Vingt mouvements max pour résoudre un Rubik’s cube

Vingt mouvements max pour résoudre un Rubik’s cube
12 août 2010

Quelle que soit la position de départ parmi les 43'252'003'274'489'856'000 existantes, les six faces d’un cube peuvent être unifiées en vingt mouvements ou moins. Ce chiffre – appelé nombre de Dieu – tenait en haleine les mathématiciens amateurs théorie des groupes depuis trente ans et vient d'être établi avec certitude. C’est le temps qu’il a fallu pour élaborer les algorithmes nécessaires aux calculs et disposer d’ordinateurs assez puissants pour les résoudre, sachant que la première estimation datait de 1981 et était de 52. Dorénavant, vous n’aurez plus d’excuse !


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