Guinness World Records Challengers

Challenge Rules

The most dominoes toppled in one minute is 75 and was achieved by Gemma Hansen (UK) at Butlins, Minehead, UK, on 7 August 2010.

Challenge rules:

• You must use standard, commercially available dominoes of minimum dimensions 39 x 19 x 7 mm (1 9/16 x 3/4 x 1/4 in.).
• Any number of dominoes may be laid out outside the "stacking area" in any fashion prior to your attempt.
• You must stack the dominoes (stand them up on their ends) in any formation within the "stacking area" during your attempt.
• The "stacking area" must be no larger than 29.7 × 42 cm (11.7 × 16.5 in - the same size as a sheet of A3 paper) and must be clearly marked out on the stacking surface.
• You may only use one hand to stack the dominoes, other hand must remain behind your back at all times.
• You must stop stacking after one minute. Then, you have one attempt to topple the dominoes by pushing them with one finger.
• Your final score is the number of dominoes successfully toppled, not stacked.