The basic goal is simple ? jab the grey square as the orange circle fully enters it.
If you jab the grey square at just the right time, you are awarded 10 points ? a perfect jab. If you jab the square a little too early or a little too late, you are awarded only 1 point.
However, if you allow an orange circle to pass through a grey square without jabbing it, 5 points get deducted off your score.