Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bf4 e6 3. Nf3 a6 4. e3 b5 5. Bd3 c5 6. b3 Nc6 7. a3 Bb7 8. Nbd2 Nf6
9. O-O Bd6 10. Ne5 c4 11. bxc4 bxc4 12. Be2 Qc7 13. Ndf3 Ne4 14. Qe1 f6 15.
Nxc6 Bxf4 16. exf4 Bxc6 17. Nd2 c3 18. Nxe4 dxe4 19. g3 Bd5 20. Rb1 O-O 21. Bg4
f5 22. Be2 Qc6 23. Rb4 e3 24. f3 Rf6 25. Bd1 a5 26. Rb1 Bc4 27. Be2 Qd5 28.
Bxc4 Qxc4 29. Qxe3 Rf7 30. Rb6 Re7 31. Rfb1 Kf7 32. Kf2 Rd8 33. R1b3 Red7 34.
Qxc3 Qxd4+ 35. Qxd4 Rxd4 36. Rb7+ Kf6 37. Re3 Rd2+ 38. Re2 Rd1 39. Ra7 R1d5 40.
Ra6 R8d6 41. Ra7 Rc6 42. Ke3 Rdc5 43. Ra8 Rc3+ 44. Kd4 *
Position (FEN): R7/6pp/2r1pk2/p4p2/3K1P2/P1r2PP1/2P1R2P/8 b - - 17 44
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1478
Best move: R6c4#