Complex duet

Thanks to @ridgerunner for finding the shortcut in previous version of level!

i love some of the ideas in this 3botx3bot level but i think it is unfair to play.. Its easy and fun to complete each half by itself but invariably the wrong bot has by random interaction got frozen in the other half section. And again bots tend to fall off easily . Got there eventually and really liked the finish though it took a few attempts for the bot to pluck up courage to transfer over. Regarding the first 4botx4bot version, i can see why random wins occured because when two bots were on the stairs below the win with one frozen, the other bot should not normally be able to turn left to go up the stairs but often does.

Way too annoying trying to keep the bots stable and from bumping in the corners. Even with the lower bot frozen, the upper bot has too many places to get off. After about 15 attempts, I finally got R where I figured R should wait and luck was involved but R was stuck on the other side so I just gave up.

Thanks @ridgerunner and @gmacpro! Yeah maybe too small size for the idea, but I personally found it stable while testing so sorry about this, anyway that was just a small level! Currently I am working on something more interesting, at least for me.

BTW there's a way to prevent falling, but that needs timing