Monthly Archives: February 2021

An ALS Map for UHC 311

Posted on February 23, 2021 by Sudent

This post describes a humanly practical way to identify ALS build an ALS map. The next considers how to use the map to build AIC and find ALS_XZ. The tools and procedures for ALS maps are demonstrated with the review … Continue reading →

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Recycle AIC Building on UHC 311

Posted on February 16, 2021 by Sudent

This post shows how the AIC building done by the review solvers on ultrahardcore 311 can be systematically duplicated by a human solver. The technique is a graphic one, very amenable to ©PowerPoint graphics, and slink marking of Sysudoku Basic. … Continue reading →

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Dov Introduces Lite Coloring of ultrahardcore 311

Posted on February 9, 2021 by Sudent

This post finishes the lite coloring revisit of past trials with Dov Mittelman’s lite introduction. It leads to a solution of Stefan Heine’s UHC 311 without trial. This puzzle occupied 3 posts in the ultrahardcore review, starting with November 3. … Continue reading →

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Lite Coloring Avoids Trials in KrazyDad 425

Posted on February 2, 2021 by Sudent

This post backs up your lite coloring effort, I hope, on KrazyDad 425. The initial lite trees deliver a cluster merge, and as these grow, lite coloring gives two confirmations and a coloring wrap to finish without trial. The first … Continue reading →

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