Chess puzzle (Advantage)
Moves: 1. e4 d6 2. d4 c6 3. Nf3 Nd7 4. Be2 h6 5. O-O e5 6. dxe5 dxe5 7. Nc3 Qc7 8. Bc4
a5 9. Be3 b5 10. Bd3 Ba6 11. a4 Bc5 12. Bxc5 Nxc5 13. axb5 Nxd3 14. Qxd3 cxb5
15. Nd5 Qb7 16. Rfd1 Rd8 17. Nf6+ Ke7 18. Qa3+ b4 19. Nd5+ Rxd5 20. Qxa5 Rxd1+
*
Position (FEN): 6nr/1q2kpp1/b6p/Q3p3/1p2P3/5N2/1PP2PPP/R2r2K1 w - - 0 21
White to move.
Themes:  Middlegame  
Puzzle rating: 814
Best move: Rxd1