Étoile d'Alexandre Permutations | Voir aussi | Menu de navigationmodifierm

Casse-tête mécanique articulé


projets correspondantsConsultez la documentation du modèlecasse-têtegéométriquetrois dimensionsUSRubik's CubedodécaédriqueMegaminx





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.mw-parser-output .entete.jeubackground-image:url("//upload.wikimedia.org/wikipedia/commons/9/90/Picto_infobox_Game.png")
Étoile d'Alexandre
casse-tête



Description de l'image Alexander's Star.jpg.









Auteur

Adam Alexander
Date de 1re édition

1982
Joueur(s)

1





habileté
physique
 Non
  réflexion
décision
 Oui
 générateur
de hasard
 Non
 info. compl.
et parfaite
 Oui

modifier Consultez la documentation du modèle



L'Étoile d'Alexandre est un casse-tête géométrique à trois dimensions inventé par le mathématicien américain Adam Alexander en 1982. Elle a été brevetée le 26 mars 1985 (brevet US 4,506,891).


L'Étoile d'Alexandre s'apparente au Rubik's Cube mais est dodécaédrique. Elle est constituée de 30 pièces mobiles et est équivalente aux arêtes du Megaminx. Il est donc possible d'y jouer sur un Megaminx en ignorant les sommets et les centres.



Permutations |


Le nombre de positions différentes pour une Étoile d'Alexandre est de :


30!×215120≈7,24×1034displaystyle frac 30!times 2^15120approx 7,24times 10^34


Cela fait exactement 72 431 714 252 715 638 411 621 302 272 000 000 positions différentes.



Voir aussi |


  • Grand dodécaèdre
























  • Portail des jeux Portail des jeux

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