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.	IceRune	00:04.16
2.	Preston10	00:05.18
3.	PuzzleMaestro	00:05.19
4.	Kukko	00:06.61
5.	Fave Fang	00:10.34
6.	SophieK	00:11.83
7.	CroMa	00:16.16
8.	DoubleA	00:20.72
9.	LeeRe	00:21.17
10.	Horn	00:23.41
11.	TrimTom2	00:33.74
12.	BlueOcarina	00:39.13
13.	kaerdins	00:54.24
14.	justsoso987	00:59.87
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This Week
1.	IceRune	00:04.16
2.	Horn	00:49.33
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Today
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MO3
1.	Douglas Shamlin Jr.	00:02.80
2.	vowels	00:03.05
3.	Vezzick	00:04.08
4.	numbrr	00:04.10
5.	qqwref	00:04.12
6.	Nick	00:04.16
7.	Preston10	00:04.31
8.	BrownJohnDoe	00:04.45
9.	NooM	00:04.85
10.	Eskimosnake	00:05.09

AO5
1.	Douglas Shamlin Jr.	00:02.90
2.	vowels	00:03.23
3.	Vezzick	00:04.30
4.	Nick	00:04.31
5.	BrownJohnDoe	00:04.53
6.	numbrr	00:04.57
7.	qqwref	00:04.60
8.	Preston10	00:04.62
9.	Eskimosnake	00:05.30
10.	Make	00:05.68

AO12
1.	Douglas Shamlin Jr.	00:03.22
2.	vowels	00:04.61
3.	Vezzick	00:05.04
4.	BrownJohnDoe	00:05.25
5.	Preston10	00:05.32
6.	Nick	00:05.47
7.	numbrr	00:05.53
8.	qqwref	00:05.80
9.	Eskimosnake	00:05.98
10.	Dymond	00:06.30

Robots / programmatic solvers		info
1.	tlstyer	00:00.006
2.	cheyette	00:00.122
3.	4s4f4	00:00.235

* 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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2026-02-27 07:58:56

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