Tag Archives: ALS node

Andrew’s Solver Tames Worlds 200

This post walks through the “very  hard” part of the solution path taken by  Andrew Stuart’s Solver through puzzle 200 of The World’s Hardest Sudoku Book by authors unknown. This is a remarkable turn of events for a blog devoted … Continue reading

Posted in Advanced Solving, Expert Reviews, Extreme Solving, Puzzle Reviews, Uncategorized | Tagged , , , , , , , , | Leave a comment

The ALS Node in the AIC

This post explains how an Almost Locked Set, an ALS, can be a node in an AIC, providing a slink between two winks connecting candidates of different numbers. In this blog the ALS was first applied in the Sysudoku version … Continue reading

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