Sudoku is a logic-based number puzzle game. It is played on a 9x9 grid that is divided into 3x3 sub-grids, also known as "regions". The objective of the game is to fill all the empty cells on the grid with numbers from 1 to 9, so that in each row, column, and region, all numbers appear only once. The player has to analyze the given numbers on the grid and deduce which numbers should be placed in the empty cells. There are no mathematical calculations involved, but rather the player has to use logic and reasoning to figure out the correct numbers to place. To make the game more challenging, the player can choose between different levels of difficulty. The easiest level is the “Easy” level, which is ideal for beginners, while the “Expert” level is only recommended for experienced players. Sudoku is a great way of exercising the brain, and it can be even more fun if played with friends or family. It is available in both physical and digital form, and can be enjoyed by both kids and adults.
Discontinued It seems that the project is no longer updated, but the latest version, 2.2.0, released in July 2012, is fully working and can still be downloaded from the official website.