Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 Nc6 4. a3 e6 5. Bd3 Bd6 6. O-O e5 7. dxe5 Nxe5 8. b3
Nxd3 9. cxd3 Bg4 10. h3 Bh5 11. Nbd2 O-O 12. b4 a6 13. Qb3 Re8 14. Bb2 b5 15.
Rac1 Rb8 16. Qc3 Bg6 17. g4 Qd7 18. Nh4 Nxg4 *
Position (FEN): 1r2r1k1/2pq1ppp/p2b2b1/1p1p4/1P4nN/P1QPP2P/1B1N1P2/2R2RK1 w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 862
Best move: Qxg7#