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. Preston10
80
 00:01.72
2. Kutner17
144
 00:02.48
3. Fragler 00:02.59
4. MrMythicorn
111
 00:02.97
5. CeaselessWatcher
16
 00:03.13
6. FunAcroFly
87
 00:03.40
7. piscescribb
42
 00:03.68
8. prinsed
33
 00:03.79
9. jaripetteri
84
 00:03.97
10. Rhododendron
137
 00:04.09
11. dingeldrum
34
 00:04.41
12. sunleonid
10
 00:05.03
13. 云界
111
 00:05.75
14. RealTej 00:05.92
15. auhosj877
31
 00:06.09
16. Conceited_2
181
 00:06.36
17. takerusan
8
 00:06.86
18. 215zzq 00:07.63
19. 71448Eva
9
 00:07.66
20. bagels
4
 00:07.73
This Week
1. Preston10
80
 00:01.91
2. Kutner17
144
 00:02.48
3. jaripetteri
84
 00:03.97
4. Rhododendron
137
 00:04.09
5. sunleonid
10
 00:05.03
6. takerusan
8
 00:07.12
7. Conceited_2
181
 00:07.13
8. 215zzq 00:07.63
9. 71448Eva
9
 00:07.66
10. bagels
4
 00:07.73
11. Rocketdog
25
 00:07.99
12. tuskmanjones 00:08.42
13. cyanbao
23
 00:13.27
14. Flexo
33
 00:18.70
15. Philip2J 00:20.15
16. Akshay17
2
 01:01.05
17. CeaselessWatcher
16
 3d 19:53:42.91
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Preston10
80
 00:02.70
2. sunleonid
10
 00:05.03
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
704
 00:01.39
2. vowels
216
 00:01.64
3. Vezzick
166
 00:01.85
4. boru
107
 00:01.86
5. numbrr
300
 00:02.13
6. Nick
217
 00:02.15
7. 7k enjoyer
196
 00:02.17
7. qqwref
260
 00:02.17
9. BrownJohnDoe
201
 00:02.19
10. AnzaJoinDiscord
240
 00:02.21
AO5
1. Douglas Shamlin Jr.
704
 00:01.55
2. vowels
216
 00:01.56
3. Vezzick
166
 00:01.81
4. miki2003pl
60
 00:02.22
5. Nick
217
 00:02.25
6. boru
107
 00:02.28
7. BrownJohnDoe
201
 00:02.30
8. qqwref
260
 00:02.32
9. numbrr
300
 00:02.37
10. Emil1233
48
 00:02.41
AO12
1. Douglas Shamlin Jr.
704
 00:01.78
2. vowels
216
 00:01.91
3. Vezzick
166
 00:02.36
4. boru
107
 00:02.53
5. Nick
217
 00:02.61
6. BrownJohnDoe
201
 00:02.63
7. numbrr
300
 00:02.73
8. qqwref
260
 00:02.75
9. miki2003pl
60
 00:02.78
10. Ben65732
130
 00:02.80
Robots / programmatic solversinfo  
1.tlstyer
126
00:00.006
2.cheyette00:00.105
3.4s4f400:00.225

* 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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2025-08-29 21:59:33

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