How to play Peeks.
Peeks is a tile puzzle: every combination of shape and colour appears on the board exactly once, and the little cards under the board, the peeks, show you fragments of where. Match the peeks, then finish with the one-of-each rule.
The board.
A 3 by 3 board with three shapes and three colours, so nine tiles in all. The board starts empty. Below it sit the peeks: small windows onto the finished board, showing some tiles fully, some as just a shape or just a colour, and some not at all.
The rule.
Pick a shape and a colour on the brush, then tap a square to paint it. Tap the selected shape or colour to switch it off and paint half a tile, a note for later.
Match the biggest peek first.
A peek the size of the whole board can only sit one way. Copy everything it shows outright, and treat its half-tiles as notes.
Reading the smaller peeks.
Smaller peeks need placing: slide them around the board in your head until every tile they show lines up with what you already know. A peek that shows only a colour or only a shape is still a clue, because it rules out every square that disagrees.
Common questions.
Can a peek be rotated?
No. A peek matches the board exactly as it is drawn: same orientation, same layout.
What if two peeks seem to fit the same place?
Then one of them fits somewhere else too, and the one-of-each rule decides. Paint what you are sure of first; the rest narrows itself.