Developer website: Rosborough Tech Co.
MacSudoku generates and allows you to solve Sudoku (otherwise known as Su Doku) puzzles, which are deceptively simple and addictive logical puzzles that originated in Japan but have recently become popular around the world.
MacSudoku features 4 levels and 5 different sizes of high-quality, symmetrical puzzles, a puzzle timer, statistics, and an easy-to-use, intuitive interface.
What's New
Version 3.0.3: Removed product activation limitation, and implemented copy and paste between cells.
Requirements
Mac OS X 10.3 or later