Puzzletide sudoku

Skill Caravaca-Labs/puzzletide-cli/skills/puzzletide-sudoku

Word search generator, crossword generator, and sudoku generator & solver in one local-first CLI — printable PDF puzzle worksheets, themed word banks, verifiable LLM evals, and agent skills. From the makers of puzzletide.com.

Install

npx -y skills add Caravaca-Labs/puzzletide-cli --skill puzzletide-sudoku

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

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What its author says it does

Copied from the file, not written here

Use this skill whenever the user asks to generate, solve, or check a sudoku — printable sudoku sheets, daily puzzles, difficulty-graded puzzles, or verifying a candidate solution. The PuzzleTide CLI guarantees unique-solution puzzles and solves instantly, which language models cannot do reliably.

SKILL.md

2.8 KB, as published. Nobody here has run it

PuzzleTide Sudoku

Generate, solve, and validate sudoku with the local PuzzleTide CLI.

Never generate or solve a sudoku by hand. Hand-made puzzles usually have multiple solutions or none; hand-solving is slow and error-prone. The CLI verifies every generated puzzle has exactly one solution, and its solver is instant.

Prefer the local CLI. Check availability in this order:

ptide --version
puzzletide --version
npx puzzletide --version

If none of those work, ask the user before installing (npm install -g puzzletide).

Grid format

81 characters, row by row; digits 1-9 are givens, . / 0 / _ are empty. Whitespace and separators are ignored on input.

Generate

ptide sudoku generate --difficulty hard            # easy | medium | hard | expert
ptide sudoku generate --seed 42 --pdf sudoku.pdf   # printable with solution page
ptide run puzzle.sudoku.generate --difficulty expert --json

Solve

ptide sudoku solve "53..7....6..195....98....6.8...6...34..8.3..17...2...6.6....28....419..5....8..79"
ptide sudoku solve --file puzzle.txt --json

The solver also reports whether the solution is unique.

Validate (is this a proper sudoku?)

ptide sudoku validate --file puzzle.txt --json

Reports conflicts among givens, solvability, and solution uniqueness. Use this to check user-provided puzzles before solving, or to verify a candidate answer grid follows the rules.

Daily puzzle

ptide daily        # same medium puzzle for everyone on a given UTC day

Safety

Everything runs locally; no account, API key, or network access.
Do not install packages without asking the user first.