House Next Door

Awesome level! I liked how I had to scratch my head in order to find the logic. Now I have lost some hairs because of you Seriously I love such brain teasers! Thanks!

Another really nice logic level making use of different bot properties.

@Lucky j - Star Penguin posted a solution video under the "Caption" tab (found right above these comments). If you'd rather some hints:

Spoiler: Some Hints

Spoiler: B Bot Trick - Inset Stair Antidote

B normally cannot cross over an inset stair block, that is unless he is under a spell like under the influence of Autopilot, or in this level's case: Claustrophobia. The latter happens when B is sent to a spot with an overhanging block. If that spot is a valid spot, tapping it will send B to it and then B will do a calculation to escape to a spot without a low ceiling. You'll notice in this level that B can enter either of the houses in this condition, but not exit (because the inset block is not a valid block from the other direction).

Spoiler: R Bot Trick - Descend on Eye

Normally bots cannot step onto eye blocks (whether just used as objects or when attached as heads to other bots). The exception in this case is that R bots don't seem to care as much what is beyond a downward facing stair block. Therefore it is possible to release the R bots in this level by introducing the B bot or the regular R bot next to the stair blocks of the respective R bots.

Spoiler: Theoretical explanation - ending

You'll find three bots in this level. Tracing back from the win, you can deduce that an R bot cannot circle around the roof and get to the win. Therefore it must be B who'll have to ride on Pillar Bot's head to the centre-back draggable so as to be raised up to the roof.

Spoiler: Theoretical explanation - beginning

You'll have to understand the R bot trick explained above and then consider which bot is required to release which other bot. Since B can seem to enter either of the houses, but is required to come back out for the ending, he can only be used in a house that allows for his escape. There seems to be a chance in the larger house if say the Pillar Bot completes a path around the backside.

Spoiler: Middle part

The middle part is a bit obfuscated in that if Pillar Bot is used to complete a path around back of the larger house for B, the Pillar Bot may get stuck there. R bots are known to freeze if they come across a path that is blocked by a block at their eye level (one block above an empty block space). The solution is to fill the empty block space at the leg level. For that, in this level, you'll need the ball found in the wall of the smaller house.

Spoiler: The sneakiest part

The most difficult part from a straight logic perspective is to recognize that the ball can only be toppled by one of the R bots well before the ball is actually needed to ensure that the Pillar Bot does not get stuck in the water on the backside of the larger house discussed in the "Middle part."