What is Shikaku?
Shikaku is a rectangle puzzle. Divide the entire grid into rectangles using the numbers that indicate how many cells each rectangle must cover.
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Play Shikaku online
Split the grid into rectangles. Every rectangle must contain exactly one number, and its area must match that number.
01
Today's Shikaku challenge
Detailed results are kept for the current month and the previous three months. Older puzzles remain playable without new account results or puzzle points. Lifetime progress is preserved.
Calendar
List
October
Mo
Tu
We
Th
Fr
Sa
Su
| Date | Difficulty | Status |
|---|---|---|
| 27 October 2026 | Easy | Not played |
| 26 October 2026 | Easy | Not played |
| 25 October 2026 | Hard | Not played |
| 24 October 2026 | Hard | Not played |
| 23 October 2026 | Hard | Not played |
| 22 October 2026 | Medium | Not played |
| 21 October 2026 | Medium | Not played |
| 20 October 2026 | Easy | Not played |
| 19 October 2026 | Easy | Not played |
| 18 October 2026 | Hard | Not played |
| 17 October 2026 | Hard | Not played |
| 16 October 2026 | Hard | Not played |
| 15 October 2026 | Medium | Not played |
| 14 October 2026 | Medium | Not played |
| 13 October 2026 | Easy | Not played |
| 12 October 2026 | Easy | Not played |
| 11 October 2026 | Hard | Not played |
| 10 October 2026 | Hard | Not played |
| 9 October 2026 | Hard | Not played |
| 8 October 2026 | Medium | Not played |
| 7 October 2026 | Medium | Not played |
| 6 October 2026 | Easy | Not played |
| 5 October 2026 | Easy | Not played |
| 4 October 2026 | Hard | Not played |
| 3 October 2026 | Hard | Not played |
| 2 October 2026 | Hard | Not played |
| 1 October 2026 | Medium | Not played |
| 30 September 2026 | Medium | Not played |
| 29 September 2026 | Easy | Not played |
| 28 September 2026 | Easy | Not played |
| 27 September 2026 | Hard | Not played |
| 26 September 2026 | Hard | Not played |
| 25 September 2026 | Hard | Not played |
| 24 September 2026 | Medium | Not played |
| 23 September 2026 | Medium | Not played |
| 22 September 2026 | Easy | Not played |
| 21 September 2026 | Easy | Not played |
| 20 September 2026 | Hard | Not played |
| 19 September 2026 | Hard | Not played |
| 18 September 2026 | Hard | Not played |
| 17 September 2026 | Medium | Not played |
| 16 September 2026 | Medium | Not played |
| 15 September 2026 | Easy | Not played |
| 14 September 2026 | Easy | Not played |
| 13 September 2026 | Hard | Not played |
| 12 September 2026 | Hard | Not played |
| 11 September 2026 | Hard | Not played |
| 10 September 2026 | Medium | Not played |
| 9 September 2026 | Medium | Not played |
| 8 September 2026 | Easy | Not played |
Completed on time
Completed later
Today's challenge
Easy27 October 2026 • Not played
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02
Our puzzle books
03
Everything you need to know about Shikaku
Learn the rules and try a practical solving tip.
Rules
- Each rectangle must contain exactly one clue number.
- Each rectangle must cover as many cells as its number indicates.
- Rectangles may not overlap.
- Every cell in the grid must be covered exactly once.
Tips
Tip: A clue of 6 allows a 1×6 or 2×3 rectangle, including rotated versions. Rule out shapes that cross the edge or cover another clue.