Wayne Gould’s Extreme Su Doku Masterclass Part 2

Part 2 of Wayne Gould’s advice on using X-wings to crack Extreme Su Doku puzzles.
Tags: Gould's, Doku, Extreme, Masterclass, Wayne, Part
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Part 2 of Wayne Gould’s advice on using X-wings to crack Extreme Su Doku puzzles.
Tags: Gould's, Doku, Extreme, Masterclass, Wayne, Part
Related posts:
Thanks for the tip about rows with more than 2 possible “two:s”.