Chess puzzle (Advantage)
Moves: 1. e4 c5 2. f4 d5 3. exd5 Nf6 4. Bc4 Nxd5 5. Nf3 Nc6 6. O-O e6 7. Nc3 Be7 8.
Ne4 O-O 9. d3 a6 10. Bd2 b5 11. Bb3 Qc7 12. Qe2 Nxf4 13. Qf2 Ng6 14. Bg5 f6 15.
Be3 Na5 16. Nxc5 Nxb3 17. cxb3 e5 18. Rac1 Qd6 19. d4 Bg4 20. Rfd1 exd4 *
Position (FEN): r4rk1/4b1pp/p2q1pn1/1pN5/3p2b1/1P2BN2/PP3QPP/2RR2K1 w - - 0 21
White to move.
Themes:  Middlegame  
Puzzle rating: 1504
Best move: Rxd4