Free 9×9 Sudoku, Twisted

Two live variants so far, with more on the way as we build out this side of the site.

Same Standards, Smaller Grid

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Familiar Format

King-Size 16×16 is our flagship, but the classic 9×9 grid is where most solvers start. This section keeps that format, with new mechanics layered on.

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Hand-Verified Puzzles

Every 9×9 variant gets the same unique-solution guarantee as our 16×16 books — no guessing, no ambiguous grids.