Interlace

Grid logic puzzles

Interlace is a collection of logic puzzles for PC, built around making rows and columns agree. You swap tiles within a row until it reads true, while each column must contain exactly the colors shown above it. A move that fixes one row can affect another, so both rules shape how you arrange the grid.

Three puzzle threads

Compose asks you to rearrange letters into words. Each letter has a color, and later puzzles hide letters for you to work out from the color pattern. In Balance, you arrange numbers into true equations, trade plus, minus, multiplication and division signs between rows, and fill in missing digits. Link has you join shape tiles into chains, matching each tile’s right-hand shape to the next tile’s left-hand shape.