Kaku: Shikaku Logic Puzzle

About the game

A grid shows up with a few numbers sprinkled over it and nothing else. Each number claims a rectangle, and the rectangle has to be exactly as many cells as the number says. Cover every square and you win.

Early boards fall in a minute or two. The Expert tier stretches to 13×13, where one stubborn corner can eat your whole lunch break. Four difficulty steps hold 2,000 handmade stages, a new daily puzzle earns monthly trophies, and a running IQ score ticks up as you finish boards. A hint will reveal one correct piece when you hit a wall.

How to play

• Drag across the board with the left mouse button held down, or swipe with a finger, to stretch a rectangle over cells.
• Every rectangle must hold exactly one number, and its cell count has to match that number.
• Placed a bad one? Tap it to erase it.
• Fill all cells with no gaps and no overlaps to clear the stage. A hint shows one correct rectangle if you are stuck.

• Free
• No download
• Works on phones