Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Bc4 e6 3. Nf3 a6 4. d4 b5 5. Be2 cxd4 6. Nxd4 Bc5 7. Be3 Nf6 8. Qd3
Bb7 9. Bf3 O-O 10. e5 Nd5 11. Nc3 Qe7 12. Nxd5 exd5 13. Nf5 Qxe5 14. O-O-O
Bxe3+ 15. Nxe3 Nc6 16. Nxd5 b4 17. Rhe1 Qxh2 18. Rh1 Ne5 19. Qe4 Bxd5 20. Qxd5
Qf4+ 21. Kb1 h6 22. Qb3 a5 *
Position (FEN): r4rk1/3p1pp1/7p/p3n3/1p3q2/1Q3B2/PPP2PP1/1K1R3R w - - 0 23
White to move.
Themes:  Middlegame  
Puzzle rating: 1223
Best move: Bxa8