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How do you tackle a sudoku puzzle? (lemmy.ml)

submitted 1 year ago by aRatherDapperFox@lemmy.ml to c/asklemmy@lemmy.ml

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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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[–] t0fr@lemmy.ca 2 points 1 year ago

Start with a random number, look to see where the rest are in the grid, and look at the columns and rows to see if there are any easy ones to fill in, then move on to the next number.

Then there are a few other algorithms I have to use if the sudoku problem is more challenging. Looking at individual lines to see if there are missing numbers. Try to figure out where numbers absolutely cannot go to narrow things down.