[Event "Leeuwarden"] [Site "?"] [Round "0"] [White "Van den Bosch"] [Black "Kramer"] [Result "0-1"] [ECO "A48"] [Opening "Neo-King's Indian"] 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 c6 5. Qd2 Bg7 6. Bh6 O-O 7. h4 Bf5 { Black's opening play has been risky, and his task now would not be easy if White proceeded with 8. Ne5! followed by Pf3 andPg4} 8. O-O-O $6 { This is much too venturesome} (8. Ne5 -- 9. f3 -- 10. g4) 8... Bxh6 9. Qxh6 Ng4 10. Qd2 Nxf2 11. e4 Nxh1 (11... Nxe4 12. Nxe4 dxe4 (12... Bxe4 13. Qh6) 13. Ne5 {strong White attack}) 12. Qh6 (12. exf5 Ng3 {Black would have no difficulty}) 12... f6 13. exf5 Qe8 14. h5 { The idea of this pawn sacrifice is to keep the Black Queen away from g6} 14... gxh5 (14... gxf5 15. Qf4 e6 16. Nh4 -- 17. Be2 {winning the Black Knight}) 15. Ne4 $5 {A new sacrifice At the same time White deprives the outlying Black knight of its escape squares, and also threatens 16. Nc5. Decidedly a many-sided move} 15... Nd7 (15... dxe4 16. Bc4+ Kh8 17. Nh4 Rg8 18. Bxg8 Kxg8 19. Rxh1) 16. Bc4 $5 { It is rare indeed for a player to "fork himself" in this way} 16... dxc4 17. Rxh1 Qf7 18. Rh3 {with the aim of preventing ... Qg7} 18... Kh8 19. Nh4 Rg8 20. Ng6+ Rxg6 21. fxg6 Qxg6 22. Qe3 Qxg2 {The attack is broken and Black's advantage in material must win th e game. "Sacrificing is easy enough", a chess master once remarked, "the problem is how to win your material back!"} 23. Rxh5 Rg8 24. Nf2 Qf1+ 0-1