Chess puzzle (Advantage)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Colorado_Countergambit
Moves: 1. e4 Nc6 2. Nf3 f5 3. e5 d6 4. exd6 cxd6 5. d4 d5 6. Bd3 h6 7. O-O Nf6 8. c3
g5 9. Ne5 Nxe5 10. dxe5 Ne4 11. Qh5+ Kd7 12. Bxg5 *
Position (FEN): r1bq1b1r/pp1kp3/7p/3pPpBQ/4n3/2PB4/PP3PPP/RN3RK1 b - - 0 12
Black to move.
Themes:  Opening  
Puzzle rating: 1318
Best move: Nxg5