Eleven Pearls v4

Fixed another bug that allowed the R-Bot pearl to be skipped (thanks @richardfu for reporting this and to @Mamek Rammers for reporting an earlier shortcut win bug). Version 4 also has an enhancement to R-Bot area to make it even more challenging.

Spoiler: Trick with the R-Bot section

The ball on in the R-Bot section is resting on an eye, which is half a block high. This gives the ball a special property. When the B-Bot is traveling over it he will leap in the air a bit. If he lands on a horizontal cylinder he'll often fall off the edge of it. On testing an earlier pearl level I found that he B-Bot will sometimes, but rarely fall off 2nd highest cylinder in the upper stairwell. I began looking for a more reliable method of doing so and eventually stumbled on the ball-on-eye-next-to-cylinder combo.

Great work. Now the number of tricks is overwhelming

@richardfu_ Yeah, I agree it's totally redonkulous now. That said I probably will create a Thirteen Pearl level at some point as there is still an empty quadrant... I have a few more tricks up my sleeve.

I can't reach or push the ball on the right of R in the direction he's facing in the starting image :/

@Aleric

Spoiler: Moving ball on top of stair to right of R-Bot

The R-Bot needs to move this ball. First get B-Bot into the R-Bot area then move B-Bot to the very top of ball stair which is the left of R-Bot. Then wait for the R-Bot to come up. R-Bot should then reach a platform that he wasn't on before. Once he's there B-Bot will need to help him reach the ball. Good luck!

@retrograde The last sentence however doesn't make sense to me... I can't help, he turn right, and then instead of turning left up the stairs, he turns right twice and comes back, I can't block that because I can't go there (weird that R can go where B can't)...

@Aleric

Spoiler: Hint 2

Once you get R-Bot to that upper platform, you next have to get B-Bot onto the same platform via the central slider. To do this you need use the "Focus Drop" technique. Get B-Bot onto the platform with vertical slider and position him next to the horizontal cylinder. Put the horizontal slider into position to give B-Bot a runway (heading towards R-Bot). Tap on the horizontal slider to make B-Bot move towards it, but before he reaches it quickly hide the slider under the upper stairway. B-Bot will fall down to the same platform where R-Bot is. Use B-Bot to nudge R-Bot up the stair... oh, and pull the slider back out before R-Bot knocks the ball in.

Reviewing unfinished levels I finally solved this one. Amazing numver of tricks in such small space. Thanks!

A brilliant pearl puzzle!!! Amazing!! Thanks!! @retrograde