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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)