Chess puzzle (Checkmate)
Moves: 1. Nf3 Nc6 2. d4 d5 3. c4 e6 4. c5 e5 5. dxe5 Bxc5 6. Nc3 Bb4 7. Bd2 d4 8. Ne4
Bxd2+ 9. Qxd2 Bf5 10. Ng3 Bg6 11. Rc1 Nge7 12. e3 dxe3 13. Qxe3 O-O 14. e6 fxe6
15. Qxe6+ Kh8 16. Be2 Nf5 17. Nxf5 Bxf5 18. Qb3 Qe7 19. Qxb7 Rae8 20. Qb5 Nb4
21. Rc3 Nxa2 22. Re3 Qb4+ 23. Qxb4 Nxb4 24. Kd2 Rd8+ 25. Kc1 *
Position (FEN): 3r1r1k/p1p3pp/8/5b2/1n6/4RN2/1P2BPPP/2K4R b - - 3 25
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 990
Best move: Na2#