Chess puzzle (Advantage)
Opening: Alekhine_Defense, Alekhine_Defense_Maroczy_Variation
Moves: 1. e4 Nf6 2. d3 d5 3. Nd2 dxe4 4. dxe4 Nc6 5. Bc4 e6 6. Ngf3 Bc5 7. O-O O-O 8.
e5 Nd5 9. Ne4 Be7 10. Bg5 Bxg5 11. Nfxg5 h6 12. Qh5 *
Position (FEN): r1bq1rk1/ppp2pp1/2n1p2p/3nP1NQ/2B1N3/8/PPP2PPP/R4RK1 b - - 1 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1563
Best move: Nf4