No tricks required. You can win this without rotating the motor slowly at a certain angle . This can even lead to instabilities. Think of something else. Spoiler: Video Solution
As I didn't read your comment, I used the motor "slowly at certain angle" and experienced instabilities. But could win ! Excellent design and gameplay
I was disappointed when i saw the video as i spent some time looking for a clean win and struggled to see how R would get to the second highest ball. The move in the video doesn’t always work and seems out of keeping with the rest of the gameplay. I did like the stable way of getting R across to the other side.
@Pratik Bhalerao Spoiler Does R always have to bump the ball on the stair and rail? When can B bump the ball on the stair and rail?