Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 c5 5. g3 cxd4 6. Nxd4 Nc6 7. Nc2 Ba5 8.
a3 d5 9. b4 Bc7 10. c5 O-O 11. Bg2 e5 12. O-O e4 13. e3 Be5 14. Rb1 a5 15. Bb2
axb4 16. axb4 Ra2 17. Bxe5 Nxe5 18. Nd4 Nd3 19. f3 Qe7 20. fxe4 Nxe4 21. Nxe4
dxe4 22. Qb3 Rd2 23. Qc3 Ra2 24. Qb3 Ra6 25. b5 Nxc5 26. Qc2 Ra3 27. b6 Qg5 28.
Rf4 Ne6 29. Nxe6 Bxe6 30. Qxe4 g6 31. Qxb7 Rxe3 32. Qf3 Qc5 33. Qf2 Qe5 34. b7
Rb8 35. Rfb4 Kg7 36. Rb5 Qd4 37. Qb2 *
Position (FEN): 1r6/1P3pkp/4b1p1/1R6/3q4/4r1P1/1Q4BP/1R4K1 b - - 6 37
Black to move.
Themes: Double Check Middlegame Mate in 1 
Puzzle rating: 1732
Best move: Re1#