1	6
		8	7
		1
6								7
						4
					1	9
						5	7

Difficulty: Harder (0)

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

Difficulty: Super hard (538)

							1
			3
	8
5							2
	9							8
							8
					9
	6

Difficulty: Super hard (324)

							1	7
		6		7
				1				5
9				6
				2		9
6	4

Difficulty: Very hard (0)