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

Difficulty: Super easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)