Tag Archives: Sudoku Master Class

Master Class 120 Completes the Update


This post concludes the review update of Tom Sheldon’s Master Class Sudoku and offers an amended review table. The bypass on Master Class 120 is strong enough to keep line marking fill strings short. There are two naked singles, one … Continue reading

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

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

PencilPress 65 and Master Class 90


This post continues the review of PencilPress Extreme Sudoku and the update of the review of Master Class Sudoku by Tom Sheldon. Each PencilPress bottom right seems to have its own little novelty.  Hopefully, you found the one coming up … Continue reading

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

Stuart’s Avoidable Rectangle


In The Logic of Sudoku, Andrew Stuart introduces a UR method in which corners on one side are known values, i.e. clues, and remaining candidates are prevented from forming a deadly rectangle with these clues.  This is his Avoidable Rectangle. … Continue reading

Posted in Advanced Solving, Expert Reviews, Stuart | Tagged , , , , | 5 Comments