Goal: clear the board.
You can remove horizontally or vertically neighbouring numbers that are either identical or make the total of 10.
You can match the last number of the line with the first in the next line if they are identical or make the total of 10.
If you can't see any moves left, click «?» to see a hint (the matching numbers, if there are any, will be highligted).
When there are no moves left click «+» to add new lines.