Chess puzzle (Checkmate)
Opening: Semi-Slav_Defense, Semi-Slav_Defense_Accelerated_Move_Order
Moves: 1. d4 d5 2. c4 c6 3. Nc3 e6 4. Bf4 Nf6 5. e3 Bd6 6. Bxd6 Qxd6 7. c5 Qc7 8. b4
e5 9. Nf3 e4 10. Ne5 Nbd7 11. f4 exf3 12. Nxf3 O-O 13. Bd3 Ng4 14. Qe2 Re8 15.
Nd1 Ndf6 16. O-O Ne4 17. Bxe4 dxe4 18. Nd2 *
Position (FEN): r1b1r1k1/ppq2ppp/2p5/2P5/1P1Pp1n1/4P3/P2NQ1PP/R2N1RK1 b - - 1 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 418
Best move: Qxh2#