(Click for larger)

Step 1: Starting at 0, gently pull down as though opening the lock, then slowly spin the dial counter-clockwise until it sticks. If the number is a whole number (i.e. not resting in between two numbers) record it, continuing the process until you reach 0 again. At this point you should have 5 whole numbers.

Step 2: Four of the five numbers will end in the same digit — the one that doesn’t is the last number in your lock’s three-number combo. Since certain numbers on a padlock are inextricably linked, this number narrows down the possible combinations to 100

Step 3: Trial-and-error out the combination grid linked below, and pull the lock open.

Life sentence via Thrillist.