15	9							13				5	14	7
		3			7				2						4
		10				3						13			2
	2						1				10			11
			5		3			6	1	16	2			13	9
	4	9	12					10		15			16		5
		14	10	13			7				8	9
		4	11		2		10		3	1			6
		16			15	4		9		10		6	12
			8	16				2			12	3	5
9		5			13		8					4	10	6
14	12			8	5	11	2			9		16
	13			12				8						15
4			6						9				13
2						10				13			4
	5	1	3				15							16	7

Difficulty: Very easy (0)

15	9							13				5	14	7
		3			7				2						4
		10				3						13			2
	2						1				10			11
			5		3			6	1	16	2			13	9
	4	9	12					10		15			16		5
		14	10	13			7				8	9
		4	11		2		10		3	1			6
		16			15	4		9		10		6	12
			8	16				2			12	3	5
9		5			13		8					4	10	6
14	12			8	5	11	2			9		16
	13			12				8						15
4			6						9				13
2						10				13			4
	5	1	3				15							16	7

Difficulty: Very easy (0)

			8	7			9	15	4		6	11		1
	13		2				15		14			6	12
9		12			6		3	8				2
3			14						11		10				4
4		14		8			1				11			3	15
							6			15					2
		4					13		6		1
	12	11			4	14				13	3				7
12				13	5				3	8			11	7
				15		8		13					10
11					1			6
1	5			11				2			8		15		9
10				6		4						7			5
			11				8	16		5			3		1
		5	13			12		4				16		8
	3		12	5		1	7	9			16	15

Difficulty: Very easy (0)

5	4		6		10	12				11	9
1	13						16	8		12	14		6	4
								5	15		10		7
						5			1	4					10
	16			3	9		12		6				5		4
11	8							14	13			6		16
15		12	10			13	8	4		5	3	16
		13		11	15		5	7	10	9				12	2
8	15				11	1	7	10		2	4		16
			16	1	6		13	3	14			11	12		5
	1		2			3	4							14	16
3		4				2		15		13	1			8
12					13	10			4
		15		9		7	1
	6	14		13	4		11	9						15	7
				5	16				8	15		3		6	13

Difficulty: Super easy (0)