Замороженный йогурт (Frozen yogurt)

Anatoly Yevgenyevich Karpov – Mariya Olehivna Muzychuk
4th Trophée Anatoly Karpov; Cap d’Agde, October 24, 2015
Grünfeld Defence D77

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d5 5. Bg2 dxc4 6. Na3 c3 7. bxc3 0-0 8. 0-0 c5 9. Qb3 Nc6 10. Rd1 Na5 11. Qb2 Bf5 12. h3. Varying from 12. Bf4 Qb6 as in Karpov – M. Muzychuk, 2nd Trophée Anatoly Karpov, Cap d’Agde 2013. 12. ... Rc8 13. Bd2 Qb6 14. Qxb6 axb6 15. Be1 Rfd8 16. e3 Be4 17. Ng5 Bxg2 18. Kxg2 h6 19. Nf3 Ne4 20. Rab1 cxd4 21. cxd4 Nc3 22. Bxc3 Rxc3 23. Nb5 Rc2 24. a3 Nc4 25. Kg1 Nd6 26. Nxd6 Rxd6 27. Rdc1 Rxc1+ 28. Rxc1 Rc6 29. Rb1 e6 30. a4. Karpov has kept a lasting initiative by skillful, quiet maneuvers, in his best style. 30. ... f6 31. Kg2 Bf8 32. g4 Bd6 33. Rb5 Kf7

34. h4. Another tempting way of squeezing Black is 34. d5 exd5 35. Nd4 when White recovers his Pawn with interest. 34. ... Bc7 35. h5 Rc4 36. a5 bxa5 37. Rxb7 gxh5 38. gxh5 Ke7 39. Nd2 Rc2 40. Ne4 f5? This looks like the losing move. Black should have played 40. ... Rc4 since after 41. Kf3 f5 42. Nc5 Kd6 43. Ra7 Bb6 44. Nb7+ (the main point is that Black can now reply to 44. Ra6 with 44. ... Kc6) 44. ... Kd5 45. Ra6 Rb4 46. Nxa5 Rb5 47. Nb7 e5 White’s extra Pawn is very difficult to convert into a win. 41. Nc5 Kd6 42. Ra7 Bb6 43. Ra6 Rxc5. Black, nolens volens, must sacrifice the Exchange, since 43. ... Kc6 fails to 44. Na4. 44. dxc5+ Kxc5 45. Kf3 Kb5. Objectively speaking, Black has not sufficient compensation for the Exchange, and after the comparatively better 45. ... Kc6 (threatening to trap the Rook by ... Kc6-b7) 46. Ra8 Kb7 47. Rg8 a4 48. Ke2 a3 49. Kd3 f4 50. exf4 Bxf2 51. Kc2 White also wins in a similar manner to the text. 46. Ra8 a4 47. Ke2 e5 48. Kd3 e4+ 49. Kc2 f4 50. exf4 Bxf2 51. Re8 e3 52. f5 e2 53. Rxe2 Bd4 54. Re4 Kc4 55. Rxd4+ 1 : 0.

Anatoly Yevgenyevich Karpov vs. Mariya Olehivna Muzychuk. Photo: Europe Échecs.