Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bb5 Bd7 7. O-O e6 8.
Bg5 Be7 9. Re1 O-O 10. Qd2 Nxd4 11. Bxd7 Nxd7 12. Bxe7 Qxe7 13. Qxd4 Nf6 14.
Nb5 Rfd8 15. Rad1 d5 16. exd5 Nxd5 17. Qc4 Nb6 18. Qb3 a6 19. Nc3 Rxd1 20. Rxd1
Nd7 *
Position (FEN): r5k1/1p1nqppp/p3p3/8/8/1QN5/PPP2PPP/3R2K1 w - - 1 21
White to move.
Themes:  Endgame  
Puzzle rating: 1175
Best move: Qxb7