There are five difficulties to choose from.
All five puzzles have the same solution.A) Novice.
B) Apprentice (mainstream edition).
C) Grand Master (35 Intersections, 5 Naked Pairs, 3 Naked Triplets, 1 Naked Quad,
3 Skyscrapers: one in g2 and two in g3,
2 Two String Kites in g2).
Select to view GRID numbers.The advanced techniques are needed in 2 different grids.D) Guru (38 Intersections, 3 Naked Pairs, 2 Naked Triplets, 1 Naked Quad, 1 Hidden Quad, 1 Skyscraper, 7 Two String Kites, 2 Empty Rectangles, 1 Turbot Fish, 2 Finned X-Wing, 4 XY-Wings, 3 XYZ-Wings, 9 Y-Wings, 1 Uniqueness Test 3, 1 Uniqueness Test 4, 1 XY-Chain up to 5 links, 4 longer XY-Chains, 3 XY-X-Chains up to 3 links, 5 longer XY-X-Chains, 2 Grouped XY-Chains up to 3 links).
Some of the less sophisticated advanced techniques are likely not needed.E) Chief Wizard.
Solvable using logic only? JSudoku needs 1 Recursively Solve, which makes 9 guesses and traverses 2343 nodes.Regular Samurai #27A (Novice)Rating based on required solving techniques: Moderate
009000000100000005000431020001020700020008016080090050500003900700085000000006000
000006005000320010039000007000000100703904000000005008000700000000400720000200500
900605000000000000000004000470063800010040007000000030000097000009030000000000000
067000000003008009000050000090045007700009500600000200900800000180000302006570000
000007000000600050000000800040200008900004007000010500000000000095006100806790400
Regular Samurai #27B (Apprentice)Rating based on required solving techniques: Tough
009000000100000005000431020001000700020008016080090000500003900000085000000006000
000006005000320010039000007000000100703904000000005008000700000000400720000200500
900605000000000000000004000470060800010040007000000030000297000000030000000000000
067000000003008000000050000290045000700009500600000200900000000180000302006570000
000007000000600050000000800000200008902004007000010500000000600095006100806790000
Regular Samurai #27C (Grand Master)Rating based on required solving techniques: Extra Hard
009000000100000005000431020001000700020008016080090050500003900700085000000006000
000006005000320010039000007000000104703904000000005008000700000000400720000200500
900605000000000000000004000470063800010040007000000030000297000000030000000000000
067000000003008000000000000090045000700009500600000200900000000180000302006570000
000007000000600050000000800000200008900004007000010500000000000095006100806790000
Regular Samurai #27D (Guru)Rating based on required solving techniques: Ultra Hard
009000000100000005000431020001000700020008016080090050500000900000085000000006000
000006005000320010039000007000000100703904000000005008000700000000400720000200500
900605000000000000000004000400060800010040007000000030000297000000030000000000000
067000000003008000000050000090045000700009500600000200900000000180000302006570080
000007000000600050000100800040200008900004007000010500000000600095006100806790000
Regular Samurai #27E (Chief Wizard)Rating based on required solving techniques: Hellish Nightmare Solvable using logic only?
009000000100000005000431020001000700020008016080090050500000900000085000000006000
000006005000320010039000007000000100703904000000005008000700000000400720000200500
900605000000000000000004000470060800010040007000000030000297000000030000000000000
067000000003008000000000000090045000700009500600000200900000000180000302006570080
000007000000600050000100800040200008900004007000010500000000600095006100806790000
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