Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 Nf6 7. Bc4 O-O 8.
O-O a6 9. Bb3 d6 10. f4 Ng4 11. Nxc6 bxc6 12. Qe1 Nxe3 13. Qxe3 c5 14. Kh1 Bd4
15. Qf3 Bb7 16. Bd5 Bxd5 17. exd5 Rb8 18. b3 Qa5 19. Ne4 Bxa1 20. Rxa1 Rb4 21.
c4 Qa3 22. Qc3 Qa5 *
Position (FEN): 5rk1/4pp1p/p2p2p1/q1pP4/1rP1NP2/1PQ5/P5PP/R6K w - - 3 23
White to move.
Themes:  Endgame  
Puzzle rating: 1424
Best move: a3