Tag Archives: unique rectangle type 3

A Bracket Busting Dave Green 4-Star


Here’s the  basic trace on the Saturday Dave Green 4-star shown at the end of last week’s post. It survived the three Sysudoku Basic  phases: bypass, box marking and line marking. It’s the first I remember. Let’s talk through the … Continue reading

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PencilPress 81 and Master Class 110


This post concludes the review of PencilPress’ 500+ Sudoku Extreme Puzzles, and adds another puzzle to the review update of Tom Sheldon’s Master Class Sudoku. T The final score was PencilPress Extreme 0, Sysudoku Bypass 10. If “Extreme” means requiring … Continue reading

Posted in Advanced Solving, Basic Solving Procedures, Expert Reviews, Puzzle Reviews, Sheldon, Sheldon | Tagged , , , , , , , , | Leave a comment