Shisen-Sho

How to play

Remove identical tiles with an orthogonal line that turns at most twice and crosses no other tile. Routes may go outside the board. Tiles stay in place; there is no gravity. Gentle has 24 tiles, steady 40 and challenge 60. New boards have a verified clearing route, but alternate matches can block the challenge board. Hint marks a legal pair; Shuffle rearranges the remaining tiles and counts as help. Tap two tiles or use Tab, Enter and arrow keys. Undo, restart and saved progress are available. No timer.