To show you how to calculate the Distances filter for a Pick 3 number here a step by step example.
Step 1: Divide the number into separate digits: 021 => 0 2 1 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 0 to 2 = 2 2 to 1 = 1 1 to 0 = 1 Step 3: Combine the filters to a string: 2 1 1 = 211