Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nc6 7. Qd2 h5 8. Bc4
a6 9. O-O-O Bd7 10. f3 Ne5 11. Be2 b5 12. f4 Nc4 13. Bxc4 bxc4 14. Qe2 Rc8 15.
Rhf1 Nf6 16. e5 Ng4 17. exd6 O-O 18. dxe7 Qxe7 19. Bg1 Qb4 20. h3 *
Position (FEN): 2r2rk1/3b1pb1/p5p1/7p/1qpN1Pn1/2N4P/PPP1Q1P1/2KR1RB1 b - - 0 20
Black to move.
Themes: Defensive Move Middlegame  
Puzzle rating: 1911
Best move: Rb8