Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Stanley_Variation
Moves: 1. e4 e5 2. Bc4 Nf6 3. Nc3 c6 4. d3 d5 5. exd5 cxd5 6. Bb5+ Nc6 7. Nge2 Bd6 8.
O-O O-O 9. Bg5 Bg4 10. Nxd5 Nd4 11. Nxf6+ *
Position (FEN): r2q1rk1/pp3ppp/3b1N2/1B2p1B1/3n2b1/3P4/PPP1NPPP/R2Q1RK1 b - - 0 11
Black to move.
Themes:  Opening  
Puzzle rating: 981
Best move: gxf6