BBC Sport - Ronnie O'Sullivan: Steve Davis's iWonder guide to the 147 break

Can anyone beat the 'perfect' 147?

The 147 - the perfect break. But will anyone ever be able to beat Ronnie O'Sullivan's maximum in five minutes and 20 seconds at the 1997 World Championship?

Steve Davis investigates the numbers behind The Rocket's amazing achievement in our iWonder guide.

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