Sudoku — games.notepad.lv

Puzzle generator and solver: sudoku.js by Rob McGuire-Dale
  https://github.com/robatron/sudoku.js (commit 4362a13, 2025-12-17)
  License: MIT (full text in LICENSE.txt)
  Local modification: sudoku.random is a pluggable RNG (defaults to
  Math.random) so the daily puzzle can be generated from a seeded PRNG;
  the retry path keeps the `unique` flag.

Game UI (index.html, app.js, style.css): webdev.lv / notepad.lv.
Seeded PRNG: mulberry32 + cyrb-style string hash (public domain algorithms).
Translations (lv, en, ru, et, fi, sv, no, pl, lt, uk, nl, da, it, cs): notepad.lv.