Chess puzzle (Advantage)
Moves: 1. e4 e6 2. d3 d5 3. e5 d4 4. Nf3 Ne7 5. Nbd2 c5 6. Nb3 b6 7. Bg5 g6 8. Bf6 Rg8
9. a4 Bb7 10. a5 Bg7 11. Bxg7 Rxg7 12. axb6 axb6 13. Rxa8 Bxa8 14. Qa1 Bxf3 15.
gxf3 Nbc6 16. Bg2 Nxe5 17. Qa4+ Kf8 18. f4 Nd7 19. Kd2 Nf6 20. h3 Ned5 21. Bxd5
Nxd5 22. Qc6 Nxf4 *
Position (FEN): 3q1k2/5prp/1pQ1p1p1/2p5/3p1n2/1N1P3P/1PPK1P2/7R w - - 0 23
White to move.
Themes: Defensive Move Endgame  
Puzzle rating: 1212
Best move: Ra1