Chess puzzle (Advantage)
Opening: Pirc_Defense, Pirc_Defense_Other_variations
Moves: 1. e4 d6 2. d4 g6 3. Nf3 Bg7 4. Be3 Nf6 5. Nc3 O-O 6. Bd3 Re8 7. Qd2 Ng4 8.
O-O-O Nxe3 9. Qxe3 e5 10. Nd5 exd4 11. Nxd4 Qh4 12. f4 Nc6 13. Nxc7 *
Position (FEN): r1b1r1k1/ppN2pbp/2np2p1/8/3NPP1q/3BQ3/PPP3PP/2KR3R b - - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1342
Best move: Bxd4