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1. e4 e5 2. Nf3 d6 3. h3 
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less common waiting move | 
   1 comment
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3... Nf6 4. Nc3 Be7 5. d4 Nbd7 6. Be3 O-O 7. Qd2 c6 8. O-O-O 
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Up to now, fairly standard hanham formation. 0-0-0 is risky given black's counterplay on the queenside. | 
   
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8... Qc7 9. g4 b5 10. Ne2 c5 
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Better would have been 10...nb6 | 
   
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11. dxe5 dxe5 12. Ng3 
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White prepares a kingside attack, while black hopes his queenside attack will prevail first. | 
   
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12... Bb7 
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Here black decides an open position with pawn exchanges gives better chances if white takes the pawn. | 
   
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13. Bxb5 
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Perhaps better would have been 13 nf5. | 
   
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13... Rfd8 14. Qe2 Nxe4 15. Nxe4 Bxe4 16. Bxd7 Rxd7 17. Rxd7 Qxd7 18. Re1 Qc7 
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The exchanges have left  | 
   
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19. Nd2 Bb7 
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The exchanges have left black with strong bishops but the position is basically even, if unbalanced | 
   
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20. f4 
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White tries to exploit the position of the black bishop | 
   
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20... Bh4 
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this is an essential intermediate move | 
   
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21. Rf1 exf4 22. Bxf4 Qe7 
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Black offers a queen exchange  | 
   
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23. Qh2 
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White declines the queen exchange, overestimating kingside chances. Now white's position deteriorates. | 
   
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23... Re8 
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Now black controls the e-file, and threatens checkmate via a queen sac at e1. | 
   
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24. b3 
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prevents the checkmate | 
   
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24... Qe2 
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Black seizes his seventh rank | 
   
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25. Qg1 Bg2 
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a strong move, driving away the rook while threatening the h pawn. | 
   
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26. Rd1 Bxh3 27. Qxc5 
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White wants to keep the material even, but does not see the danger to his king. | 
   
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27... Qxg4 
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Black could have played 27...QxR  here, since QxR is met by Re1 .  | 
   
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28. Qb5 
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Oblivious to the danger. | 
   
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28... Qxd1+ 
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QxR !!, a devastating surprise. | 
   
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