Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Three_Knights_Game
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nc3 Bc5 4. Nxe5 d6 5. Nf3 Ng4 6. d4 Bb4 7. Bb5+ c6 8.
Bc4 d5 9. exd5 cxd5 10. Bb5+ Nc6 11. O-O O-O 12. Bg5 Qd6 13. a3 Nxd4 14. Nxd4 *
Position (FEN): r1b2rk1/pp3ppp/3q4/1B1p2B1/1b1N2n1/P1N5/1PP2PPP/R2Q1RK1 b - - 0 14
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 634
Best move: Qxh2#