Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 d6 6. Be3 Nf6 7. Qd2 Nxd4 8.
Bxd4 e6 9. O-O-O Be7 10. f3 b5 11. a3 Bb7 12. g4 O-O 13. Kb1 Rc8 14. h4 d5 15.
e5 Nd7 16. g5 Qc7 17. f4 b4 18. axb4 Bxb4 19. Qe3 Bxc3 20. Bxc3 *
Position (FEN): 2r2rk1/1bqn1ppp/p3p3/3pP1P1/5P1P/2B1Q3/1PP5/1K1R1B1R b - - 0 20
Black to move.
Themes:  Middlegame  
Puzzle rating: 1146
Best move: d4