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.	piupiu	00:08.01
2.	Preston10	00:11.70
3.	jaripetteri	00:23.15
4.	Ecarlate	00:27.44
5.	Partimento	00:35.59
6.	Connaisseur	00:39.42
7.	horst	00:43.70
8.	Francesco Caputo	00:53.55
9.	Pumpkin2017	00:54.32
10.	eichssy	01:06.21
11.	thrasymachus	01:38.65
12.	maruisan	04:27.99
13.	Soham Bhosale	05:14.38
14.	Saakshi	07:44.19
15.	big_rich	24d 20:31:23.64
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This Week
1.	piupiu	00:09.66
2.	jaripetteri	00:23.15
3.	eichssy	01:06.21
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Today
1.	piupiu	00:11.61
2.	eichssy	01:06.21
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4.	--- empty ---	--:--
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6.	--- empty ---	--:--
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MO3
1.	Douglas Shamlin Jr.	00:06.33
2.	Vezzick	00:06.69
3.	BrownJohnDoe	00:06.78
4.	vowels	00:07.95
5.	numbrr	00:08.51
6.	Make	00:09.96
7.	Nick	00:10.72
8.	BingBongBob	00:11.12
9.	IceRune	00:11.16
10.	Eskimosnake	00:11.79

AO5
1.	Vezzick	00:07.38
2.	Douglas Shamlin Jr.	00:07.51
3.	BrownJohnDoe	00:07.60
4.	vowels	00:09.59
5.	Make	00:10.32
6.	numbrr	00:10.41
7.	Nick	00:11.53
8.	BingBongBob	00:13.24
9.	catapostrophe	00:13.52
10.	missPear	00:14.08

AO12
1.	Douglas Shamlin Jr.	00:08.69
2.	BrownJohnDoe	00:11.44
3.	Vezzick	00:11.97
4.	vowels	00:14.13
5.	BingBongBob	00:14.35
6.	Dymond	00:15.42
7.	Nick	00:15.75
8.	missPear	00:16.29
9.	Make	00:16.33
10.	numbrr	00:17.48

Robots / programmatic solvers		info
1.	tlstyer	00:00.006
2.	cheyette	00:00.120
3.	BertinSylux98	00:00.280

* 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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2025-08-07 12:41:26

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