Chess puzzle (Checkmate)
Moves: 1. d4 b6 2. e4 Bb7 3. Nc3 g6 4. Bf4 Bg7 5. Nf3 Nf6 6. e5 Nd5 7. Nxd5 Bxd5 8.
Bb5 Bb7 9. Qd2 a6 10. Bc4 d5 11. Bb3 a5 12. a4 O-O 13. Bh6 e6 14. Bxg7 Kxg7 15.
h4 h6 16. h5 g5 17. g4 Na6 18. Qe3 Nb4 19. c3 Nc6 20. Bc2 Ba6 21. Nd2 Rh8 22.
f4 f6 23. exf6+ Qxf6 24. fxg5 Qxg5 25. Qg3 Rac8 26. O-O-O Be2 27. Rde1 Qxg4 28.
Qxg4+ Bxg4 29. Rh4 Bf5 30. Rg1+ Kf6 31. Bxf5 exf5 32. Rg6+ Ke7 33. Rxc6 Kd7 34.
Rf6 Rce8 35. Rxf5 c6 36. Kc2 Re2 37. Kd3 Rg2 38. b3 Re8 39. Re5 Rf8 40. Rh3
Rff2 41. Nf3 Rb2 42. b4 axb4 43. cxb4 *
Position (FEN): 8/3k4/1pp4p/3pR2P/PP1P4/3K1N1R/1r4r1/8 b - - 0 43
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1238
Best move: Rb3#