The black ring will start on the green circle and randomly "move" around. When it reaches the red circle it will stop and tell you how long it took. FYI Since it is randomely generated, then technically it can take infinity(that probably means that there's a 1 in infinity chance of that happening). Although it can still take a long time!
this is my first shared project, so it's not the best. sound effect from soundbible.com CHALLENGE!! The shortest time is 0.125 (by code-88 / me) Can You Beat The Record??