Chess puzzle (Checkmate)
Opening: Catalan_Opening, Catalan_Opening_Other_variations
Moves: 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 c5 5. cxd5 Nxd5 6. e4 Nf6 7. e5 Nd5 8. Bg2
Nc6 9. O-O cxd4 10. Nxd4 Nxe5 11. Bf4 Nxf4 12. gxf4 Ng6 13. Nc3 Bc5 14. f5 Bxd4
15. fxg6 hxg6 16. Qa4+ Kf8 17. Rad1 Qc7 18. Qxd4 *
Position (FEN): r1b2k1r/ppq2pp1/4p1p1/8/3Q4/2N5/PP3PBP/3R1RK1 b - - 0 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 720
Best move: Qxh2#