Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Knight_Variation
Moves: 1. e4 e6 2. Nf3 d5 3. d3 dxe4 4. dxe4 Qxd1+ 5. Kxd1 Nc6 6. Nc3 e5 7. Bd3 Bg4 8.
Be3 Bb4 9. Nd5 O-O-O 10. c3 Bf8 11. Ke2 Nge7 12. Nxe7+ Bxe7 13. Bc4 f5 14. Be6+
Kb8 15. exf5 *
Position (FEN): 1k1r3r/ppp1b1pp/2n1B3/4pP2/6b1/2P1BN2/PP2KPPP/R6R b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1415
Best move: e4