See here, specifically, Move #15: https://www.chessgames.com/perl/chessgame?gid=1139667

Hey dev, Im still didnt finish game, great idea btw, but for now I've found a mistake: NUMBER 47: Tal vs Tringov Black's first movement after Bxf7+ its Kd8, and after that Ke8 which its not possible since Bishop still at f7, so correct proggression shou...

Help would be appreciated..

level 7 I only know first 2 moves. :(

After completing this task I have to say that there is no mate in 1. I agree that Kasparov's position is much better but there is no fast checkmate.