Chess puzzle (Checkmate)
Opening: Indian_Defense, Indian_Defense_Spielmann-Indian
Moves: 1. d4 Nf6 2. Nf3 c5 3. g3 cxd4 4. Nxd4 Nc6 5. Bg2 g6 6. O-O Bg7 7. c4 Nxd4 8.
Qxd4 d6 9. Nc3 O-O 10. b3 Qa5 11. Bb2 Qh5 12. Nd5 Nxd5 *
Position (FEN): r1b2rk1/pp2ppbp/3p2p1/3n3q/2PQ4/1P4P1/PB2PPBP/R4RK1 w - - 0 13
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 837
Best move: Qxg7#