Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. b3 d5 3. exd5 cxd5 4. Nf3 Nc6 5. Bb2 Nf6 6. d4 g6 7. Ne5 Bg7 8. Bb5
Qa5+ 9. Nc3 O-O 10. Bxc6 bxc6 11. Nxc6 Qc7 12. Ne5 Ba6 13. Ne2 Rac8 14. c3 Ne4
15. O-O Bxe5 16. dxe5 Qxe5 17. c4 Qxb2 18. Qxd5 Qxe2 19. Rfe1 Qxf2+ 20. Kh1 Nf6
21. Qa5 Qb6 22. Qe5 Ng4 23. c5 Rxc5 24. Qxe7 Re5 25. Rxe5 Nf2+ 26. Kg1 Nh3+ 27.
Kh1 Qg1+ 28. Rxg1 *
Position (FEN): 5rk1/p3Qp1p/b5p1/4R3/8/1P5n/P5PP/6RK b - - 0 28
Black to move.
Themes:  Endgame Mate in 1, Smothered Mate 
Puzzle rating: 860
Best move: Nf2#