Sudoku
by Andrea Arevalo
Sudoku is a popular logic-based puzzle consisting of 81 cells in a 9x9 grid made up of 3x3 sub-grids called regions. The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1–9 exactly once.
This Widget features eight thousand of these puzzles that you can solve with your brain, Konfabulator, and a keyboard or mouse.