[Event "RUS"] [Site "Ch URS Moscow (19)"] [Round "0"] [White "Tolush"] [Black "Kotov"] [Result "1-0"] [ECO "B40"] [Opening "Sicilian: Open, 2...e6, 4.Nxd4"] {White's chances agains the Paulsen set-up} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 Nc6 7. Bg2 Bd7 8. Nde2 a6 9. O-O b5 10. a3 Qc7 11. h3 Be7 12. Kh1 O-O {This pawn position occurs frequently, with various differences in the placing of pieces. The present example is known in the books as the Scheveningen Variation, for Paulsen's name is reserved for the form with Black's Queen Knight developed at d6. We shall not bother about the distinction here, as our concern is with the pawn skeleton, which is the same in both cases. Variations are possible in the White position too. Here, his King bishop stands on g2, discouraging Black from playing ... Pd5; but the same effect could be obtained by Be2, Pf4 and Bf3} 13. g4 {The Kingside attack beings. Notice, however, that the majority of Black pawns in the centre is held immobile by the placing of the White pieces} 13... Kh8 (13... Rfd8 { Another plan, withdrawing the Knight to e8. On d8, the Rook would be better placed for furture operations inthecentre}) 14. Ng3 (14. g5 Ng8 { then to counterattack with ... Pf6 or ... Pf5}) 14... b4 15. axb4 Nxb4 16. g5 Ng8 17. f4 Bc6 $2 {Too slow} (17... d5 $1 $132 18. exd5 exd5 19. Nxd5 Nxd5 20. Qxd5 Bb5 { the advance of White's Kingside pawns having left his king none too safe}) 18. Nce2 Bb5 19. Bd2 d5 20. Bc3 dxe4 21. Nh5 f6 22. Nxg7 $3 { With this pretty sacrifice White makes a breach in the Black lines} 22... Bxe2 (22... Kxg7 23. Nd4 Bc4 24. Bxe4 Kh8 25. Qh5) 23. Qxe2 Kxg7 24. Bxe4 Nd5 25. Qh5 Rfd8 (25... Rf7 26. g6 hxg6 27. Qxg6+ Kf8 28. Rg1) 26. Rg1 Bc5 (26... Nxc3 27. gxf6+ Kxf6 28. Rg6+ $1) 27. gxf6+ Kf8 28. Rxg8+ $1 Kxg8 29. Bxh7+ Kf8 ( 29... Qxh7 30. f7+) 30. Qg6 Nxf6 (30... Qf7 31. Qh6+ Ke8 32. Bg6) 31. Qxf6+ Qf7 32. Qh6+ Ke7 33. Qg5+ Kd7 (33... Kd6 34. Rd1+ Kc6 35. Be4+) 34. Qxc5 Qxh7 35. Rd1+ Ke8 36. Qc6+ Kf8 37. Bb4+ Kf7 38. Qc7+ Kg6 39. f5+ { The finishing touch in an attack conducted in masterly style by Tolush} 39... Kh6 40. Qf4+ Kg7 41. Qg5+ 1-0