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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)