[Event "Nice"] [Site "?"] [Round "0"] [White "Colle"] [Black "O'Hanlon"] [Result "1-0"] [ECO "D04"] [Opening "Colle: 3...c5 4.c3"] {A. EXPLOSION ON H7} 1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 e6 5. Bd3 Bd6 6. Nbd2 Nbd7 7. O-O O-O 8. Re1 Re8 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 cxd4 12. Bxh7+ { The full consequences of this sacrifice are difficult to assess in thisposition } 12... Kxh7 13. Ng5+ Kg6 (13... Kg8 14. Qh5 { White should obtain no more than a draw} 14... Nf6 $2 (14... Ne5 15. Rxe5 (15. Qh7+ Kf8 16. Ne4 Ng6 17. Nxd6 Qxd6 18. h4 Ke7 19. h5 Rh8 20. Bg5+ Ke8 (20... Kf8 21. hxg6 Rxh7 22. gxh7 $18) 21. Qxg7 Rxh5 22. Qf6 Qe7 $19) 15... Bxe5 16. Qxf7+ Kh8 17. Qh5+ {White must take a perpetual check}) (14... Qf6 15. Qh7+ Kf8 16. Ne4 Qe5 17. cxd4 Qd5 $2 (17... Qxd4 18. Qh8+ Ke7 19. Bg5+ Nf6 20. Qxg7 $16) (17... Qxh2+ 18. Qxh2 Bxh2+ 19. Kxh2 $11) 18. Qh8+ Ke7 19. Qxg7 { White's attack continues violently}) 15. Qxf7+ Kh8 16. Re4 Nxe4 (16... Bxh2+ 17. Kxh2 Nxe4 18. Qh5+ Kg8 19. Qh7+ Kf8 20. Qh8+ Ke7 21. Qxg7+ Kd6 22. Nf7+ { winning the Queen. The Black K takes the place of the Bishop}) 17. Qh5+ Kg8 18. Qh7+ Kf8 19. Qh8+ Ke7 20. Qxg7#) 14. h4 $1 Rh8 (14... -- 15. h5+ Kf6 16. Qf3+) (14... f5 15. h5+ Kf6 16. Qxd4+ Be5 17. Qh4 g6 18. f4 { White's attack slices through Black's position like a knife through butter}) 15. Rxe6+ $3 {This is based on removing the guard "... Pf5" and threats of Knight forks on f7. If ef then ... Pf5 can't block Qd3+} 15... Nf6 (15... fxe6 16. Qd3+ Kf6 17. Qf3+ Kg6 18. Qf7+ Kh6 19. Nxe6+ $18) 16. h5+ $1 Kh6 (16... Rxh5 17. Qd3+ Kh6 18. Qh7# {based on pins on the Knight}) 17. Rxd6 Qa5 18. Nxf7+ Kh7 19. Ng5+ Kg8 20. Qb3+ 1-0