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1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Bc4 c6 5. Nf3 b5 6. Bd3 b4 7. Ne2 e5 8. c3 bxc3 9. bxc3 g6 10. Qb3 Bg7 11. Ng5 O-O 12. Bc4 
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White is imprudently focused on attacking f7, while neglecting development | 
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12... d5 
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 Black decides to open up the position with a pawn sac | 
   
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13. exd5 Nxd5 14. Bxd5 cxd5 15. Qxd5 
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White has won a pawn and threatens the rook but has not castled. Black begins a vigorous counterattack. | 
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15... Ba6 
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Protects the rook and keeps white from castling. | 
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16. c4 
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c4? blocks the bishop, but opens up the long diagonal.  | 
   
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16... exd4 17. Nxd4 
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Nxd4? exposes white to a nasty pin. Better was O-O | 
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17... Nb6 
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exploits the long diagonal and the pin on the knight. | 
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18. Qxd8 Raxd8 19. Nc2 
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Rather than lost the piece, white decides to give up the exchange. | 
   
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19... Rfe8+ 
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intervening check. The king can't move to f1 because of Bxc4 , and Ne3 loses the rook. | 
   
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20. Be3 
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Forced, but this pin allows black to eliminate the strong bishop and any play along the long diagonal. | 
   
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20... Bxa1 21. Nxa1 Nxc4 22. Nc2 Nxe3 23. fxe3 
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To get the king out of the way. | 
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23... h6 24. Nf3 Rdc8 25. Nfd4 Bc4 26. a3 Bd5 27. O-O Rc3 
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On move 27 (!!) white can finally castle, but black is piling on the pressure. | 
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28. Re1 Bb3 29. Re2 Bxc2 30. Nxc2 Rec8 31. Nd4 Rxa3 
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Black's pressure has netted another pawn and now the a pawn is passed. | 
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32. Nb5 Ra1+ 33. Kf2 a5 34. e4 Rc5 35. Nd6 a4 36. e5 a3 37. Ne8 Rb1 38. Nf6+ Kh8 
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If 39 e6, fxe 40 Rxe6 Kg7 white has nothing. | 
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