Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Nyezhmetdinov-Rossolimo_Attack
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 cxd4 5. b3 a6 6. Be2 e5 7. Bb2 Nf6 8.
O-O Nxe4 9. f4 Bc5 10. fxe5 d3+ 11. Kh1 Qh4 12. Bxd3 *
Position (FEN): r1b1k2r/1p1p1ppp/p7/2b1P3/4n2q/1P1B4/PBPP2PP/RN1Q1R1K b kq - 0 12
Black to move.
Themes: Pin Opening Mate in 1 
Puzzle rating: 1667
Best move: Ng3#