
120. Nc3 Kf3 121. Ne4 Kf4 122. Nd2 Bg5 123. Nb1 Kf3 124. Nc3 Bc1 125. Ne4 Bh6
126. Nc3 Bf4 127. Ne4 Bc1 128. Nc3 Bh6 129. Ne4 Be3 130. Nc3 Bb6 131. Ne4 Be3
132. Nc3 Bc1 133. Ne4 Bh6 134. Nc3 Be3 135. Ne4 Bf4 136. Nc3 Be3 137. Ne4 Bc1
138. Nc3 Ba3 139. Ne4 Kf4 140. Nd2 Bb4 141. Nf1 Kf3 142. Nh2+ Kf4 143. Nf1 Ba5
144. Ke2 Ke4 145. Nh2 Kf4 146. Nf1 Bd8 147. Nd2 Bg5 148. Nb1 Ke4 149. Na3 Kd4
150. Nb1 Kc4 151. Na3+ Kc3 152. Nb5+ Kc4 153. Na3+ Kd5 154. Nb1 Kd4 155. Na3 e4
156. Nc2+ Kc4 157. Kd1 Kd3 158. Nb4+ Ke3 159. Na2 Kd3 160. Nb4+ Kc3 161. Nc6
Bf4 162. Ke2 Kc4 163. Na5+ Kb4 164. Nc6+ Kc5 165. Na5 Kb4 166. Nc6+ Kc4 167.
Na5+ Kc3 168. Nc6 Bg5 169. Na5 Bh6 170. Nc6 Kc4 171. Na5+ Kc3 172. Nc6 Kc4 173.
Na5+ Kb4 174. Nc6+ Kc5 175. Na5 Kb4 176. Nc6+ Kc5 177. Na5 Bg5 178. Nb3+ Kc4
179. Na5+ Kc3 180. Nc6 Kc4 181. Na5+ Kc3 182. Nc6 Bf4 183. Na5 Bc1 184. Nc6 Kc4
185. Na5+ Kd5 186. Nb3 Bh6 187. Na1 Kc4 188. Nc2 Bf4 189. Ne1 Kd4 190. Nc2+ Kc4
191. Ne1 Kd4 192. Nc2+ Kd5 193. Na1 Kc4 194. Nc2 Bh6 195. Ne1 Bf4 196. Nc2 Bg5
197. Kd1 Kc3 198. Ne1 Bd2 199. Nd3 Be3 200. Ne5 Kd4 201. Ng4 Bf4 202. Ke2 Bg5
203. Nf2 e3 204. Nd1 Bh6 205. Nb2 Bf4 206. Na4 Bg5 207. Nb2 Ke4 208. Nd1 Kd4
209. Nb2 Bh6 210. Nd1 Bf4 211. Nb2 Bg5 212. Nd1 Bh6 213. Nb2 Ke4 214. Nd1 Bf4
215. Nb2 Bc7 216. Nd1 Bd8 217. Nxe3 Ba5 218. Nd1 Bb6 219. Nc3+ Kd4 220. Nb1 Bd8
221. Nd2 Bb6 222. Kf3 Bc7 223. Nb3+ Ke5 224. Na1 Kd4 225. Nc2+ Kd3 226. Nb4+
Kd4 227. Na2 Bd8 228. Nc1 Bb6 229. Ne2+ Ke5 230. Kg4 Bc7 231. Kg5 Bd8+ 232. Kg6
Ba5 233. Ng3 Bd2 234. Nf5 Be1 235. Ng7 Ba5 236. Nh5 Bd2 237. Kf7 Kf5 238. Ng7+
Ke5 239. Ke7 Bg5+ 240. Kd7 Be3 241. Ne6 Bc1 242. Nd8 Kd5 243. Nf7 Bd2 244. Ke7
Be3 245. Kf6 Bd4+ 246. Kf5 Bg7 247. Ng5 Ba1 248. Ne6 Bh8 249. Nf4+ Kd4 250. Ng6
Bg7 251. Ke6 Ke4 252. Nh4 Ba1 253. Ke7 Bh8 254. Ng6 Ba1 255. Nf8 Bh8 256. Ne6
Ba1 1/2-1/2
Parent - - By Venator (Silver) Date 2018-12-09 08:39
Game 18: King's Indian Sämisch

Another very complex game, that ends in a draw after many adventures.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "Stockfish 8"]
[Black "AlphaZero"]
[Result "1/2-1/2"]
[PlyCount "250"]
[EventDate "2018.??.??"]

