72
What do the numbers mean?
(ani.social)
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It's a logic puzzle, no math is involved. It used numbers but those could be replaced with the letters 'A' through 'I' and function the same. Otherwise correct.
I started typing an angry comment about how math is logic and therefore sudoku is a math puzzle, but when I got to the second paragraph about graph theory I realized I was already losing the argument I was having with no one
Math is more than just numbers and arithmetic. There's even a Wikipedia page dedicated to the Mathematics of Sudoku.
That's completely different from a Sudoku puzzle itself or the process of solving one.
Sure, it's math in the way that everything can be described using math, but you wouldn't explain 'purple' as "the math of calculating what volume of blue to add to a given volume of red in order to reach the desired hue."