Monthly Archives: April 2017

An Ardson Very Hard Workout


This post checkpoints Ardv2 78, the second review puzzle in A.D. Ardson’s Sudoku Very Hard collection. The puzzle skates by basic and the bv scan, but is tamed on the X-panel. Along with regular collection reviewing posts, I’m revising the … Continue reading

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A Run Through Ardson’s Very Hard Volume 2


This post begins a review of A.D. Ardson’s Sudoku Very Hard Puzzles, volume 2. The review will cover 10 pre-selected puzzles from 400, every 40 starting with number 38. Well, almost. The puzzle at the end of the previous post … Continue reading

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A Bypass 3-Fill on the Bus


This post reports an extension of the Sysudoku bypass to include 3-cell fills, and describes the recently republished collection of 534 puzzles, Michael Rios’ Mensa Sudoku, © 2005. It’s great to take flight, and take in what you can absorb … Continue reading

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More Satisfaction in Saturday 2


This post completes the last hour of the Satisfaction Sudoku tour of Sysudoku, with alternative solution paths beyond the bv scan in Saturday 2. It features a finned X-wing, a coloring wrap, and an alternative freeform pattern analysis with a … Continue reading

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