1. d4 {book} Nf6 {book} 2. c4 {book} g6 {book} 3. Nc3 {book} Bg7 {book} 4. e4 {
book} d6 {book} 5. f3 {book} O-O {book} 6. Be3 {book} e5 {book} 7. d5 {book}
Nh5 {book} 8. Qd2 {book} f5 {book} 9. exf5 {book} gxf5 {book} 10. O-O-O {book}
Nd7 {book} 11. Nge2 Ndf6 12. g3 a6 13. Bg5 b5 14. Re1 b4 15. Nd1 c6 16. dxc6
Qc7 17. Qxb4 Qxc6 18. Rg1 Kh8 19. h3 Nd5 20. Qd2 Nb6 21. Nec3 Nxc4 22. Bxc4
Qxc4 23. Qxd6 Qd4 24. Be7 Re8 25. f4 e4 26. Ne3 Ra7 27. Qxd4 Bxd4 28. Bg5 Rf7
29. Ncd5 Be6 30. Rd1 Ba7 31. Rg2 Rg8 32. Nf1 Rd7 33. Nc3 e3 34. Rc2 Re8 35. b3
Bc5 36. Re1 Bf7 37. Nd1 Ba3+ 38. Nb2 Bd5 39. Rxe3 Rxe3 40. Nxe3 Be4 41. Rc8+
Kg7 42. Bh4 Rd3 43. Rc7+ Kg8 44. Nc2 Nxg3 45. Bxg3 Bxb2+ 46. Kxb2 Rxg3 47. Nd4
Rxh3 48. Ne6 Rh2+ 49. Kc3 Rxa2 50. Kd4 Ra5 51. Rc8+ Kf7 52. Ng5+ Kg7 53. Nxe4
fxe4 54. Kxe4 Rb5 55. Rc7+ Kg8 56. b4 Rxb4+ 57. Ke5 a5 58. f5 h5 59. f6 h4 60.
Ke6 Re4+ 61. Kf5 Ra4 62. Kg5 Kf8 63. Rh7 Rb4 64. Rh8+ Kf7 65. Rh7+ Kg8 66. Rg7+
Kf8 67. Re7 h3 68. Ra7 Rb1 69. Ra8+ Kf7 70. Ra7+ Ke6 71. Ra6+ Kd7 72. Ra7+ Kd6
73. f7 Rf1 74. Rxa5 h2 75. Ra1 Rxf7 76. Rh1 Rf2 77. Rd1+ Ke5 78. Re1+ Kd4 79.
Rh1 Ke3 80. Kg4 Rg2+ 81. Kh3 Rg8 82. Ra1 Ra8 83. Rb1 Rb8 84. Ra1 Ra8 85. Rb1
Ra2 86. Rf1 Rc2 87. Ra1 Kf3 88. Rb1 Ra2 89. Rc1 Rb2 90. Ra1 Rd2 91. Rb1 Ra2 92.
Rc1 Rb2 93. Ra1 Rc2 94. Rb1 Rd2 95. Ra1 Rb2 96. Ra3+ Kf4 97. Ra1 Kf3 98. Rc1
Ra2 99. Rf1+ Ke3 100. Kg3 Rd2 101. Ra1 Rc2 102. Kh3 Ra2 103. Rb1 Rb2 104. Ra1
Ra2 105. Rb1 Rd2 106. Ra1 Kf3 107. Rb1 Rc2 108. Ra1 Re2 109. Rb1 Rd2 110. Ra1
Re2 111. Rb1 Rc2 112. Ra1 Ke3 113. Rb1 Ra2 114. Rf1 Rb2 115. Ra1 Rd2 116. Kg3
Ra2 117. Rf1 Rc2 118. Ra1 Rd2 119. Rb1 Rc2 120. Ra1 Rd2 121. Rb1 Rd8 122. Ra1
Rh8 123. Re1+ Kd3 124. Rd1+ Ke2 125. Rh1 Rg8+ 1/2-1/2
Parent - - By Venator (Silver) Date 2018-12-09 08:45
Game 19: King's gambit

Another murky game, with many complications and hard to follow actions. Great stuff. In the end AlphaZero saves itself in a theoretically drawn rook ending two pawns down.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1/2-1/2"]
[PlyCount "325"]
[EventDate "2018.??.??"]

