Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Nc3 a6 6. Bxc6 dxc6 7. b3 Nf6 8.
Bb2 O-O 9. Rb1 b5 10. Re1 Be6 11. Ne2 c4 12. bxc4 Bxc4 13. Ne5 Bxa2 14. Nxc6
Qc7 15. Ra1 Qxc6 16. Rxa2 Rfc8 17. Bxf6 Bxf6 18. f3 Qb6+ 19. Kh1 a5 20. c3 b4
21. Qb3 Qf2 22. Qd1 b3 23. Ra3 Rcb8 24. Nd4 Bxd4 25. cxd4 Qxd4 26. Qb1 a4 27.
d3 Qb4 28. Ra1 b2 29. Ra2 a3 30. Re2 Qb3 31. Re1 Rd8 32. Rd1 Rab8 33. d4 Qxd1+
34. Qxd1 b1=Q 35. Qxb1 *
Position (FEN): 1r1r2k1/4pp1p/6p1/8/3PP3/p4P2/R5PP/1Q5K b - - 0 35
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 664
Best move: Rxb1#