Puzzle kind · Light
Light: where does it get through?
The sheet starts full of holes. Fold it, and find the spots where every layer lines up so light shines straight through.
The rule
A light puzzle turns the holes puzzle around. The holes are already there, shown on a board labelled THE HOLES. You fold the paper, and in the folded stack you mark every square where all the layers have a hole at the same spot. Light only passes where nothing is in the way, so a single unholed layer blocks it.
Each puzzle has between one and three light windows, and a window always passes through at least two layers. Decoy holes are placed so that at least one layer is still solid, which is what makes you track each hole through the folds instead of guessing.
How a round goes
- Study the sheet of holes. The folding sheet beside it shows none, so you carry them in your head.
- Fold the sheet with your fingertip, following the diagrams. The stack is labelled MARK WHERE LIGHT PASSES.
- Touch the stack squares you think are windows. They shine; touch again to remove a mark.
- Press CHECK. The holes are cut into the folded stack and light shows through the real windows. Each square is ringed: green found, orange dashed missed, red cross wrongly marked.
Tips
- Start from the stack square, not the hole. For each square, list which sheet squares are stacked there, then ask whether every one of them is holed.
- A short fold adds layers to only part of the stack. Squares outside the flap have fewer layers to line up, so they are easier windows, but only if they are holed.
- Decoys are on purpose. A square with three holed layers out of four is not a window.
Where light appears
Light puzzles are introduced in level 16, with five to eight holes and two straight folds. In levels 18 and 19 you meet them again without the paper to fold: you mark the windows inside the outline of the final stack from the diagrams alone. Infinite Bloom mixes them in whenever your results suggest they need practice.