Chess puzzle (Advantage)
Moves: 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Be3 c5 7. Qd2 cxd4 8. Nxd4
Nc6 9. O-O-O a6 10. Be2 Ng4 11. Bg1 Qa5 12. h3 Nf6 13. Kb1 Bd7 14. g4 b5 15.
Nb3 Qc7 16. g5 b4 17. Nd5 Nxd5 18. exd5 Na5 19. Qxb4 Nxb3 20. cxb3 Bf5+ 21. Ka1
*
Position (FEN): r4rk1/2q1ppbp/p2p2p1/3P1bP1/1Q3P2/1P5P/PP2B3/K2R2BR b - - 2 21
Black to move.
Themes:  Middlegame  
Puzzle rating: 1770
Best move: Qc2