Chess puzzle (Advantage)
Moves: 1. d4 c5 2. e4 Qa5+ 3. Nc3 Nc6 4. Bd2 cxd4 5. Nd5 Qd8 6. Bb5 a6 7. Ba4 b5 8.
Bb3 e6 9. Nf4 Nf6 10. e5 Ne4 11. Nf3 Nxd2 12. Qxd2 Bc5 13. Nd3 Ba7 14. O-O Qb6
15. c4 bxc4 16. Bxc4 O-O 17. b3 Na5 18. Rab1 Bb7 19. Qf4 Nxc4 20. bxc4 Bc6 *
Position (FEN): r4rk1/b2p1ppp/pqb1p3/4P3/2Pp1Q2/3N1N2/P4PPP/1R3RK1 w - - 1 21
White to move.
Themes:  Middlegame  
Puzzle rating: 1356
Best move: Rxb6