Hoshi's Hoshi's Sudoku
A new daily sudoku every day, plus endless puzzles from easy to expert. Every one has exactly one solution.
Free daily sudoku, from beginner to expert
Hoshi's Sudoku has a new daily puzzle every day (gentle early in the week, tougher by the weekend) and endless puzzles at four levels. Easy puzzles can be solved by spotting the only number that fits a cell, which makes them good sudoku for beginners. Expert puzzles need classic techniques like X-Wing and Swordfish.
How difficulty works here
Every puzzle has exactly one solution, and it's graded by the techniques you need to solve it, not by how many numbers it starts with. You never have to guess.