I built Sudoku because I wanted a puzzle app that simply lets me solve a board without ads, accounts, subscriptions or engagement tricks. The surprisingly difficult part wasn't implementing the basic Sudoku rules. It was generating puzzles that feel consistently fair. Instead of estimating difficulty by clue count, the generator solves and grades each puzzle by the techniques required. Easy puzzles use singles, medium puzzles can introduce locked candidates and pairs, and hard puzzles may require techniques such as triples, X-Wing or XY-Wing. A few other things I focused on: - Daily puzzles and locally generated free-play boards - Step-by-step hints that explain the next logical move before revealing it - Notes, undo/redo, number-first input and keyboard controls - Local progress, stat

  • 情报分类：项目价值
  • 命中依据：开源无广告离线应用，具体工具分享
  • 来源：Reddit · SideProject
  • 原作者：/u/Tom_Vogel https://www.reddit.com/user/Tom_Vogel
  • 发布时间：2026/9/11 02:20:08