Chess puzzle (Equality)
Moves: 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 Nf6 7. Bc4 Qa5 8.
O-O O-O 9. Bb3 d6 10. h3 Bd7 11. f4 Rfe8 12. Qe1 Nxd4 *
Position (FEN): r3r1k1/pp1bppbp/3p1np1/q7/3nPP2/1BN1B2P/PPP3P1/R3QRK1 w - - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1580
Best move: Bxd4