49th

If you need a little hint, here it is:

Spoiler: Hint

Pillar R needs to follow the sand

Spoiler

I like the ball mechanic and nice tricky level (I used the hint)

@Ace Thanks for playing! I guess your tricky doesn't mean it needed tricks right?

Superb level. I thought that i might have got the gameplay wrong at 3:20 as pillar bot took over 10 seconds and many attempts to move over onto the stonework. Relief and then satisfaction seeing what happened next.

Tough level as there were many options to pick from at the start and they may or may not be very stable which sent me off on a wild goose chase. Doing the level as intended proved very stable. Well done.

@ridgerunner

Weird as in my experience Pillar R always easily climb up there once the lower Pillar L is frozen. I don't know what can you do other than watching and hoping so it was a relief for me also to know you succeeded. Thanks for playing!

@Meko Guy Everything needed to be said is in the conversation. Thanks for playing!

Well, well,well... complex logic level so happy to solve it BUT I did not need one of the balls! what??? a shortcut? oohh noooooooo that was what I thought... then I saw your solution movie... bufffff, what a relief... we have the same gameplay except one small detail that changes nothing & everything at the same time ... I have not space on my device to record a movie but fortunately this time a picture is enough...

Spoiler

just when you are going to release the first ball, put the stack L/B in this position & the ball will go to its spot so the second ball is not needed... check this one...
https://photos.app.goo.gl/XNeQoPxrbxUcXqjD7

all my tries (4-5] were successful... what do you think my friend? thanks for this Meko-challenge @ohmytian

@delator77 I was wondering if you needed any help as you didn't comment on this level so I was constantly checking my inbox but apparently I completely missed it as I was sleeping! Good spotting there that can skip one ball - or maybe one ball is extra for you if that move fail. Thanks a lot for playing.