Welcome to the forum. I gave your level a try but since I'm not a fan of hidden - I didn't get far. One point I'd like to say, it is obvious that you didn't use sliders to anchor the draggables as they made a lot of noise when they were moved.
I found the solution but I cannot precisely say how B reached the win. It is a matter of trial and error.
Nice idea but game play could have been better had you used sliders in the draggables. Overall I thought it was easy to win and I don't think there was anything hidden as I've read in some comments. I will add an extra star for the design.
@JGM ty very much for star and solution, i will do on next, this my first design, still amateur, know mekorama about 1 month, playing and try to design episode. Amazing game. I love mechanical and hidden for escape but not interest with triks
Excellent hidden logic maze!! Really challenging!!Thanks for sharing and great job @Raffa ...The design is very pleasant...Btw... Spoiler: A little shortcut You can avoid the first section of the route using autopilot ... Here is the movie ... https://photos.app.goo.gl/EpTJyUv9LbC6cETs2 Anyway,if this your first level,it's great!!
@delator77 ty very much, yes this my first design and i dont know about the triks, autopilot and others before, i think just about mechanism, logical and skill