There are four difficulties to choose from.
All four puzzles have the same solution.A) Novice.
B) Apprentice (mainstream edition).
C) Master (20 Intersections, 2 Naked Pairs, 1 Naked Triplet, 2 Skyscraper, 3 XY-Wings).
D) Guru (27 Intersections, 5 Naked Pairs, 1 Naked Triplet, 1 X-Wing, 1 Skyscraper, 3 Turbot Fishes, 1 Finned Swordfish, 1 Grouped Turbot Fish, 4 XY-Wings, 2 Y-Wings, 1 XY-Chain up to 5 links).
Regular Samurai #7A (Novice)Rating based on required solving techniques: Moderate
000740008020100000000000003050004000068090100400000500500260000600000000030500000
000000000000869040200000610000006200008007000021000380000000034000090000000020100
000800000000100000000000000430000070020040006500703081000000000000081000000009000
000003000400180000000000000000070082002009000007800009700308000090005630250000000
000000000000060703000080050200001000040005000006840001005026000000000300800030540
Regular Samurai #7B (Apprentice)Rating based on required solving techniques: Barely Hard
000740008020100000000000003050004000068090100400000500500060000600000000030500001
000000000000869040200000610000006200008007000021000380000000034000090000005020100
000800000000000000001000005000000070020040006500703081000000000000081000004009007
006003000400180000000000004000070002002009000007800009700308000090005630250000000
000000000000060703007000050200001000040005000006040001005026000000000300800030540
Regular Samurai #7C (Master)Rating based on required solving techniques: Super Hard
000740008020100000000000003050004000068090100400000500500060000600000000030500000
000000000000869040200000610000006200008007000021000380000000034000090000000020100
000860000000100000000000000000000070020040006500703081000000000000081000000009000
000003000400180000000000000000070082002009000007800009700308000090005630250000400
000000000000060703000080050200001000040005000006840001005026000000000300800030540
Regular Samurai #7D (Guru)Rating based on required solving techniques: Ultra Hard
000740008020100000000000003050004000068090100400000500500060000600000000030500000
000000000000869040200000610000006200008007000021000380000000034000090000000020100
000800000000100000000000000000000070020040006500703081000000000000081000000009000
000003000400180000000000000000070082002009000007800009700308000090005630250000400
000000000000060703000080050200001000040005000006840001005026000000000300800030540
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