SudokuVariants – play and construct different variants of Sudoku
Hi HN, I've been working on this Sudoku web app for the past couple of years, on and off during free weekends and afternoons. I started working on it because I was bored during COVID, and Cracking the Cryptic had just become popular on YouTube, which got me wondering how hard it could be to make a Sudoku app. The main idea is for the app to understand the constraints and know how to solve Sudoku grids (and not just be a simple Sudoku drawing/playing app). When it comes to classic Sudoku, the solver doesn't support anything more complicated than X-Wing, but it understands the…
SudokuVariants – play and construct different variants of Sudoku launched on January 21, 2025 with 28 votes, #597 of 6,142 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
SudokuVariants is a web app that plays and constructs multiple Sudoku variants including killer, sandwich, arrow, thermo, palindrome, German whisper, kropki, and many others. It's designed for Sudoku enthusiasts who want to solve puzzles beyond classic Sudoku. The app distinguishes itself by understanding puzzle constraints and implementing a solver that works across variants, rather than being a simple drawing or playing tool.
written from the facts on this page · September 2026
From the sources
Play and construct Sudoku with multiple Variants. Supported Sudoku variants: Killer, Sandwich, Kropki, XV, Greater Than, Diagonal, Consecutive, Arrow, Themo, Non Consecutive, Palindrome, German Whispers, Anti Knight, Anti King Sudoku, Even-odd, Windoku, Zipper and Renban.
Saving snapshot will delete old snapshot with same grid configuration (if exists). Saving snapshot will save grid in current configuration if grid isn't saved or if it's saved as draft. Enter sudoku grid as text (use 0 for empty cells). Only classic sudoku grids can be imported as text. Importing grid cannot be undone, please save all previous changes. (Load Example) All public grids must be solvable by SudokuVariants. Looking forfrom sudokuvariants.com
In the maker’s words, at launch
Hi HN, I've been working on this Sudoku web app for the past couple of years, on and off during free weekends and afternoons. I started working on it because I was bored during COVID, and Cracking the Cryptic had just become popular on YouTube, which got me wondering how hard it could be to make a Sudoku app. The…
Does a similar job
all alternatives →- IMI Made a Sudoku Game2024 · sudoku-aj.netlify.app · ▲40
Source: https://github.com/alabhyajindal/sudoku/blob/main/index.html
- SWSudoku with 0 Bells or Whistles2023 · ▲48
Hello HN, I've created a new Sudoku app for iOS and Android that prioritizes simplicity and privacy. It's free to download and use, and I'd be grateful for any feedback or suggestions. Features: > 4 difficulty levels, accessible at any time > No personal data collection of any kind > Clean, minimalistic design that focuses on the game > Takes up significantly less space than other popular apps (by a factor of about 10x) > Minimal use of advertisements I was frustrated by how many of the popular Sudoku apps feel excessively over-engineered, consume a lot of storage space and some that even…
SudokuAI – Intelligent Sudoku Solver2025 · sudokuai.space · ▲13Application that scans & solves Sudoku puzzles from images.
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