Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. Bg5
Be7 9. Bxf6 Bxf6 10. Nd5 Bxd5 11. Qxd5 O-O 12. Qxb7 Nd7 13. Qd5 Nb6 14. Qd1 Rc8
15. Bxa6 Rc6 16. Bd3 Nc4 17. Bxc4 Rxc4 18. Qd3 Qc7 19. Rc1 Bg5 20. Nd2 Bxd2+
21. Kxd2 *
Position (FEN): 5rk1/2q2ppp/3p4/4p3/2r1P3/3Q4/PPPK1PPP/2R4R b - - 0 21
Black to move.
Themes: Pin Endgame  
Puzzle rating: 1210
Best move: Rd4