1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. f3 e6 6. e4 exd5 7. e5 Qe7 8. Qe2 Ng8 9. Nc3 Bb7 10. Nh3 c4 11. Be3 axb5 12. O-O-O Qb4 13. Nf4 Ne7 14. Qf2 14. Bb6 h5 15. Rxd5 Qxc3+! 16. bxc3 Nxd5 17. Nxd5 Bxd5 18. Qd2 Be6 Lalic-Khalifman, Linares Open 1997 19. Bc7! 14... Qa5 15. Bb6 Qa6 16. Rxd5 Bc6 16... Nxd5 17. Ncxd5 Bxd5 18. Nxd5 Qxa2 19. Nc7+ Kd8 20. Nxa8+ Kc8 21. Bc5 Qa1+ 22. Kc2 Qa4+ 23. Kc1 Qa1+ 24. Kc2 Qa4+ 1/2, Meessen-Vandevoort, Belgium 2003 17. Rxb5!? 17. a3 Ng6 18. Nxg6 hxg6 19. Rxb5 Bxb5 20. Nd5 Qb7 21. Nc7+ Kd8 22. Nxb5+ Kc8 23. Bxc4 Qc6 24. Kb1 Lim Chuing Hoong-Wong Zi Jing, Penang 2000 17. a4 Nc8 18. Rxb5 Bxb5 19. Nfd5 Bd6 20. exd6 O-O 21. Nc7 Qb7 22. Nxa8 Bxa4 23. Bc5 Qxa8 24. Bxc4 Moranda-Heimann, Neuhausen 2007 17... Bxb5 18. Ne4 (threatening mate in one!) 18... Nc8 18... Nf5 19. Nd5 Qxa2 20. Nc7+ Kd8 (20... Ke7? 21. Qc5+) 21. Nxb5+ Kc8 22. Nec3 Qa1+ 23. Nb1 Qa4 24. N1c3 and Black should probably repeat moves. 19. Nd5 Nxb6 19... Ra7 20. Bxa7 Qxa7 21. Qxa7 Nxa7 22. Nc7+ Kd8 23. Nxb5 Nxb5 24. Bxc4 Nd4 25. Ng5 and with three pawns for the piece plus Black's terrible development, White isn't worse. 20. Nc7+ Kd8 21. Nxa6 Rxa6 22. Nc3 22. Nc5!? Bxc5? (22... Rxa2) 23. Qxc5 Bc6 24. b4! Kc7 (24... Re8!? 25. b5 Bxb5 26. Qxb5 Kc7) 25. Bxc4 (25. b5? Rxa2 26. bxc6 Nxc6) 25... Nxc4 26. Qxc4 22... Bc6 23. Bxc4 Nxc4 24. Qh4+ Be7 25. Qxc4 Ever seen a game with this material situation? It's very hard to give a different verdict than "unclear", and the rest of the game proves it to be reasonably balanced as well. 25... Rf8 26. b4 Rb6 27. a3 Na6 28. Nd5 Bxd5 29. Qxd5 Nc7 30. Qd3 Kc8 31. Kb2 f6 32. Qxh7 fxe5 33. Qxg7 Re6 34. Kb3 Nb5 35. Re1 Nd4+ 36. Ka2 Rff6 37. Qh8+ Rf8 38. Qg7 Rff6 39. Qh8+ 1/2-1/2