@Abi Irsyad Move up and down the stairs and push the first ball.Push the motor to a certain position.R can come down.Then the B station climbs the engine.Push the second ball.
The first motor took a while but the second one took even longer and was not a satisfying finish. I couldn’t see a way to get B down after the second ball and was forced to use a ToA move.
@Abi Irsyad OK, let me explain my skills.Push engine 1/3,B stands on the engine,There is upward movement.Click on the stone next to it,Then quickly point the stones above.Good luck.