Guinness World Records Challengers

Challenge Rules

• Standard commercially available dominoes must be used for this attempt with dimensions equal to or larger than 39 x 19 x 7 mm (1.5 x 0.75 x 0.25 in).
• Dominoes must be arranged in a single layer, not touching one another, on a flat surface prior to the attempt.
• Only one hand may be used for this attempt, the other must stay behind the back.
• Start with hands flat on the table next to dominoes.
• Dominoes to be stacked horizontally flat against one another (not vertically) in a single column.
• Only one domino to be picked up and stacked at a time.
• Should the tower fall over during the 30 seconds, the attempt is disqualified.
• No additional aids are permitted to be used.
• The stack must stand for 5 seconds unsupported after the 30 seconds. The attempt will be disqualified if any dominoes fall off in the 5 second time period.