Chess puzzle (Equality)
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Qe7 5. Nc3 c5 6. Bb5+ Bd7 7. Bxd7+ Nxd7
8. Nf5 Qe5 9. O-O O-O-O 10. f4 Qf6 11. Rb1 b6 12. Nb5 Kb8 13. Nbxd6 Bxd6 14.
Qxd6+ Ka8 15. Rd1 Nh6 16. Nxh6 *
Position (FEN): k2r3r/p2n1ppp/1p1Q1q1N/2p5/4PP2/8/PPP3PP/1RBR2K1 b - - 0 16
Black to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 1615
Best move: Nb8