this post was submitted on 08 Jun 2023
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When you first crack open a new sudoku puzzle, do you look at the rows or columns first? Or do you work in blocks? What's your strategy?

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[โ€“] [email protected] 3 points 1 year ago (1 children)

What I usually do is going through the puzzle doing snydernotation first (marking when a number can only be in 2 places in a box)

Most easy puzzles can be done with only that, then when it stops being fruitful I fully mark the puzzle up and start looking for things in roughly this order:

  • triples
  • x-wings
  • simple-fishes (skyscraper, 2-wing kites)
  • xy-wings
  • xyz-wings
  • swordfishes
  • chaining techniques

That's at least my basic rough order of going through solving a puzzle.

[โ€“] [email protected] 1 points 1 year ago

That's... a lot. I'm assuming those are techniques for efficiently solving sudoku puzzles? I never thought about it, but it makes sense that there would be defined methodologies for tackling this kind of puzzle.