Sudoku Overview

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There are some powerful tools build in the program.
You can ask for a small hint, a big hint or ask the computer to take a step for you. You can undo and redo rverything you do. There is a tool that highlights every cell with a selected number. Into Sudoku can keep the candidate values (sometimes refered to as pencil marks) up to date for you, but you can turn this off. These are just a few of the tools that are in the Sudoku Tools.

Sudoku Tools
Cells can be colored and links can be drawn using the drawing tools. You can draw solid lines and dashed lines to show the difference between strong and weak links.

Drawing Tools
Candidate values can be filtered. This is especially very useful for the colors technique.

Candidate Filter
You can zoom in and out on the sudoku board.