Press the four arrow keys randomly trying to keep the number of times pressed as close as possible WITHOUT looking at your progress. Then press Space to see your score: 0 being the best. The ACCURACY is the number of times you pressed the keys subtracted from each other. If you get negative numbers, then the score is really just that number, but positive. (ex. -7 = 7. -8 = 8.) REMEBER: 0 is the best score!!