Chess puzzle (Crushing)
Opening: Vienna_Game, Vienna_Game_Stanley_Variation
Moves: 1. e4 e5 2. Bc4 Nf6 3. Nc3 Bb4 4. d3 Nc6 5. Nf3 d6 6. O-O Bg4 7. Bg5 Nd4 8. Nd5
Bc5 9. b4 Bb6 10. a4 Nxf3+ 11. gxf3 Bh3 12. a5 Bxf1 *
Position (FEN): r2qk2r/ppp2ppp/1b1p1n2/P2Np1B1/1PB1P3/3P1P2/2P2P1P/R2Q1bK1 w kq - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 2040
Best move: axb6