Monthly Archives: September 2017

A Surprising Dave Green Sunday 5-Star

Posted on September 26, 2017 by Sudent

My Sunday morning ritual Sudoku, the Dave Green 5-star of September 3, 2017,  sent me upstairs for PowerPoint support. This one breaks tradition by surviving Sysudoku basic, and with a heavy line marking. After no other advanced progress,  a four … Continue reading →

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Bookends of the Only Hard

Posted on September 19, 2017 by Sudent

This post checkpoints the only sysudokie bypass casualty and the only sysudokie basic survivor, in this second review of Manuel Castillo’s Only Hard Sudoku collection. The report of my first review was posted 1 ½ years ago, March 29, 2016. … Continue reading →

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A Well Hidden Pair in Only Hard 128

Posted on September 12, 2017 by Sudent

This begins a brief review of Manuel Castillo’s Only Hard Sudoku, preliminary to reviewing his more recent Only Extreme Sudoku. Both books are wordless collections of 400 puzzles, with identical formats. Thanks go to officers, members and guests of the … Continue reading →

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AIC Slinks Finish Only Extreme 3

Posted on September 5, 2017 by Sudent

This post continues the finishing coloring cluster expansion in Castillo’s Only Extreme 3, via not-both testing of AIC slinks.  After extending the blue/green cluster in the North bank via AIC slink, we continue with a second AIC slink adjoining the … Continue reading →

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