[Event "IBM Amsterdam"] [Site "10"] [Date "1970.??.??"] [Round "8"] [White "Donner, Jan Hein"] [Black "Spassky, Boris"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "D26"] [Opening "Queen's Gambit Accepted: Classical Defense"] [Termination "Unknown"] [Annotator "lichess.org"] 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 { D26 Queen's Gambit Accepted: Classical Defense } 6. Nc3 a6 7. dxc5 Qxd1+ 8. Kxd1 Bxc5 9. Bd3 Nbd7 10. Bd2 b6 11. Ne4 Bb7 12. Nxc5 Nxc5 13. Ke2?! { (-0.64 → -1.65) Inaccuracy. Bc4 was best. } (13. Bc4 Nfe4) 13... Nxd3 14. Kxd3 Ne4 15. Ke2 a5 16. b4 Nxd2? { (-1.97 → -0.78) Mistake. Ba6+ was best. } (16... Ba6+) 17. Kxd2?! { (-0.78 → -1.76) Inaccuracy. Nxd2 was best. } (17. Nxd2 Ba6+ 18. Kf3 Rd8 19. Rhd1 axb4 20. a3 Bb7+ 21. Ke2 bxa3 22. Rxa3 O-O 23. f3 Ra8) 17... axb4 18. Rhb1 Ra4 19. Ne1 Ke7 20. Rb2?! { (-2.17 → -2.95) Inaccuracy. f3 was best. } (20. f3 Rd8+ 21. Kc1 g5 22. e4 g4 23. Rb3 f5 24. exf5 Bd5 25. Rd3 b3 26. a3 gxf3) 20... Rha8 21. Nc2 b3 22. Rxb3 Rxa2 23. Rxa2 Rxa2 24. f3 Bc6 25. Ra3 Rxa3 26. Nxa3 Kd6 27. Kc3 Kc5 28. Nc2 Ba4 29. Nb4 Bb5 30. Nc2 Bf1 31. g3 Be2 32. f4 Kd5 33. Nd4 Bg4 34. Kd3 Bf5+ 35. Kc3 Ke4 36. Kd2 Bg4 37. Nb5 Kf3 38. Nd6 Kg2 { Black wins. } 0-1