Shikaku


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Shikaku (also known as Rectangles) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.

Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key.

Video Tutorial
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Shikaku


5x5 Shikaku | 7x7 Shikaku | 10x10 Shikaku | 15x15 Shikaku | 20x20 Shikaku | 25x25 Shikaku

New Puzzle
This Month
1. miggy
172
 00:02.14
2. flaccoofshikaku 00:02.55
3. oli g
36
 00:02.82
4. Layfort 00:02.93
5. zuhnaie
17
 00:03.09
6. willy86ylliw
70
 00:03.13
7. dirkdiggler 00:03.49
8. MrMuhuny 00:03.58
9. Idiot! ¯\_(ツ)_/¯
7
 00:03.60
10. qobi
243
 00:03.81
11. coolcoolguy65
182
 00:03.82
12. FxdeSlxyr
10
 00:03.83
13. cliper162 00:03.87
14. GavinRose
14
 00:03.99
15. alazyslump
17
 00:04.02
16. DBWwushen
15
 00:04.04
16. magarner
69
 00:04.04
18. Slexia 00:04.12
19. blumlo
3
 00:04.30
20. waifu
7
 00:04.43
This Week
1. miggy
172
 00:02.14
2. oli g
36
 00:02.82
3. zuhnaie
17
 00:03.09
4. willy86ylliw
70
 00:03.13
5. flaccoofshikaku 00:03.47
6. Idiot! ¯\_(ツ)_/¯
7
 00:03.60
7. magarner
69
 00:04.04
8. blumlo
3
 00:04.30
9. Cladz365 00:04.45
10. DBWwushen
15
 00:04.74
11. ShinyTip
7
 00:04.84
12. Dorice
275
 00:04.98
13. Huwdu
3
 00:05.00
14. KETJAK
45
 00:05.23
15. dynesonne 00:05.36
16. GeorgPfleger
102
 00:05.42
17. 99178 00:05.76
18. wallickdeez
31
 00:05.88
19. AsianDude
7
 00:06.48
20. Hahllyicssa
52
 00:06.73
Today
1. miggy
172
 00:02.14
2. zuhnaie
17
 00:03.09
3. Idiot! ¯\_(ツ)_/¯
7
 00:03.60
4. willy86ylliw
70
 00:03.81
5. DBWwushen
15
 00:04.74
6. GeorgPfleger
102
 00:05.86
7. wallickdeez
31
 00:07.63
8. Tuffi
37
 00:09.23
9. seanmvrvrvvrth
6
 00:12.23
10. yennyroma2003 00:15.85
11. hewenguang
19
 00:56.88
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. zahhydude1
219
 00:01.42
2. vowels
216
 00:01.80
3. CYrZx123
55
 00:01.95
4. nabi
92
 00:02.07
5. demian2
61
 00:02.29
5. BingBongBob
108
 00:02.29
7. Anza2700
75
 00:02.34
8. coolcoolguy65
182
 00:02.36
9. numbrr
327
 00:02.43
10. jaybrainer
284
 00:02.54
AO5
1. zahhydude1
219
 00:01.43
2. vowels
216
 00:01.94
3. CYrZx123
55
 00:02.05
4. nabi
92
 00:02.21
5. BingBongBob
108
 00:02.40
6. demian2
61
 00:02.44
7. numbrr
327
 00:02.53
8. coolcoolguy65
182
 00:02.55
9. Anza2700
75
 00:02.62
10. Chalk
138
 00:02.73
AO12
1. zahhydude1
219
 00:01.67
2. vowels
216
 00:02.02
3. CYrZx123
55
 00:02.35
4. nabi
92
 00:02.41
5. coolcoolguy65
182
 00:02.79
6. numbrr
327
 00:02.85
7. demian2
61
 00:02.86
8. BingBongBob
108
 00:02.88
9. tongjordon@gmail.com
11
 00:02.94
10. jaybrainer
284
 00:03.00
Robots / programmatic solversinfo  
1.dbut2
50
00:00.003
2.tlstyer
156
00:00.006
3.Charlie Li
61
00:00.211

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
You need to be logged in to track your averages

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