Kakurasu


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Kakurasu is a logic puzzle with simple rules and challenging solutions.

The rules are simple.Kakurasu is played on a rectangular grid with no standard size.
The goal is to make some of the cells black in such a way that:
1. The black cells on each row sum up to the number on the right.
2. The black cells on each column sum up to the number on the bottom.
3. If a black cell is first on its row/column its value is 1. If it is second its value is 2 etc.

Click a cell to make it black, right click to place an X.

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Kakurasu


4x4 Easy Kakurasu | 4x4 Hard Kakurasu | 5x5 Easy Kakurasu | 5x5 Hard Kakurasu | 6x6 Easy Kakurasu | 6x6 Hard Kakurasu | 7x7 Easy Kakurasu | 7x7 Hard Kakurasu | 8x8 Easy Kakurasu | 8x8 Hard Kakurasu | 9x9 Easy Kakurasu | 9x9 Hard Kakurasu

This Month
1. chenh 00:38.67
2. Sujathar 00:38.96
3. triple
23
00:39.51
4. BobLobolaw1 00:46.90
5. MadraMor
159
00:52.15
6. Kutner17
151
00:52.24
7. Kukko
153
00:53.25
8. KanonLayne 00:59.69
9. Irisa
119
01:00.00
10. nikoleschi 01:08.60
11. Hachiman 01:22.77
12. nysnuib 01:23.81
13. saucyboy10969 01:28.19
14. Dorice
259
01:28.79
15. Tucker531 01:30.02
16. Uri Gotman
56
01:32.96
17. PhilDiggety 01:34.16
18. Geagle
90
01:35.49
19. WinterBirth
46
01:37.78
20. Andrea Aurigemma
29
01:45.37
This Week
1. Sujathar 00:42.31
2. BobLobolaw1 00:46.90
3. MadraMor
159
01:04.07
4. chenh 01:13.74
5. Hachiman 01:22.77
6. saucyboy10969 01:28.19
7. PhilDiggety 01:56.18
8. Dorice
259
01:57.89
9. KLKHAW 11:46.16
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Today
1. BobLobolaw1 00:46.90
2. Sujathar 00:47.63
3. chenh 01:13.74
4. Hachiman 01:22.77
5. saucyboy10969 01:28.19
6. KLKHAW 11:46.16
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
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MO3
1. Ludaye
72
00:22.82
2. Dymond
211
00:26.26
3. Douglas Shamlin Jr.
716
00:31.21
4. Nirneth
69
00:32.26
5. NoLifeChu
45
00:32.63
6. Preston10
101
00:34.41
7. triple
23
00:35.21
8. numbrr
306
00:36.25
8. Vezzick
178
00:36.25
10. zdz
91
00:39.02
AO5
1. Ludaye
72
00:23.59
2. Dymond
211
00:29.36
3. Douglas Shamlin Jr.
716
00:31.87
4. NoLifeChu
45
00:32.69
5. Nirneth
69
00:36.30
6. Preston10
101
00:36.36
7. triple
23
00:37.45
8. OneHero
262
00:39.57
9. zdz
91
00:43.30
10. Vezzick
178
00:43.70
AO12
1. Ludaye
72
00:24.46
2. Dymond
211
00:32.78
3. NoLifeChu
45
00:34.40
4. Preston10
101
00:39.80
5. triple
23
00:41.19
6. Douglas Shamlin Jr.
716
00:41.50
7. OneHero
262
00:44.80
8. Chen Wang
111
00:49.40
9. vowels
216
00:51.49
10. numbrr
306
00:52.21
Robots / programmatic solversinfo  
1.tlstyer
137
00:00.007
2.cheyette00:00.158
3.4s4f400:00.252

* 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.
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2026-01-21 22:35:41

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