Grid Logic

Symbols in rows, columns, boxes. Four variations on the theme, each one a live deployed app you can poke at.

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Mini Doku preview

Mini Doku

Four-by-four sudoku for quick solves. Highlight conflicts. Notes mode for candidates. Three difficulty levels. Timer and best-time per difficulty saved.

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Chroma Doku preview

Chroma Doku

Nine-by-nine sudoku using nine colors instead of digits. Tap cell, choose color from palette. Conflict highlight in red. Note mode shows mini swatches.

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Glyph Doku preview

Glyph Doku

Six-by-six sudoku using six inline SVG glyphs as symbols. Glyph palette at bottom. Conflicts flash. Notes mode shows mini glyphs.

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Killer Doku preview

Killer Doku

Nine-by-nine killer sudoku with cages showing sum constraints. Tap cell to enter digit. Cage borders dotted. Auto-check sums on completion.

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