1. e4 {book} e5 {book} 2. f4 {book} exf4 {book} 3. Bc4 {book} Qh4+ {book} 4.
Kf1 {book} d6 5. Nc3 Nf6 6. Nf3 Qh6 7. d4 Be7 8. Kg1 Be6 9. d5 Bd7 10. g3 Nh5
11. Be2 g6 12. Ne1 Na6 13. Ng2 Qg7 14. gxf4 f5 15. e5 dxe5 16. Bxh5 gxh5 17.
Qxh5+ Kd8 18. fxe5 Rg8 19. Qe2 Nb4 20. h4 Bc5+ 21. Kf1 Kc8 22. Rh3 Qg4 23. Qxg4
fxg4 24. Rg3 Nxc2 25. Rb1 Rf8+ 26. Bf4 b6 27. e6 Be8 28. Rxg4 Kb7 29. b4 Be3
30. Ke2 Bh5 31. Bxe3 Bxg4+ 32. Kd2 Na3 33. Rg1 Rf3 34. Ne1 Nc4+ 35. Kd3 Rxe3+
36. Kxc4 Rg8 37. Kd4 Rh3 38. e7 Rxh4 39. Ne4 Bf5 40. Rxg8 Rxe4+ 41. Kc3 Rxe7
42. Ng2 Bb1 43. a4 Rf7 44. Ne3 h5 45. Kb2 Rf3 46. Nc2 Bxc2 47. Kxc2 a6 48. a5
bxa5 49. bxa5 Rf7 50. Rh8 Rf5 51. Rd8 h4 52. Rh8 Rxd5 53. Rxh4 Rc5+ 54. Kb3
Rxa5 55. Rh8 Rb5+ 56. Ka3 a5 57. Ka4 c6 58. Rf8 Rc5 59. Rd8 Re5 60. Rf8 Rb5 61.
Rd8 Rf5 62. Re8 Kc7 63. Ra8 Kb6 64. Rb8+ Kc5 65. Rc8 Rf1 66. Rg8 Kb6 67. Rb8+
Kc7 68. Rh8 Ra1+ 69. Kb3 Rb1+ 70. Ka4 Rb5 71. Rf8 Rg5 72. Ra8 Rg1 73. Kb3 Kb6
74. Rb8+ Kc5 75. Ra8 Rg3+ 76. Ka4 Rg4+ 77. Kb3 Rb4+ 78. Kc3 Kb5 79. Rc8 Rc4+
80. Kb3 a4+ 81. Ka3 Rc3+ 82. Ka2 a3 83. Rb8+ Kc4 84. Rc8 Kc5 85. Ra8 Kd6 86.
Rd8+ Kc7 87. Ra8 Rf3 88. Ra6 Re3 89. Ra8 Rg3 90. Rh8 Kb6 91. Rb8+ Ka6 92. Rc8
Kb7 93. Rf8 Re3 94. Rd8 Rf3 95. Rg8 Rh3 96. Rf8 Ka7 97. Rc8 Rc3 98. Rg8 Re3 99.
Rf8 Kb6 100. Rb8+ Kc5 101. Ra8 Rc3 102. Rc8 Kd5 103. Rd8+ Ke6 104. Rg8 Ke7 105.
Rg6 Kd7 106. Rh6 Rg3 107. Rf6 Kc7 108. Rf8 c5 109. Rf6 c4 110. Ra6 c3 111. Kxa3
c2+ 112. Kb2 c1=Q+ 113. Kxc1 Rg1+ 114. Kd2 Rg4 115. Ke1 Rd4 116. Kf1 Rd1+ 117.
Kf2 Rd7 118. Kg1 Kb7 119. Rh6 Ka7 120. Rh8 Rd1+ 121. Kg2 Rd3 122. Rc8 Rd2+ 123.
Kg1 Rd1+ 124. Kg2 Ra1 125. Rh8 Rb1 126. Rd8 Rb3 127. Rh8 Rb2+ 128. Kg1 Rb1+
129. Kg2 Rc1 130. Rd8 Re1 131. Rf8 Re7 132. Rf6 Rb7 133. Rf4 Rb1 134. Rf2 Rd1
135. Rf8 Rd2+ 136. Kg1 Rd6 137. Rh8 Rc6 138. Rd8 Kb6 139. Rf8 Rc1+ 140. Kg2 Ra1
141. Rb8+ Kc5 142. Rd8 Re1 143. Ra8 Re3 144. Rf8 Re2+ 145. Kg1 Re1+ 146. Kg2
Re5 147. Ra8 Re2+ 148. Kg1 Re4 149. Rd8 Re1+ 150. Kg2 Kb6 151. Rf8 Re7 152. Rh8
Rd7 153. Kf1 Rd5 154. Rh6+ Kc5 155. Ra6 Rd7 156. Ra2 Rd1+ 157. Kf2 Kb6 158. Rc2
Rd3 159. Kg1 Rd1+ 160. Kg2 Ra1 161. Rf2 Rb1 162. Rf1 Rxf1 163. Kxf1 1/2-1/2
Parent - By Venator (Silver) Date 2018-12-09 08:50
Game 20: Trompovsky

