Clear all the digits from the grid by eliminating pairs of digits that are
the same or that sum to 10. The pairs can be eliminated if they are in the
same column with no other digits between them, or if they have no digits
between them when scanning the grid from top to bottom, left to right. That
is, the right end of a row wraps to the left end of the following row. Click
on a digit to select it and then on a match to eliminate them. Once there are
no matches left, click Deal and all the remaining digits are readded to
the end. See if you can beat the "best" or "worst" scores in this logic game.