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Monthly Shikaku

A giant 25×25 Shikaku marathon with dozens of rectangles. Take your time: your progress is saved automatically. A new puzzle appears on the first day of every month.

Monthly challenge Next in

0 rectangles · Drag to draw · Tap a rectangle to erase · Ctrl+Z undo · H hint

Puzzle solved!

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Same puzzle for everyone

The grid is generated from the date, so every player worldwide gets the identical 25×25 puzzle and can compare times fairly.

Take your time

Leave and come back whenever you like — your rectangles and timer are saved automatically in your browser.

More challenges

Daily Shikaku · Weekly Shikaku · or pick any size and level.