1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Nxe4 6. Nc3 Nxc3

Safer than 6... dxc3 when 7. Bxf7+ gives White a very dangerous attack, e.g. 7... Kxf7 8. Qd5+ Ke8 9. Re1 Be7 10. Rxe4 d6 11. Bg5 cxb2 12. Rae1 Rf8 13. Bxe7 (13. Qxc6+ bxc6 14. Rxe7+ Qxe7 15. Rxe7+ Kd8 16. Rf7+ with perpetual check 1/2-1/2 Brueckner-Hecht, Germany 1960) 13... Nxe7 14. Qh5+ Kd7 15. Nd4 c5 16. Qg4+ Kc7 17. Rxe7+ Qxe7? (after 17... Kb8 18. Nc6+ bxc6 19. Qxg7 Rf4 "a position is reached that is extremely difficult to assess" - Neishtadt, "Catastrophe in the Opening" Pergamon 1980.) 18. Rxe7+ Kd8 19. Qg5 h6 20. Rxb7+ hxg5 21. Nc6+ Ke8 22. Re7# 1-0 E.Sokolov-Rushnikov, correspondence 1966-7

7. bxc3 d5 8. Re1+ Be7 9. Bb5 O-O 10. cxd4

10. Nxd4 Nxd4 11. cxd4 Bf5 12. Bd3 Bxd3 13. Qxd3 Bf6 14. Rb1 Re8 15. Bf4 Rxe1+ 16. Rxe1 Qd7 17. h3 c6 18. Qe3 h6 19. c3 Kf8 20. Be5 Bxe5 21. dxe5 b6 22. Qd3 Kg8 23. f4 Re8 24. f5 c5 25. f6 g6 26. c4 d4 27. Re4 Qf5 28. g4 Qg5 29. Qe2 Qc1+ 30. Kg2 Re6 31. Qf3 Qxc4 32. Rxd4 Qxd4 33. Qa8+ Kh7 34. Qf8 Rxf6 0-1 Heidenfeld-Myagmarsuren, Havana Olympiad 1966

10... Nb8 11. Ne5 c6 12. Bd3 Nd7 13. Re3 Nxe5 14. dxe5 f5 15. exf6 Bxf6

15... Rxf6 was the correct move.

16. Qh5 g6 17. Rg3 Bg7 18. Bh6

White could have obtained a winning advantage with 18. Rxg6 hxg6 19. Bxg6 Rf6 20. Qh7+ Kf8 21. Ba3+ Qd6 (21... Rd6 22. Re1 and the threat of Re8+ is decisive) 22. Bxd6+ Rxd6

18... Qf6 19. Bxg7 Qxf2+ 20. Kh1 Qxg3 21. hxg3 gxh5 22. Bxf8 Kxf8 23. Bxh7 Bg4 24. Rf1+ Kg7 25. Bd3 Rf8 26. Kg1 Rxf1+ 27. Kxf1 Kf6 28. Kf2 Bf5 0-1