Triangle Shade
Drop black half-square triangles into the grid until every white area is a rectangle, upright or tilted 45 degrees. Numbers count the triangles beside them, and finished rectangles turn into shiny mirrors. Thirty puzzles from 5x5 to 8x8.
Play nowHow to play
Controls
Tap- Tap near a corner of a cell to put a triangle there, tap that corner again to clear.
- Every white area must be a rectangle.
- Numbers count triangles in the cells beside them.
About the game
Triangle Shade is a shape puzzle played with half squares. Some cells are solid black walls, a few of them with numbers. Every other cell is either left white or filled with a black triangle that covers half of it, cut along a diagonal. When you are done, each white area left on the board must be a perfect rectangle. It may stand upright or be turned 45 degrees like a diamond, but it cannot have any notch, bend or spike. A number on a wall says how many of the cells right beside it hold a triangle.
Tap near the corner where you want the triangle's square corner to sit, and tap the same corner again to take it away. The twist is the mirror: whenever a white area closes into a true rectangle, it turns into polished glass with a light sweep running across it, so you can see at a glance which parts are finished. Thirty puzzles run from 5x5 to 8x8, each with exactly one answer.
Free to play in your browser. No download, no sign-up. Works on phones, tablets and computers. Your progress is saved on this device.
