Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Staunton-Cochrane_Variation
Moves: 1. e4 c5 2. c4 Nc6 3. d3 Nf6 4. Be3 Qa5+ 5. Nc3 Qb4 6. Qd2 Nd4 7. Nge2 e5 8. a3
Qa5 9. Qd1 d6 10. g3 *
Position (FEN): r1b1kb1r/pp3ppp/3p1n2/q1p1p3/2PnP3/P1NPB1P1/1P2NP1P/R2QKB1R b KQkq - 0 10
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1172
Best move: Nf3#