Chess puzzle (Crushing)
Opening: Slav_Defense, Slav_Defense_Other_variations
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Bf5 4. Qb3 Qc8 5. cxd5 cxd5 6. Nxd5 e6 7. Ne3 Bg6 8.
g3 Nc6 9. Qb5 Bb4+ 10. Bd2 Bxd2+ 11. Kxd2 Ne7 12. Bg2 O-O 13. Rc1 Qd7 14. Nf3
a6 15. Ne5 *
Position (FEN): r4rk1/1p1qnppp/p1n1p1b1/1Q2N3/3P4/4N1P1/PP1KPPBP/2R4R b - - 1 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1709
Best move: Qxd4+