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Diabolical Sudoku grids

Puzzle number 1

Hits: 3

	6				9
	4			8			1	3
		1		7		8
3
	5	9		1		2	3
								4
		7		9		3
1	9			5			6
			4				9

• Calls single candidate 6 times
• Calls candidate lines 6 times
• Calls naked pairs / triples / etc 2 times
• Calls Simple coloring 2 times
• Calls Multi coloring 1 time
• Calls Nishio 1 time

Puzzle number 2

Hits: 15

3				4				5
		4		9	8	6
	5						7
	1						5
9	3			1			4	2
							9
	6						8
		2	7	8		5
7				3				4

• Calls single candidate 6 times
• Calls candidate lines 3 times
• Calls naked pairs / triples / etc 1 time
• Calls X-Wing, etc 1 time
• Calls Forcing chains 2 times
• Calls Nishio 1 time

Puzzle number 3

Hits: 22

8								1
		5	4		8	6
	6			9			5
5	9			8			7
		8	2		7	5
	4			5			8
	5			2			1
		6	1		3	2		5
3								7

• Calls single candidate 4 times
• Calls candidate lines 1 time
• Calls naked pairs / triples / etc 1 time
• Calls X-Wing, etc 1 time
• Calls Multi coloring 1 time
• Calls Nishio 1 time

Puzzle number 4

Hits: 34

			6					9
	9	6		2			7
	3				5	8	6
4	6				8	3
	8			5	6	9	2
		9	3				8	6
		8	7	6			9
9	5			4		6
6			5		9

• Calls single candidate 14 times
• Calls candidate lines 1 time
• Calls naked pairs / triples / etc 1 time
• Calls X-Wing, etc 1 time
• Calls Multi coloring 1 time
• Calls Nishio 1 time

Puzzle number 5

Hits: 4

			5
1		9			6		2
		6			8	7		3
					9
2				8
	3		7			8
		1
			2				1	6
		7				4	8

• Calls single candidate 19 times
• Calls candidate lines 2 times
• Calls naked pairs / triples / etc 1 time
• Calls Nishio 3 times

Puzzle number 6

Hits: 4

3		2	5	9
1		9			6	5	2
		6	1	2	8	7	9	3
7		8			9
2				8
	3		7		2	8
		1	8	6
8		3	2			9	1	6
		7	9			4	8

• Calls single candidate 6 times
• Calls candidate lines 2 times
• Calls naked pairs / triples / etc 1 time
• Calls Nishio 3 times

Puzzle number 7

Hits: 24

		9	8		4			1
	7			9			4
4					1	9
3					7	1
	2			8			3
		5	9					2
		7	5					8
	5			4	8		2
2					9	5

• Calls single candidate 4 times
• Calls naked pairs / triples / etc 1 time
• Calls X-Wing, etc 1 time
• Calls Nishio 1 time

Puzzle number 8

Hits: 2

3				5				6
	5	2				7	4
	9	8				2	5
			1		8
7				3				5
			5		4
	4	3				5	6
	2	6				3	9
9				6				8

• Calls single candidate 5 times
• Calls candidate lines 1 time
• Calls naked pairs / triples / etc 1 time
• Calls Multi coloring 1 time
• Calls Nishio 1 time

Puzzle number 9

Hits: 9

		4	5					9
	9			4			1
2					6	8
9					7	5
	4			1			8
		3	2					1
		9	7					3
	7			6			9
4					8	7

• Calls single candidate 5 times
• Calls candidate lines 2 times
• Calls naked pairs / triples / etc 1 time
• Calls X-Wing, etc 1 time
• Calls Nishio 1 time

Puzzle number 10

Hits: 91

								2
6	7				4			5
				8			1
		9	6					7
	5						3
7					3	1
	4			2
8			7				5	6
3

• Calls single candidate 25 times
• Calls candidate lines 4 times
• Calls naked pairs / triples / etc 2 times
• Calls X-Wing, etc 1 time
• Calls Multi coloring 2 times
• Calls Forcing chains 1 time
• Calls Nishio 1 time

Also in this section

• Sudoku Home
• Sudoku Solver
• Sample Easy Grids
• Sample Intermediate Grids
• Sample Hard Grids
• Sample Very Hard Grids
• Sample Diabolical Grids
• Unsolved Grids
• Unsolved Example Grid 1
• Unsolved Example Grid 2

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Copyright © Richard C Smith 2007 - 2012. This work is licenced under a Creative Commons Licence.