Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 Nc6 4. f4 f6 5. Nf3 fxe5 6. fxe5 Nge7 7. Bb5 Bd7 8. O-O
a6 9. Bxc6 Nxc6 10. Ng5 Rg8 11. Qf3 Qe7 12. Nxh7 O-O-O 13. Bg5 Qb4 14. Bxd8
Nxd8 15. b3 *
Position (FEN): 2kn1br1/1ppb2pN/p3p3/3pP3/1q1P4/1P3Q2/P1P3PP/RN3RK1 b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 896
Best move: Qxd4+