Not sure if I did it right so I made this movie... Spoiler: my solution https://photos.app.goo.gl/5GjBhCtbxMNXCdrVA It's ok?Anyway,I had fun and I like the design...Thanks for sharing
@delator77 China has blocked many foreign video websites, but I can't see them. Thank you for sharing.
My solution is identical to @delator77 win. Spoiler: Possible I thought the final move might involve an assist from R to gain the extra height because it is not a simple move otherwise.I have managed to get R in position twice but B did not leapfrog over him although it may be possible
@ridgerunner B needs help from R.When R stands on the electric field climbing the stairs, he can't climb up, but that's why B can climb up R's back.