Use turbo mode just in case. The setup of the game is just a board that's a grid of squares with pieces from both sides on it. None of the pieces start off tired (darkened and crossed out). The goal of the game is to push enemy pieces off of the board. Each turn, there are 2 things you can do. Skip the turn to refresh all of your pieces, making them not tired anymore, or choose one of your pieces that isn't tired, and move it like you would move a chess king. After the move, if there are any pieces within a king's range of each other, you must choose a piece that's king-touching another piece and king-move it directly away from the piece it's touching. You can't move it onto another piece, and if you move it off of the board it is destroyed. You have to keep on pushing pieces until there are no more possible pushes, and your turn doesn't end until then. All enemy pieces involved in the chain reaction that happened on your turn will become tired. Pushing a piece around back and forth and taking forever on your turn is stalling.
So easy to copy stuff on Scratch. There are tons of stuff like this. I can probably explain to you if you don't believe me but I'm too lazy to even bother. The programming for this is pretty bad in some places so you shouldn't copy it. I have no right to stop you but don't blame me if it doesn't work well or is hard to edit without large changes. And you can't pull pieces because this isn't Arimaa.