Chess puzzle (Checkmate)
Opening: Alekhine_Defense, Alekhine_Defense_Other_variations
Moves: 1. e4 Nf6 2. Nc3 g6 3. f4 d6 4. Nf3 Bg7 5. Bc4 c6 6. O-O O-O 7. a4 Qa5 8. d4
Qh5 9. Bd3 Ng4 10. Ne2 Nd7 11. Ng3 Bxd4+ 12. Nxd4 *
Position (FEN): r1b2rk1/pp1npp1p/2pp2p1/7q/P2NPPn1/3B2N1/1PP3PP/R1BQ1RK1 b - - 0 12
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 738
Best move: Qxh2#