Chess puzzle (Advantage)
Opening: Blumenfeld_Countergambit, Blumenfeld_Countergambit_Other_variations
Moves: 1. Nf3 Nf6 2. d4 e6 3. c4 c5 4. Bg5 Be7 5. e3 O-O 6. Bd3 d6 7. O-O Nc6 8. Qc2
Qb6 9. dxc5 Qxc5 10. a3 Ne5 11. Bxh7+ *
Position (FEN): r1b2rk1/pp2bppB/3ppn2/2q1n1B1/2P5/P3PN2/1PQ2PPP/RN3RK1 b - - 0 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 977
Best move: Nxh7