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On the 21st April at the London Marathon George Scholey will be attempting the Guinness World Record for ‘The Most Rubik’s Cubes Solved While Running a Marathon’.

The number to beat is 420 by Kei Suga, and what better place to beat it than London.

But, what's his strategy? And how difficult is it to solve the cube while running? George has been speaking to ´óÏó´«Ã½ Radio London's Dan Simpson about the attempt.