ddidderr 682470a241 docs: add extreme Sudoku example ...

Transcribe the extreme 9x9 Sudoku puzzle from the provided image into the
plain-text example format accepted by the solver. This gives users another
ready-made input for exercising sparse puzzles from the command line.

Update the README example commands so the new file is visible alongside the
existing hard puzzle.

Test Plan:
- cargo run -- sudoku-examples/extreme.sudoku

Refs: none

2026-04-25 21:08:54 +02:00

..

extreme.sudoku

docs: add extreme Sudoku example

2026-04-25 21:08:54 +02:00

hard.sudoku

docs: add hard Sudoku example

2026-04-25 21:05:31 +02:00