Chess puzzle (Equality)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. d3 Bc5 5. Nc3 Nf6 6. Be3 Bxe3 7. fxe3 d6 8.
Qd2 Qe7 9. O-O-O Be6 10. Bb5 Qd7 11. Nd5 O-O-O 12. d4 Nxd5 *
Position (FEN): 2kr3r/pppq1pp1/2npb2p/1B1np3/3PP3/4PN2/PPPQ2PP/2KR3R w - - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1449
Best move: exd5