Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Pin_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Be2 Nxe4 7. O-O Nxc3 8.
bxc3 Bxc3 9. Rb1 Bxd4 10. Qxd4 O-O 11. Bb2 Nc6 *
Position (FEN): r1bq1rk1/pp1p1ppp/2n1p3/8/3Q4/8/PBP1BPPP/1R3RK1 w - - 3 12
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 454
Best move: Qxg7#