Tag Archives: ultrahardcore

Recycle AIC Building on UHC 311

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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Beeby Finishes ultrahardcore 91

The Beeby series continues on trial wounded ultrahardcore 91 until the expanding coloring cluster can  take it home. Is your trial-less solution ready? Next up t is  a 1-way from 1r6c3 that is exended back to 3r2c3 for a second … Continue reading

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