Tag Archives: Hidden XY chains

No THLS Case for Hidden XY Chains


This post and the next demonstrate that the examples presented in The Hidden Logic of Sudoku as requiring “Hidden” XY Chains actually have alternative, and much less demanding, resolution paths in the Sysudoku repertoire.  The burdensome maintenance of symmetry grids is … Continue reading

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Hidden XY Chains Are Reverse XY AIC


This post demonstrates that every hidden XY chain has a recognizable AIC counterpart on the normal grid, nrc space. That means it is not necessary, if you are AIC literate,  to generate and maintain the grid spaces in which hXY … Continue reading

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