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Tag Archives: Manuel Castillo
A Lite Update on Castillo’s Only Extreme 347
This post updates a solution by coloring trial in the review post of 12/19/17. A bypass of 6 4-fills resolves 3 of them immediately, but goes no further than the original 3-fill only bypass. Then we follow Beeby through a … Continue reading
A Lite Coloring Update of Castillo’s Only Extreme 261
This post is the first of several which update earlier review solutions to include a new guy in town, lite coloring. The earlier posts will be left as they are, except for added links to these updating posts. Instead of … Continue reading
Posted in Advanced Solving, Puzzle Reviews
Tagged Lite coloring, Manuel Castillo, Only Extreme 347, review update
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Only Extreme 390 is Advanced
This post finishes the updates on Manuel Castillo’s Only Extreme Sudoku with a less advanced OnEx 390. This one is a better example of the Sysudoku XY Railway than was the original post. No trials were required in the ten … Continue reading
Sudokuwiki Solves Only Extreme 347 by AIC
In the original Only Extreme review, OnEx 347 was an example of a coloring trial on a limited cluster generated by pattern analysis. In this update, Andrew Stuart’s solver demonstrates a solving path to a final coloring without trials, via … Continue reading
Only Extreme 304 Scavenger Hunt
This post finishes the updated review of Only Extreme 304, displaying the Sudoku moves listed last week for the scavenger hunt. The ALS X-chain boomerang starts with the 9-chain emerging from r9c7 and terminating on the 9 candidate of ALS … Continue reading
Only Extreme 304 is AIC Level
This post and the next update Castillo’s Only Extreme Sudoku review with a solution of OnEx 304 without trials. Most of the solution path is in AIC building, the most challenging level of Sysudoku Advanced. The only move prior to … Continue reading
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
Posted in Uncategorized
Tagged AIC boomerangs, AIC seeking level, ALS boomerang, bypass 3-fill, Classic Sudoku, coloring wrap, confirming A, confirming ANL, irregular ANL victim, James Forest, Manuel Castillo, Only Extreme Sudoku, pattern freeforms, pattern orphans, unique rectangle 2b
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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