The Digit Assistant partially solves your puzzle using the simplest solving techniques. You then work the puzzle using harder techniques only. At the two lowest difficulties, the Digit Assistant will do all the work for you - we prefer doing these levels without it.
You turn the assistant on in the Settings menu. This will put all of the cells that do not have answers in them into Note Mode. The notes for each cell show the answers that are not eliminated by the easiest techniques.
As you continue your game, the Digit Assistant automatically changes the notes to reflect your new answers. You may edit the notes by hand as well, using the digit buttons below or to the side of the puzzle. These changes may be undone using Undo. Or you may start over using the Reset option on the Settings page.
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