Choose a puzzle
Tap an arrow to slide it out along its own path, head first. It can only leave if nothing is in front of its head.
The puzzle opens zoomed out, so you can see all of it. Pinch with two fingers to zoom in, or slide the zoom control on the right. Drag the board with one finger to move around. Arrows can be tapped once you are zoomed in past the small orange mark on the zoom control.
You have 5 blocked taps on each puzzle. If you use them all, you try that puzzle again. The Hint button is always there, and there is no timer.
Your progress is saved on this device only.
Puzzle 1 of 10
Close up
Whole puzzle
All clear
Out of tries
That was 5 blocked taps. Nothing is lost: this puzzle starts fresh when you try again.