Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Vienna_Gambit
Moves: 1. e4 e5 2. Nc3 Nc6 3. f4 f6 4. Nf3 Bc5 5. Bc4 d6 6. Na4 b6 7. d3 a6 8. Bd5
Nge7 9. Bxc6+ Nxc6 10. Nxc5 bxc5 11. Nh4 O-O 12. O-O f5 13. fxe5 *
Position (FEN): r1bq1rk1/2p3pp/p1np4/2p1Pp2/4P2N/3P4/PPP3PP/R1BQ1RK1 b - - 0 13
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1377
Best move: Qxh4