20+ JavaScript Sudoku Games - Free Code + Demos

Play Sudoku game made with pure JS. If you have a Sudoku grid that you couldn't solve it, bring it here and solve it using 'Sudoku Solver'. This pen uses Material design with pure JS and CSS.

In this demo, backtracking algorithm is used for generating the sudoku. Difficulty and solvability is totally random as I randomly left a number of hints from a full-filled board.

Sudoku layout

A common sudoku game.

A random sudoku board generator based on the difficulty selected

Generate and solve sudoku boards. Pause the game and pick up where you left off. Pick a cell and enter a number or choose from the list below the board. The gives instant feedback for correct or incorrect entries. Use delete or backspace to remove entries

Sudoku is build using react. For UI: react-bootstrap has been used. Also popovers are for selecting the numbers.

All generated using one starting puzzle, inspired by this blog post: https://mathwithbaddrawings.com/2017/01/04/1-2-trillion-ways-to-play-the-same-sudoku/ This only mixes up the columns and rows within their bands, but more options are coming.

Fill in every spot such that each square in each row, column, or box contains the numbers from 1 to 9 only once. When a number is highlighted orange, you will mark a spot on the grid with that number when you press it. When the number is highlighted green, you will mark the spot with a h...

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Generate and solve sudoku boards. Pause the game and pick up where you left off. Pick a cell and enter a number or choose from the list below the board. The gives instant feedback for correct or incorrect entries. Use delete or backspace to remove entries

Sudoku solver in ES6

Create a complete Sudoku from scratch with backtracking