1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bf4 Qa5+ 12. Bd2 Qc7 13. O-O-O Ngf6 14. Ne4 O-O-O 15. g3 Nxe4 16. Qxe4 Bd6 17. c4 c5 18. Bc3 Nf6 19. Qe2 cxd4 20. Rxd4 All theory until this point. Now more common is 20. Nxd4 a6, where black has achieves a comfortable position and scores about 50%. 20... Bc5 A natural mov e, it is actually preparing a pawn sacrifice on f6; however, better was the simple Rd7 followed by Rhd8 with equality. 20... Rd7 21. Kb1 Qc6 22. Rhd1 Rhd8 23. g4 Bf4 24. Rxd7 Rxd7 25. Rxd7 Qxd7 26. Ne5 Bxe5 27. Bxe5 Ne8= A position that dynamically favors white since his bishop is more active than black's knight; however, in the long run, black's queen and knight work better together than white's queen and bishop. 21. Rf4 Bd6 22. Rxf6 gxf6 23. Bxf6 Qa5 24. a3 24. Kb1?? Qf5+ 24... Rhg8 25. Bxd8 Rxd8 Black's pawn sacrifice results in white having a very difficult postion to play since the rook is tied to the h-pawn. Rybka suggests 26 Rd1, giving back the pawn with an equal game 26. Kb1 Bxa3 27. bxa3 Qxa3 28. Rd1 White can do no better than allow perpetual. Critical is: 28. Ne5? Rd6 29. c5 Rd4 30. Nc4 Qb4+ 31. Nb2 Rd2 32. Qe5 Rxb2+! 33. Qxb2 Qe4+ 28... Qb3+ 1/2-1/2 [David Plotkin]