AlphaZero immediately starts aggression on the K-side against black's king, but Stockfish counters with an exchange sacrifice. After some nice adventures the game is drawn.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1/2-1/2"]
[PlyCount "106"]
[EventDate "2018.??.??"]

1. d4 {book} Nf6 {book} 2. Bg5 {book} Ne4 {book} 3. Bf4 {book} c5 {book} 4. f3
{book} Qa5+ {book} 5. c3 {book} Nf6 {book} 6. d5 {book} e6 7. e4 exd5 8. exd5
d6 9. Na3 Be7 10. Nc4 Qc7 11. g4 Nbd7 12. Qd2 O-O 13. Ne3 Re8 14. h4 Rb8 15. h5
h6 16. O-O-O b5 17. Nf5 Nb6 18. Nh3 Bxf5 19. gxf5 Nc4 20. Bxc4 bxc4 21. Bxh6
Qa5 22. a3 Rxb2 23. Qxb2 gxh6 24. Rhg1+ Kf8 25. Rd2 Bd8 26. Nf2 Re3 27. Nd1
Rxf3 28. Rdg2 Rxf5 29. Ne3 Rf3 30. Nd1 Rd3 31. Qb8 Rxd5 32. a4 Rd3 33. Kb1 Qc7
34. Qa8 d5 35. Rb2 d4 36. Qg2 Qe5 37. Rb7 Rxd1+ 38. Rxd1 Ne4 39. Rf1 Bf6 40.
Ka2 Nxc3+ 41. Ka3 Nd5 42. Qh3 Nb4 43. Qc8+ Kg7 44. Qg4+ Kf8 45. a5 Nd5 46. Ka4
Nc3+ 47. Ka3 a6 48. Qf5 Qxf5 49. Rxf5 Be7 50. Re5 Bd6 51. Rf5 Be7 52. Re5 Bd6
53. Rf5 Be7 1/2-1/2
Parent - By turbojuice1122 (Gold) Date 2018-12-16 03:57

> Probably 12... Nb6 is already the decisive mistake.


I think perhaps 3...Nf6?! is the decisive mistake. :twisted:
- - By Venator (Silver) Date 2018-12-09 08:55
Game 21: King's Indian Mar del Plata

Another wonderful game full of complications. One wonders why the current top GM's refrain from playing the King's Indian, it's so much more fun than the standard Queen's gambits!

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1/2-1/2"]
[PlyCount "82"]
[EventDate "2018.??.??"]

1. d4 {book} Nf6 {book} 2. c4 {book} g6 {book} 3. Nc3 {book} Bg7 {book} 4. e4 {
book} d6 {book} 5. Nf3 {book} O-O {book} 6. Be2 {book} e5 {book} 7. O-O {book}
Nc6 {book} 8. d5 {book} Ne7 {book} 9. Ne1 {book} Nd7 {book} 10. Be3 {book} f5 {
book} 11. f3 {book} f4 {book} 12. Bf2 {book} g5 {book} 13. b4 {book} Nf6 {book}
14. c5 {book} Ng6 {book} 15. c6 bxc6 16. dxc6 Ne7 17. b5 Qe8 18. a4 Kh8 19. Kh1
Qg6 20. a5 Be6 21. Rc1 g4 22. fxg4 Nxe4 23. Nxe4 Qxe4 24. b6 axb6 25. axb6 Ra2
26. Bf3 Qa4 27. bxc7 Nc8 28. Qd3 Ra3 29. Qc2 Ra2 30. Qb1 Rd2 31. Rc2 Ba2 32.
Qc1 Rxc2 33. Nxc2 e4 34. Be2 Rf7 35. Na3 Bd5 36. Nb5 e3 37. Bh4 Qe4 38. Bf3 Qe5
39. Be2 Qe4 40. Bf3 Qe5 41. Be2 Qe4 1/2-1/2
Parent - - By Venator (Silver) Date 2018-12-09 08:59
Game 22: Ruy Lopez Zaitsev

