Tag Archives: Sysudoku trace

Doing Every 4-Fill

In the Dave Green 5-star of 1/23/22, four 4-fills are available before starting the bypass values list, on r2, r8, c2, and c8. It brings up the possibility that 4-fills can solve this Conceptis puzzle by themselves? We normally put … Continue reading

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Dave’s Friday Labor Day Four-Star

This post traces basic solving on the first of three Labor Day puzzles by Dave Green.  The series is an opportunity to highlight the efficient and uncluttered basic level Sudoku solving with the slink marking bypass. In keeping with the … Continue reading

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