Stockfish 10 prospective on A0 vs SF8 match Game 255

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mwyoung
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Stockfish 10 prospective on A0 vs SF8 match Game 255

Post by mwyoung »

[pgn][Event "Computer Match"] [Site "London, UK"] [Date "2018.01.18"] [Round "255"] [White "AlphaZero"] [Black "Stockfish 8"] [Result "1-0"] [ECO "E41"] [Annotator "Tactical Analysis 2.10 (180s)"] [PlyCount "95"] [EventDate "2018.??.??"] {E41: Nimzo-Indian: Rubinstein: 4...c5 5 Bd3, including Hübner Variation} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. e4 { LiveBook: 337 Games} h6 $146 ({Black should try} 8... e5 $11 9. d5 (9. h3 O-O 10. d5 Ne7 11. Be3 Qa5 12. Bd2 Ng6 13. g3 Bd7 14. Kf1 Ba4 15. Qe1 Qd8 16. Nh2 Bd7 17. Ng4 Nxe4 18. Bxe4 f5 19. Bc2 fxg4 20. hxg4 Rc8 21. Bd1 e4 22. Qxe4 Re8 23. Qf3 Ne5 {Atalik,S (2530)-Itkis,B (2475) Satu Mare 1994 1/2-1/2}) 9... Ne7 10. Rb1 (10. Nd2 Ng6 11. h4 Bd7 12. g3 Qa5 13. Qb3 Ba4 14. Qxb7 O-O 15. Qb2 Rfb8 16. Qa3 Rb6 17. O-O Nf8 18. Nf3 N8d7 19. Bg5 h6 20. Bxf6 Nxf6 21. Rfb1 Ra6 22. Nd2 Bd7 23. Qxa5 Rxa5 24. Rb3 Kf8 {Li,C (2744)-Rapport,R (2675) Tbilisi 2017 1/2-1/2 (54)}) (10. Nh4 h6 11. f4 Ng6 12. Nxg6 fxg6 13. O-O O-O 14. fxe5 dxe5 15. Qe1 {1/2-1/2 (15) Karpman,V (2500)-Ulybin,M (2500) Minsk 1990}) 10... h6 11. h4 Qc7 12. Nh2 h5 13. Nf1 Bd7 14. Ng3 O-O-O 15. Bg5 Neg8 16. O-O Rf8 17. Re1 Kb8 18. Re2 Bg4 19. f3 Bc8 20. Reb2 Nd7 21. Qb3 f6 22. Be3 Ne7 23. a4 Ka8 { Gligoric,S (2535)-Nikolic,P (2485) Novi Sad 1982 0-1 (39)}) 9. e5 $14 dxe5 10. Nxe5 {White is slightly better.} cxd4 11. Nxc6 bxc6 12. O-O dxc3 13. Ba3 Qc7 ( 13... c5 $14) 14. Qf3 $1 $16 {White has strong compensation.} Rb8 15. Bc5 e5 16. Rfe1 ({Better is} 16. Rae1 $16 Be6 17. Qg3) 16... Be6 17. Qg3 Nh5 $1 18. Qe3 Nf4 19. Bc2 f6 20. h4 Qa5 (20... g5 $11 21. g3 {11} Rg8 {7} 22. Kh2 {2} Ng6 {2} 23. h5 {10} Ne7 {3} 24. Rad1 {3} Rd8 {1} 25. Rxd8+ {1} Qxd8 {1} 26. Qxc3 {1 } Qc7 {1} 27. Rd1 {2} Kf7 {2} 28. Rd6 {1} Qc8 {1}) 21. Rab1 $1 Kf7 (21... Rb2 $6 22. Rxb2 cxb2 23. Rb1 $14) 22. g3 Qxa2 {[#]} (22... Nh3+ $16 {keeps fighting.} 23. Kg2 Rb2) 23. Qe4 $1 $18 Qxc4 {Hoping for ...Rxb1.} 24. Qxc6 { Intending Qc7+ and mate.} Nd3 25. Rxb8 $40 {White goes for the king.} Rxb8 26. Qc7+ Kg6 {[#]} 27. Bxd3+ $1 ({Not} 27. Qxb8 e4 $11) 27... Qxd3 28. Qxb8 Bd5 { Strongly threatening ...Qf3.} 29. Kh2 c2 {( -> ...Qf3)} 30. Qb2 (30. Bxa7 { is a self mate.} Qf3 31. Qe8+ Kh7 32. Qh8+ Kxh8 33. Kh3 Qg2+ 34. Kg4 Be6+ 35. Kh5 Qf3+ 36. Kg6 Qg4#) 30... a5 31. Qc1 a4 32. Qe3 Qxe3 (32... Qd1 $142 33. f4 exf4 34. gxf4 Kh7) 33. fxe3 ({Less strong is} 33. Bxe3 a3 $18) 33... Kf5 34. Kg1 Ke4 35. Kf2 Be6 36. Ke2 Bg4+ 37. Kd2 Bd1 38. Rf1 f5 39. Rf2 g6 40. Ba3 Bg4 (40... g5 $142 41. Rf1 Bg4) 41. Kxc2 {White is clearly winning.} Kxe3 42. Bc5+ Ke4 43. Kd2 g5 44. Bf8 f4 45. gxf4 gxf4 46. Ke1 Be6 47. Rd2 Kf5 48. Rd8 { Accuracy: White = 90%, Black = 46%.} 1-0[/pgn]

[d]r1bqk2r/pp3ppp/2nppn2/2p5/2PPP3/2PB1N2/P4PPP/R1BQK2R b KQkq - 0 8

8..h6 is arguably the losing move in this game. And leads to most of Stockfish 8 problems in the game.

Stockfish 10 see that 8..h6? is a mistake. And Stockfish 8 is less certain with its evaluation, but even after a very long think. Stockfish 8 would not play 8..h6 on my system.
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