Tag Archives: coloring wrap

Classic Review Ends,OnEx 261 Escapes Trials


This post traces the bypass finish of Classic 240 and presents the review table for James Forest’s Classic Sudoku. Then it continues the update review of Manuel Castillo’s Only Extreme Sudoku with Only Extreme 261. Demonstrating a solution without trial, … Continue reading

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Classic 216 Bypassed and Only Extreme 132 Demoted


This post adds another bypass solving to the review of James Forest’s Classic Sudoku, Classic 216. Then a report on an update of the 10/24/17 post on Castillo’s Only Extreme 132, in which a hard, but indecisive not-both trial leads … Continue reading

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Classic 192 and Updated Only Extreme 3


First, a Basic trace of Classic 192. It can be solved in the bypass. In this post, James Forest’s Classic 192 is traced down in Basic. Then there’s a second Advanced level solution of Manuel Castillo’s Only Extreme 3, the … Continue reading

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Classic 48 Gets to the Crayons


The second Classic of Forest’s Classic Sudoku book 30 is a strategic win for Sysudoku Advanced. X-panel keys unlock an imbalanced web of 3, 6 and 8 candidates, allowing coloring clusters to carve it into four armies, which merge and … Continue reading

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KD Insane 485 Introduces the ALS Boomerang


This post is about the update of the 9/24/13 post on KrazyDad Insane v4, b8, n5. An unrecognized type of ANL found by Andrew Stuart’s Sudokuwiki solver is accorded a spotting technique, and a name suggesting the technique. When the … Continue reading

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Painting a World’s Hardest BARN


This post ends the review of World’s Hardest Sudoku Book with its Very Hard 134.  The puzzle is not all that hard, but does allow solution in a very pleasing way, for me, at least. Right after a basic with … Continue reading

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An Untyped UR Rattles World’s Hardest 188


The review of World’s Hardest Sudoku continues with a quick dispatch of puzzle 188 by a unique rectangle and straightforward coloring. The UR fails its type category, but the examination uncovers an almost accidental chain interpreted after the fact as … Continue reading

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