Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Other_variations
Moves: 1. d4 d5 2. c4 e6 3. cxd5 Qxd5 4. Nc3 Qd8 5. e4 Bb4 6. Nf3 Nf6 7. Qa4+ Nc6 8.
Bd3 Bd7 9. Be3 a5 10. Qc2 O-O 11. O-O Be7 12. e5 Nb4 13. Bxh7+ *
Position (FEN): r2q1rk1/1ppbbppB/4pn2/p3P3/1n1P4/2N1BN2/PPQ2PPP/R4RK1 b - - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 832
Best move: Nxh7