Great game, AlphaZero attacks, Stockfish defends, lots of unbalanced complications. In the end a draw is the logical outcome.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1/2-1/2"]
[PlyCount "480"]
[EventDate "2018.??.??"]

1. e4 {book} e5 {book} 2. Nf3 {book} Nc6 {book} 3. Bb5 {book} a6 {book} 4. Ba4
{book} Nf6 {book} 5. O-O {book} Be7 {book} 6. Re1 {book} b5 {book} 7. Bb3 {book
} d6 {book} 8. c3 {book} O-O {book} 9. h3 {book} Bb7 {book} 10. d4 {book} Re8 {
book} 11. Nbd2 {book} Bf8 {book} 12. a4 {book} h6 {book} 13. Bc2 {book} exd4 {
book} 14. cxd4 {book} Nb4 {book} 15. Bb1 {book} c5 {book} 16. d5 {book} Nd7 {
book} 17. Ra3 {book} f5 {book} 18. Nh2 {book} Qe7 19. Ndf1 Nxd5 20. Rf3 fxe4
21. Rxe4 Qd8 22. Ng4 N5f6 23. Nxh6+ gxh6 24. Rg3+ Kh8 25. Rh4 Nh7 26. Rhg4 Ndf6
27. b4 Nxg4 28. Qxg4 Ng5 29. h4 Bg7 30. hxg5 Qe7 31. Qh3 Be4 32. Bxe4 Qxe4 33.
g6 Qe6 34. Rg4 Kg8 35. Bxh6 Bxh6 36. Qxh6 Re7 37. Rh4 Qf6 38. Ne3 Qg7 39. Qh5
Qa1+ 40. Nf1 Qe5 41. Qh6 cxb4 42. Rh3 Qf6 43. Rf3 Qg7 44. Qd2 Re6 45. Qd5 Rae8
46. Re3 Qf6 47. axb5 axb5 48. g7 Kxg7 49. Rg3+ Kh8 50. Qxb5 b3 51. Rh3+ Kg8 52.
Qxb3 R8e7 53. Qb8+ Re8 54. Rg3+ Kh8 55. Qb5 R8e7 56. Rh3+ Kg8 57. Qb8+ Re8 58.
Rg3+ Kh8 59. Qb5 R8e7 60. Rh3+ Kg8 61. Qc4 Qe5 62. Rg3+ Kh8 63. Re3 Qf6 64.
Rh3+ Kg8 65. Rf3 Qe5 66. Rg3+ Kh7 67. Re3 Qf6 68. Qc2+ Kh8 69. Rf3 Qe5 70. Re3
Qf6 71. Rf3 Qe5 72. Rh3+ Kg8 73. Qc8+ Re8 74. Qc2 Kf8 75. Ne3 Ra8 76. Nf1 Rae8
77. Rh4 Qg5 78. Rh8+ Kf7 79. Rh3 Rh6 80. Rf3+ Rf6 81. Rh3 Rh6 82. Qa2+ Ree6 83.
Rf3+ Rhf6 84. Rg3 Qf4 85. Re3 d5 86. Qa7+ Kf8 87. Rh3 Kg8 88. Qh7+ Kf8 89. Qh8+
Ke7 90. Qh7+ Kf8 91. Qh8+ Ke7 92. Qg7+ Rf7 93. Qb2 Ref6 94. Qb7+ Kd6 95. Qb6+
Kd7 96. Qb5+ Kd6 97. Qb8+ Kd7 98. Qb5+ Kd6 99. Ne3 Qxf2+ 100. Kh1 Qd2 101. Qb6+
Kd7 102. Qc5 Qb2 103. Qxd5+ Ke7 104. Qc5+ Kd7 105. Rh5 Qb8 106. Kg1 Qb1+ 107.
Kh2 Qb8+ 108. g3 Rf2+ 109. Kh3 Qd6 110. Qa7+ Ke8 111. Qa8+ Kd7 112. Ng4 R2f5
113. Rh8 Rf8 114. Qa4+ Kd8 115. Qa8+ Kd7 116. Rh7+ R5f7 117. Qa4+ Kd8 118. Rh5
