Tag Archives: ER XYZ-wing

Guide 775 Concluded


Here we continue with Gordon Guide 775, going through Sysudoku advanced methods, but trying particularly to invoke those brought up in the Guide. Last week, we found a regular XYZ-wing, a 231-wing to be exact, generating 11 new clues and … Continue reading

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Pitkow’s Super GMs


Here I review five preselected puzzles from Xaq Pitkow’s 25 Super Grand Master collection of 50 in his Sudoku, Vol. 5.  Only one of five clearly ranks as extreme, above the spotty Grand Master collection just reviewed.  I detail this … Continue reading

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Insane 425 Introduces the Boomerang


This post checkpoints a stunning XYZ finish on Insane 415 and demonstrates a cluster merge by LPO with Insane 425, as part of a review of KrazyDad’s Insane collection on http://www.krazydad.com .  A spotting technique is explained and named for a type of … Continue reading

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Stephens’ Extremes Snaps II


Here we continue with snapshots from the review puzzles from Stephens’ The Sudoku Addict’s Workbook.  The review covers 10 of 40 “Extreme” puzzles in this and Paul’s Mastering Sudoku Week by Week. The Extreme collection is highly recommended, even if … Continue reading

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KrazyDad Super Tough Snapshots


Here’s a show-and-tell on some krazy events of the Super Tough review.  The general review was in the last post. The puzzles come from http://www.krazydad.com . This is just the highlights, but it is a snap to download these puzzles … Continue reading

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