Chess puzzle (Advantage)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d5 c5 8. Qd2 a6
9. g4 Bd7 10. h4 Qa5 11. h5 b5 12. hxg6 fxg6 13. Bh6 Rf7 14. Bxg7 Rxg7 15. Bd3
bxc4 16. Bxc4 Bb5 17. Nxb5 Qxd2+ 18. Kxd2 axb5 19. Bxb5 Rb7 20. a4 *
Position (FEN): rn4k1/1r5p/3p1np1/1BpPp3/P3P1P1/5P2/1P1K4/R5NR b - - 0 20
Black to move.
Themes:  Middlegame  
Puzzle rating: 1298
Best move: Rxb5