Chess puzzle (Advantage)
Moves: 1. e4 d5 2. exd5 c6 3. dxc6 Nxc6 4. Bb5 Bd7 5. Nf3 f5 6. d4 Nf6 7. Bxc6 Bxc6 8.
Bg5 h6 9. Bxf6 exf6 10. c3 Qe7+ 11. Qe2 O-O-O 12. Qxe7 Bxe7 13. Nbd2 Rhe8 14.
O-O-O Bd5 15. c4 Be4 16. d5 Bc5 17. Rhf1 Bd3 18. Rfe1 Bxf2 19. Rxe8 Rxe8 20.
Nb3 Bxc4 21. d6 Be3+ 22. Kb1 Kd7 23. Nfd4 Kxd6 24. Nxf5+ Kc6 *
Position (FEN): 4r3/pp4p1/2k2p1p/5N2/2b5/1N2b3/PP4PP/1K1R4 w - - 1 25
White to move.
Themes:  Endgame  
Puzzle rating: 1933
Best move: Na5+