I have a record number of Rubik's Cubes — and I can solve one in 40 seconds
Par un écrivain mystérieux
Description
Florian Kastenmeier, of Germany, now holds the Guinness World Record for assembling the largest collection of rotating puzzles in the world — a whopping 1,519.
Lucas Etter 'solves' Rubik's Cube in five seconds - BBC News
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Solve a 3x3 Rubik's Cube In a Few Minutes
My month-long quest to solve a Rubik's Cube in under 20 seconds, by Max Deutsch
Speedcubing Champion solved 6,931 cubes in 24 hours!
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5 Ways to Become a Rubik's Cube Speed Solver - wikiHow
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par adulte (le prix varie selon la taille du groupe)