Sudoku Unlimited

Sudoku puzzles

Sudoku Unlimited is a PC Sudoku game built around solving number-placement puzzles, either solo or with another player. You fill grids by working out which numbers fit each cell, using notes and candidate tools to track possibilities. It includes Classic Sudoku and six variants: Jigsaw, Killer, Arrow, Thermo, Sandwich and Miracle.

A guided set of puzzles

A sequence of 98 puzzles across ten chapters starts with small grids and progresses through 4×4, 6×6 and 9×9 boards. Short explanations introduce new ideas as you go, and tools become available along the way. For Classic Sudoku, you can also generate fresh puzzles at three difficulty settings. Variant practice is repeatable, and a separate collection contains 140 prepared and generated puzzles.