Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 g6 3. Nc3 Bg7 4. e4 d6 5. Qd2 c6 6. O-O-O b5 7. f3 Nbd7 8. h4
b4 9. Nce2 Qa5 10. Kb1 Rb8 11. Nc1 h5 12. Nb3 Qc7 13. e5 dxe5 14. dxe5 Nd5 15.
Bc4 e6 16. Bxd5 cxd5 17. Nh3 a5 18. Rhe1 a4 19. Nd4 O-O 20. Ng5 Nb6 21. Nb5 Qd7
22. Nd6 Ba6 23. Qd4 Qc6 24. Rc1 Nc4 25. Nxc4 Bxc4 26. b3 Ba6 27. Bd2 Rfc8 28.
f4 Bf8 29. Qf2 axb3 30. cxb3 Bd3+ 31. Kb2 Qa6 32. Rxc8 Rxc8 33. a4 bxa3+ 34.
Ka1 Qb5 35. Qa7 Qe8 36. Rc1 Ra8 37. Qb7 Rb8 38. Qa7 Rxb3 39. Rc8 Rb1+ 40. Ka2
Rd1 41. Rxe8 *
Position (FEN): 4Rbk1/Q4p2/4p1p1/3pP1Np/5P1P/p2b4/K2B2P1/3r4 b - - 0 41
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1773
Best move: Bc4#