The seven stepping stones
Swap the groups without moving any piece backwards.
Your notebook · Rules, controls and method
Before you begin
There are 3 amber pieces on the left and 3 violet pieces on the right, separated by one empty stone.
Amber moves right; violet moves left. Step into an adjacent empty stone, or jump over exactly one opposite-colour piece into an empty stone.
How to play
Select the piece to move. Only legal moves are made. If stuck, undo and reconsider the sequence.
Ask for a hint, a reframe or an explained plan. Viewing a plan does not unlock the next level: apply it on the board first.
Preparing the board…