Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d3 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Ng3 Ngf6 6. Nf3 c5 7. Be2 Be7 8.
Bg5 O-O 9. Bxf6 Nxf6 10. Nd2 Rb8 11. Nge4 b5 12. Nxf6+ Bxf6 13. Bf3 Bb7 14. Be4
Bxb2 15. Rb1 Bc3 16. Bxb7 Rxb7 17. O-O b4 18. Ne4 Bd4 19. c3 f5 20. cxd4 fxe4
21. dxc5 Qxd3 22. Qxd3 exd3 23. Rbd1 Rd8 24. c6 Rc7 25. Rfe1 Rxc6 26. Re3 e5
27. Rxe5 d2 28. Re2 Rc1 29. Rxd2 Rxd1+ 30. Rxd1 *
Position (FEN): 3r2k1/p5pp/8/8/1p6/8/P4PPP/3R2K1 b - - 0 30
Black to move.
Themes:  Endgame, Rook Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 400
Best move: Rxd1#