This is a guide for the Ball Solitaire in Bowser's Castle in Super Mario RPG Remake. It includes information on where to kick the balls in the castle puzzle.
Ball Solitaire Strategy
Strategy Example

If you kick the balls in the order shown in the image, you can clear them all.
Strategy Video
What is Ball Solitaire?
A game where you kick balls to make them disappear

Ball Solitaire is a game where you kick a ball to hit an adjacent ball and make it disappear. Be careful, as you cannot kick a ball if there is another ball two spaces ahead of the kicked ball.
You can only kick if you can jump over a ball

You cannot kick a ball if there's no ball to jump over. Be aware that you cannot adjust a ball's position by kicking it into an empty space.
Failure results in a forced end
The game will end forcibly when there are no more balls you can kick. You will be returned to the area before the six doors, so kick carefully.