Turtle layout
Time 0:00Pairs 0
144 tiles, five layers deep — the largest board here. Order matters much more than speed.
No free pairs left
Turn your phone for a bigger board
Why it is hard
With five layers a single tile can hide several below it, so one careless pair can shut a corridor. The deal is still solvable; it just stops being obvious.
Staying oriented
Work top-down and edge-in: clear the surface first, then descend. Turn on beginner labels if you do not read the characters yet — every tile then carries its number or wind in the corner.
When it will not fit
On a phone the board shrinks to screen width and a tile ends up around 20 pixels. Turn the phone sideways: everything roughly doubles. Or play Tower instead.