Sudoku FlowSudoku guides
Short, practical guides for the moments that ruin a game: a wrong digit you can't find, a habit that keeps causing errors, a board that suddenly won't move.
How to Find a Mistake in Sudoku
Five quick checks that find a wrong digit fast.
Read the guide →7 Common Sudoku Mistakes and How to Avoid Them
Seven mistakes that ruin most games, and the habit that prevents each.
Read the guide →Why Won't My Sudoku Solve? A Checklist
Stuck, or facing an impossible cell? Tell a mistake from a hard step.
Read the guide →Find the Mistake Sudoku
Find the Mistake is a quick Sudoku puzzle: a half-finished board where one digit breaks the rules. You get five seconds to spot it before the answer is shown on the board.
Read the guide →
Want more boards like this?
We also make a Sudoku app for iPhone, iPad, Mac and Android. There are no ads in it at all, it works offline, and when you ask for a hint it shows you the technique instead of just filling in a number.
Sudoku Flow is made by Rubigo Games, the developer of the Sudoku app recommended on this site.