Chess puzzle (Checkmate)
Opening: Old_Indian_Defense, Old_Indian_Defense_Two_Knights_Variation
Moves: 1. c4 e5 2. Nc3 d6 3. Nf3 Nf6 4. d4 exd4 5. Nxd4 Bd7 6. g3 Nc6 7. Bg2 Nxd4 8.
Qxd4 c6 9. b3 Be6 10. Bb2 d5 11. cxd5 cxd5 12. O-O Be7 13. Rfd1 O-O 14. Nxd5
Nxd5 *
Position (FEN): r2q1rk1/pp2bppp/4b3/3n4/3Q4/1P4P1/PB2PPBP/R2R2K1 w - - 0 15
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 825
Best move: Qxg7#