Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d5 3. e3 e6 4. Nf3 Bd6 5. Ne5 c5 6. c3 cxd4 7. cxd4 Nc6 8. Nc3
Qc7 9. Ng4 Nxg4 10. Qxg4 O-O 11. Bh6 f5 12. Qg5 Qf7 13. g4 Kh8 14. O-O-O gxh6
15. Qxh6 f4 16. Bd3 Nb4 17. Bb1 Bd7 18. a3 Nc6 19. g5 Qg7 20. Qh4 Be8 21. Rhg1
Bg6 22. e4 f3 23. e5 Be7 24. Qg3 Rac8 25. h4 Na5 26. Ba2 b5 27. Kd2 Nc4+ 28.
Bxc4 bxc4 29. Rh1 Rb8 30. Kc1 Bh5 31. Rdg1 Rb7 32. Rd1 Rfb8 33. Rd2 Qg6 34. Qf4
Bxa3 35. bxa3 Rb1+ 36. Nxb1 *
Position (FEN): 1r5k/p6p/4p1q1/3pP1Pb/2pP1Q1P/P4p2/3R1P2/1NK4R b - - 0 36
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 400
Best move: Qxb1#