Chess puzzle (Advantage)
Moves: 1. d4 d5 2. Bf4 Bg4 3. Nf3 e6 4. e3 Bd6 5. h3 Bh5 6. g4 Bg6 7. Ne5 Bxe5 8. Bxe5
Nf6 9. Bd3 Bxd3 10. Qxd3 Nc6 11. c3 Nxe5 12. dxe5 Ne4 13. Nd2 O-O 14. Nxe4 dxe4
15. Qxe4 c6 16. Qd4 Qg5 17. O-O-O Rad8 18. Qxa7 Ra8 19. Qxb7 Rxa2 20. f4 Ra1+
21. Kc2 Qg6+ 22. Kb3 *
Position (FEN): 5rk1/1Q3ppp/2p1p1q1/4P3/5PP1/1KP1P2P/1P6/r2R3R b - - 4 22
Black to move.
Themes: Defensive Move Endgame  
Puzzle rating: 1663
Best move: Raa8