Chess puzzle (Checkmate)
Opening: Grunfeld_Defense, Grunfeld_Defense_Exchange_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8.
Ne2 c5 9. Be3 Nc6 10. O-O a6 11. dxc5 Qc7 12. Rb1 Ne5 13. Bd5 Ng4 14. Qb3 *
Position (FEN): r1b2rk1/1pq1ppbp/p5p1/2PB4/4P1n1/1QP1B3/P3NPPP/1R3RK1 b - - 6 14
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 670
Best move: Qxh2#