Shikaku Puzzles Daily

About Shikaku Puzzles Daily

Shikaku is a Japanese logic puzzle published by Nikoli: divide the grid into rectangles so that every rectangle holds exactly one number and that number equals its area. A 6 covers six cells, as a strip or a 2 by 3 block, and the board is solved when every cell sits in exactly one rectangle.

The Daily page posts one board a day, numbered and dated, such as Shikaku #64 on October 5, 2026. Above it the site lists the last two weeks, each a click away, and the full archive keeps every earlier day. The board counts how many rectangles of the total you have placed, runs a timer, offers undo, redo and reset, and saves your progress as you go. Puzzles are generated and checked by a solver to have one solution, and graded by the techniques a person needs.

Beside the daily there are more than 600 puzzles from 5 by 5 to 20 by 20 and a guide to named solving techniques. The site belongs to Coffee Break Games, a studio hub of daily puzzles, and needs no sign-up. It suits newcomers to Shikaku, since the daily boards can be small, and anyone who wants an archive to work back through.

How to play Shikaku Puzzles Daily

1. Open the Daily page and choose today's puzzle.
2. Press on one corner cell and drag to the opposite corner to draw a rectangle; the preview shows its area.
3. Make each rectangle hold exactly one number equal to its area; on touch, tap one corner and then the other.
4. Fill the whole board with no gaps or overlaps to finish and stop the timer.
5. Use Yesterday or the calendar to play earlier days.

Screenshots

Tips

• A 1 is a finished one-cell rectangle; place those first.
• Primes can only be thin strips, and clues against a wall can only grow inward.
• When two big clues compete for the same corridor, work out what each must leave the other.

Questions