[Event "Bad Sliac"] [Site "?"] [Round "0"] [White "Maroczy"] [Black "Spielmann"] [Result "1-0"] [ECO "C01"] [Opening "French: Exchange, 4.Bd3 Nc6"] {The significance of the support point c5} 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. c3 Bd6 6. Nf3 Nge7 7. O-O Bg4 8. Re1 Qd7 9. Nbd2 O-O-O {The treatmen t of this opening is an example of how Black can avoid symmetry. The sequel shows, however, that he has pursued the idea too far. He should have castled Kingside.} 10. b4 $1 {After castling on opposite sides, it important to seize the initiative as quickly as possible} 10... Ng6 11. Nb3 Rde8 12. Be3 Nh4 13. Be2 Bxf3 14. Bxf3 Ne7 15. Be2 Nef5 16. Bg5 Nxg2 $5 { Spielman embarked on this promising, but ultimately incorrect piece sacrifice} (16... -- 17. Bxh4 Nxh4 18. Nc5 {winning position}) 17. Kxg2 f6 18. Bd2 Nh4+ 19. Kh1 h5 20. Bf1 Qf5 21. f4 g5 (21... Bxf4 22. Bxf4 Qxf4 23. Qd2 Qf3+ 24. Kg1 Qf5 25. Qf2 Nf3+ 26. Kh1) 22. Qb1 $1 Re4 23. Qd3 g4 24. Nc5 Bxc5 25. bxc5 Nf3 26. Re2 Rhe8 27. Rf2 c6 28. Rxf3 $1 { The easiest way to win. Now White has two powerful Bishops against a rook} 28... gxf3 29. Qxf3 Qd7 30. Bh3 f5 31. Qxh5 Kb8 32. Bxf5 Qe7 33. Qg5 $1 (33. Bxe4 Qxe4+ 34. Kg1 Rg8+ 35. Kf2 Qg2+ 36. Ke3 Qe4+ 37. Kf2 $11) 33... Re2 34. Qxe7 R8xe7 35. Rd1 Rg7 36. Bd3 Rf2 37. f5 a5 38. a4 Ka7 39. Be1 Ra2 40. Bg3 Rf7 41. Be5 1-0