Move your selection through the grid with the arrow keys and use the space bar to indicate your selection.
Should you select a symbol that doesnt match the current symbol, you will lose a "match point", denoted to the right of the grid as such: Matches: 0/20. If you do not get to at least the minimum match requirement, you will receive no points and the game will end.
You receive 5 points for each match up to the required number of matches needed, and 10 for each match above that number.