Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e5 3. dxe5 d4 4. f4 Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 c5 7. Ngf3 Nh6 8.
Nb3 b6 9. e3 Nc6 10. exd4 Nxd4 11. Nbxd4 cxd4 12. Qxd4 Qxd4 13. Nxd4 Bb7 14.
O-O-O O-O 15. Rg1 Rfc8 16. b3 a6 17. g3 b5 18. Kb2 bxc4 19. bxc4 Be4 20. Rc1
Rd8 21. Nb3 a5 22. Bg2 Bxg2 23. Rxg2 a4 24. Nd2 a3+ 25. Kb3 Rdb8+ 26. Kc3 Rb2
27. Ra1 Nf5 28. Re2 Rd8 29. c5 Nd4 30. Rf2 Nb5+ 31. Kc4 *
Position (FEN): 3r2k1/5ppp/8/1nP1P3/2K2P2/p5P1/Pr1N1R1P/R7 b - - 4 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1209
Best move: Rd4#