article_snippet: To tackle the riddle that has stumped avid-gamers for years, Oliver practices extensively to hone Oliver memory skills.
article_snippet: Oliver added: 'The techniques for memorizing something like a Rubik's Cube or even other things like packs of cards or numbers have stayed the same for thousands of years. '
article_snippet: Oliver said the techniques for memorizing something like a Rubik's Cube have remained unchanged for thousands of years .