Chess puzzle (Crushing)
Opening: Philidor_Defense, Philidor_Defense_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 c5 5. Bb5+ Bd7 6. Bxd7+ Nxd7 7. Nf5 Qf6
8. Nc3 g6 9. Nd5 Qd8 10. Ng3 Ngf6 11. Bg5 Qa5+ *
Position (FEN): r3kb1r/pp1n1p1p/3p1np1/q1pN2B1/4P3/6N1/PPP2PPP/R2QK2R w KQkq - 6 12
White to move.
Themes: Defensive Move Opening  
Puzzle rating: 2046
Best move: b4