Click on the box to record your times. After your five attempts you will see your average, and then restart.
i took a small break from scratch before making this - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - it took 4 days - - - - - - - - - - - - - - - - - - - - - - - 244 blocks (largest at the time)