Wow, took me several minutes to finally complete it but this is more than worth it! It's exactly as advertised. Spoiler I didn't use tricks, I think, although I had to push B to reach some places and the same goes for R. I don't know if others would consider that tricks or not though... . Really clever way to mix puzzles and nice difficulty for the puzzles in the mix. Thanks.
Very looooooong pure puzzle, but nothing difficult to understand as all the mechanisms are extensions of the Original 50 back then.
Took a few restarts before B went another direction, then progress was easier. Subsequent run was flawless. I love a logic puzzle that makes you think a bit. Bravo, well done! ♡♡♡