Chess puzzle (Checkmate)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Normal_Variation
Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. c4 Bb4+ 5. Nc3 O-O 6. Ne5 Bxc3+ 7. bxc3 Nc6 8.
Nxc6 bxc6 9. c5 Ne4 10. Bd2 Qf6 11. Qf3 Nxd2 12. Qxf6 gxf6 13. Kxd2 Rb8 14. Kc2
e5 15. Be2 Bf5+ 16. Bd3 Bxd3+ 17. Kxd3 Rb2 18. Rhf1 *
Position (FEN): 5rk1/p1p2p1p/2p2p2/2Ppp3/3P4/2PKP3/Pr3PPP/R4R2 b - - 2 18
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 824
Best move: e4#