Rf5 119. Qa8+ Kd7 120. Rh7+ R5f7 121. Qb7+ Ke8 122. Qe4+ Kd8 123. Rh6 Qd7 124.
Qa8+ Ke7 125. Qa3+ Ke8 126. Qa8+ Ke7 127. Qa3+ Ke8 128. Qc5 Re7 129. Qh5+ Kd8
130. Qa5+ Qc7 131. Qa8+ Qc8 132. Qa5+ Ke8 133. Qh5+ Kd7 134. Qb5+ Kd8 135. Qd5+
Ke8 136. Qh5+ Kd7 137. Qg5 Ke8 138. Qb5+ Kd8 139. Qa5+ Qc7 140. Qd5+ Rd7 141.
Qa8+ Qc8 142. Qa5+ Qc7 143. Qa8+ Qc8 144. Qa3 Re7 145. Rd6+ Ke8 146. Qa4+ Kf7
147. Rc6 Rh8+ 148. Kg2 Qb7 149. Qf4+ Kg8 150. Nh6+ Rxh6 151. Qxh6 Rg7 152. Qe6+
Kf8 153. Qf6+ Ke8 154. g4 Rd7 155. Qg6+ Kf8 156. Kg3 Qb8+ 157. Kh3 Qb7 158.
Qh6+ Kg8 159. Qg6+ Kf8 160. Qf5+ Kg8 161. Qe6+ Rf7 162. Qd5 Kg7 163. Qe5+ Kh7
164. Qh5+ Kg8 165. Qg5+ Rg7 166. Qd8+ Kh7 167. Qd3+ Kg8 168. Qd8+ Kh7 169. Qd5
Rf7 170. Qd3+ Kg8 171. Qd8+ Kg7 172. Qd6 Kg8 173. Qd5 Kf8 174. Qd8+ Kg7 175.
Qg5+ Kh8 176. Qe5+ Kh7 177. Qd5 Kg7 178. Qe6 Kg8 179. Kg3 Qe7 180. Qg6+ Kh8
181. Qh6+ Kg8 182. Rc8+ Rf8 183. Qxf8+ Qxf8 184. Rxf8+ Kxf8 185. Kf4 Kg8 186.
Ke4 Kg7 187. Kf5 Kf7 188. Kg5 Kg7 189. Kh5 Kh7 190. Kg5 Kg7 191. Kf5 Kf7 192.
Ke5 Kg6 193. Kf4 Kf6 194. Kf3 Ke5 195. Ke3 Kf6 196. Kf2 Ke5 197. Kg3 Kf6 198.
Kg2 Ke5 199. Kf3 Kf6 200. Kf4 Kg6 201. Ke4 Kg5 202. Kf3 Kh6 203. Kf4 Kg6 204.
g5 Kh7 205. Kg4 Kg6 206. Kh4 Kh7 207. Kh3 Kg6 208. Kg4 Kh7 209. Kg3 Kg6 210.
Kh4 Kh7 211. Kg3 Kg6 212. Kg4 Kh7 213. Kf5 Kg7 214. Ke4 Kh8 215. Ke5 Kg7 216.
Kf5 Kf7 217. Ke5 Kg6 218. Kf4 Kh7 219. Kf5 Kg7 220. g6 Kg8 221. Kf6 Kh8 222.
Kg5 Kg7 223. Kh5 Kg8 224. Kh4 Kh8 225. Kg4 Kg7 226. Kg5 Kg8 227. Kf6 Kh8 228.
Kg5 Kg7 229. Kh5 Kg8 230. Kh4 Kh8 231. Kg4 Kg7 232. Kg5 Kg8 233. Kf4 Kh8 234.
Ke5 Kg7 235. Kf5 Kg8 236. Ke5 Kg7 237. Ke4 Kf6 238. Kf3 Ke6 239. Kf2 Kf6 240.
Kg1 Kxg6 1/2-1/2
Parent - By Venator (Silver) Date 2018-12-09 09:02 Upvotes 1
Game 23: Caro-Kann

I just love these complicated encounters! AlphaZero attacks on the K-side, Stockfish on the Q-side. Once again it is impossible for a human to understand what's going on, but in the end it all ends peacefully.

