Bring your own puzzle or create a "New Game" from 5 ranges of difficulty. Solve the puzzle by selecting the next digit and clicking on the space to place it. When there is a choice of two or more digits in a space go ahead and "Make A Copy." Then play each choice in each copied game and continue to solve until you finish the puzzle or find an unsolvable game as shown by the red color dots. A completed game will have all green color dots.
Little Digits are provided to aid solution. The Hints with red Little Digits should be avoided while green Little Digits shows a solution exist aided by the yellow color dot which tells which row, column or block that a solution is located in. To change the color of the Little Digits, first click on the "Clear" button to remove and digit currently selected, then click on the "Color" button to find your color, then click on the Little Digits.
If you want to mark a digit in the solution graphs click the "Mark" button.
"Undo" is an easy way to back up to the previous marked digit.
"Cas-cade" button will align the open games for easy display.
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