[Event "Moscow Central CC International"] [Site "Moscow"] [Date "1960.06.02"] [Round "8"] [White "Simagin, Vladimir Pavlovich"] [Black "Kortschnoj, Viktor Lvovich"] [Result "0-1"] [Annotator "Lang, JJ"] [Variant "Standard"] [ECO "D91"] [Opening "Grünfeld Defense: Three Knights Variation, Petrosian System"] [Source "https://lichess.org/study/Mez4h4WA/bdiz6QhF"] [Orientation "white"] 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8. Nf3 exd5 9. e3 O-O 10. Be2 c6 11. O-O Be6 12. Na4 Nd7 13. Rc1 Qe7 14. Ne1 Rae8 15. Nd3 Bf5 16. Bf3 Nb6 17. Nac5 Nc4 18. b3 Nd6 19. Re1 { This is the game referenced after Goryachkina's 25. ... h5! above. Annotations by JJ Lang. Don't hold Robert accountable for any mistakes here. } 19... h5! 20. g3 { If White plays on the queenside, Black can eventually make use of the ... h7-h5 push via both ... Bf5-g4 and ... Bg7-h6. } (20. b4 Rd8 21. a4 b6 22. Na6 Rc8 23. Nf4 Qd7 24. Qb3 Bg4 25. Be2 Bh6 $15 { when Black's bishops are keeping White's kingside a bit disrupted, slowing down queenside play and preparing further advances on the kingside. }) 20... h4 21. Bg2 Bc8 22. Nf4 hxg3 23. hxg3 Qg5 (23... Bh6 { The engine likes immediately occupying the h-file: } 24. Nfd3 Kg7 25. Ne5 Rh8 26. b4 Bg5 27. f4 Bf6 28. a4 a6 29. a5 Rh7 $17 { with the other rook joining the party shortly. }) 24. Bh3 f5 { White's point is to contest the h-file, for instance after: } (24... Bh6 25. Bxc8 Rxc8 26. Kg2 Rfe8 (26... Kg7?? 27. Nce6+ fxe6 28. Nxe6+ $18 { is another benefit of trading off Black's light-squared bishop. }) (26... Rce8 27. Nd7 $16) 27. Rh1) 25. Bg2 Qh6 26. Nxd5 { Practically, White's only chance. Slow moves such as } (26. Rc2 { allow Black to gain decisive space on the kingside with } 26... g5 27. Nfd3 Ne4 28. b4 Bf6 29. b5 Re7 30. Ne5 Rh7 { And threats on the h-file, combined with ... f5-f4, is a strategically winning position. } 31. Nxe4 dxe4 32. Rc5 Be6 33. Qc2 Bxe5 34. Rxe5 f4 $19) 26... cxd5 27. Bxd5+ Rf7!? (27... Kh7 28. Kg2 Qg5 29. Rh1+ Bh6 30. Nd3 Kg7 $17) 28. e4 fxe4 29. Nxe4 Be6! { Astute tactical play from Black, using the open h-file to create a mating net on h1. } 30. Nxd6 Bxd5 31. Rxe8+ Rf8 32. Re4 (32. Rxf8+? Bxf8 33. f3 Qe3+ $19) 32... g5 33. Rc7 Qxd6 34. Ree7 { Black is still for choice: } 34... Bf6 35. Red7 Qe6 36. Rxd5 Qxd5 37. Qh5 Bg7 38. Qg6 Qxd4 39. Qe6+ Kh7 40. Qh3+ Kg6 41. Qe6+ Rf6 42. Qe2 b5 43. g4 Kh6 { 0-1 Black wins. } 0-1