[Event "Computer Match"]
[Site "London, UK"]
[Date "2018.01.18"]
[Round "255"]
[White "AlphaZero"]
[Black "Stockfish 8"]
[Result "1/2-1/2"]
[PlyCount "243"]
[EventDate "2018.??.??"]

1. e4 {book} c6 {book} 2. Nc3 {book} d5 {book} 3. Nf3 {book} Bg4 {book} 4. h3 {
book} Bxf3 {book} 5. Qxf3 {book} e6 {book} 6. d3 {book} Nf6 {book} 7. Bd2 {book
} d4 8. Nd1 Bd6 9. Qe2 e5 10. g3 a5 11. Bg2 a4 12. O-O O-O 13. f4 Nfd7 14. a3
c5 15. Nf2 b5 16. h4 Nc6 17. Bh3 b4 18. Bxd7 Qxd7 19. f5 Qe7 20. axb4 cxb4 21.
g4 a3 22. g5 axb2 23. Rab1 Ra2 24. Ng4 Rc8 25. h5 Nd8 26. h6 g6 27. Nf6+ Kh8
28. Nd5 Qf8 29. Be1 Rc3 30. Bh4 Nc6 31. Qf2 Ne7 32. Nb6 b3 33. cxb3 gxf5 34.
exf5 Rxd3 35. Nc4 Bb8 36. Rxb2 Rxb2 37. Qxb2 Rh3 38. Be1 Qe8 39. Qg2 Rxb3 40.
Nd2 Rb2 41. Qf3 Qc6 42. Qh5 Qe8 43. Ne4 Nd5 44. Qf3 Bc7 45. Bg3 Qg8 46. Qa3 Re2
47. Re1 d3 48. Qxd3 Rxe1+ 49. Bxe1 Nf6 50. g6 hxg6 51. Nxf6 Qd8 52. Nd5 Bb6+
53. Kf1 Bd4 54. Qa6 gxf5 55. Bb4 Qg5 56. Qf6+ Qxf6 57. Nxf6 e4 58. Be7 f4 59.
Bd8 f3 60. Nxe4 Kh7 61. Bg5 f5 62. Nd6 Kg6 63. Bd2 Bc5 64. Nc4 Bf8 65. Ne5+ Kh7
66. Nxf3 Bxh6 67. Bb4 Bf4 68. Kf2 Bc1 69. Kg3 Be3 70. Ne5 f4+ 71. Kg4 f3 72.
Nxf3 Kg6 73. Bc3 Kh7 74. Kf5 Bh6 75. Bb4 Bg7 76. Ng5+ Kh6 77. Ne6 Bh8 78. Bf8+
Kh7 79. Kg5 Ba1 80. Kh5 Bb2 81. Bb4 Bc1 82. Bc3 Bh6 83. Bf6 Bc1 84. Be5 Bd2 85.
Bd4 Bc1 86. Ng7 Bd2 87. Bb2 Bc1 88. Be5 Bd2 89. Ne6 Bc1 90. Bd4 Bd2 91. Nc7 Bc1
92. Bc3 Bf4 93. Nd5 Bh6 94. Nf6+ Kg7 95. Ne4+ Kh7 96. Be5 Bg7 97. Bf4 Ba1 98.
Bh6 Kg8 99. Kg6 Bb2 100. Nc5 Ba1 101. Ne6 Bb2 102. Nc7 Be5 103. Nd5 Ba1 104.
Ne7+ Kh8 105. Be3 Bb2 106. Bf4 Ba1 107. Kf7 Bb2 108. Nd5 Bd4 109. Nc7 Bb2 110.
Ne6 Ba1 111. Bh6 Bb2 112. Bg5 Ba1 113. Bf4 Bb2 114. Bd2 Be5 115. Bc1 Ba1 116.
Bg5 Bb2 117. Bh6 Ba1 118. Ng5 Bb2 119. Bf8 Ba1 120. Nf3 Bc3 121. Kg6 Ba1 122.
Ng5 1/2-1/2
Up Topic The Rybka Lounge / Computer Chess / AlphaZero vs Stockfish: games

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