SudokuSolver Forum

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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Here a mini-mini Walktrough of the #27C (Grand Master) puzzle.

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