Kakurasu

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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This Month
1.	prinsed	00:02.67
2.	Fragler	00:04.83
3.	kamikazi	00:05.85
4.	k03ih01	00:05.90
5.	May John	00:05.99
6.	daspore	00:06.64
7.	Austin Schilling	00:09.97
8.	yuanjunliang	00:13.68
9.	triple	00:14.21
10.	FunAcroFly	00:14.49
11.	Anna Redzik	00:20.30
12.	Kailo	00:27.52
13.	RosemaryW	00:31.52
14.	apricot863	00:35.80
15.	Soham Bhosale	00:38.29
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This Week
1.	prinsed	00:04.32
2.	May John	00:05.99
3.	Anna Redzik	00:20.30
4.	Kailo	00:27.52
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Today
1.	May John	00:05.99
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MO3
1.	Douglas Shamlin Jr.	00:01.59
2.	vowels	00:01.69
2.	Vezzick	00:01.69
4.	BingBongBob	00:02.00
5.	miki2003pl	00:02.06
6.	Nick	00:02.17
7.	BrownJohnDoe	00:02.28
8.	numbrr	00:02.32
9.	Emil1233	00:02.46
10.	Ben65732	00:02.51

AO5
1.	Douglas Shamlin Jr.	00:01.70
2.	vowels	00:01.74
3.	Vezzick	00:01.93
4.	miki2003pl	00:02.15
5.	Nick	00:02.26
6.	BingBongBob	00:02.27
7.	BrownJohnDoe	00:02.32
8.	numbrr	00:02.37
9.	Make	00:02.39
10.	Emil1233	00:02.64

AO12
1.	Douglas Shamlin Jr.	00:01.94
2.	vowels	00:01.95
3.	Vezzick	00:02.46
4.	BingBongBob	00:02.53
5.	Nick	00:02.55
6.	BrownJohnDoe	00:02.70
7.	miki2003pl	00:02.73
8.	numbrr	00:02.90
9.	NooM	00:03.05
10.	Emil1233	00:03.23

Robots / programmatic solvers		info
1.	tlstyer	00:00.006
2.	cheyette	00:00.104
3.	4s4f4	00:00.240

* 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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2025-07-15 19:25:55

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