A cyclist has completed a Rubik's cube in just under 40 seconds while riding through London's Hyde Park.
Simone Santarsiero filmed himself taking on the 3D puzzle as he pedalled one-handed on a Boris bike.
The 25-year-old student from Florence, Italy, who was in the capital for a four-day break when he decided to attempt the challenge, shared the video footage on his YouTube channel.
He told the Standard: "Firstly I thought I would like to try to cycle in London, specifically Hyde Park, but then I thought I would go one step further and do it with a Rubik's cube.
"At first it was quite difficult because I realised I could not cycle without both hands, but then I realised I could do it with one.
"I really enjoyed it."
Mr Santarsiero has faced criticism over his challenge after apparently putting passers-by in danger.
One online commenter wrote: "Quite skilful, but please not on a public road!"
Another said: "He's got skills, but his bike handling was all over the shop. Just as well someone wasn't passing him when he lost his balance".
But the cyclist insisted he had not injured anyone in the stunt.
He said: "People were looking at me strange, I was worried about hitting someone but I did not injury anybody."
Others celebrated his puzzle-solving skills, with one person writing: "The guy is a legend!"
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