An easy game:       Only paper and pencil needed. A game for one player.
And an open game:  Will you improve one of the current world records???

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x     x
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x x x x     x x x x
x                 x
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x x x x     x x x x
x     x
x     x
x x x x

Un jeu simple :                 Papier et crayon suffisent. Et on y joue seul.
Et un jeu ouvert :   Battrez-vous un des records mondiaux actuels ???

2012: the year of new records?  Numerous things to improve!

Who will improve the main world records (beating the record holders):      >178? (C. Rosin),    >82? (C. Rosin),    >216? (M. Bertin)

Or others:     >187? (M. Lapierre),    >102? (P. Bartsch),    not infinite? (L. Morgenstern),     <705? (E. Demaine et al.),    >317? (C. Boyer)
<141? (E. Demaine et al.) or <138? (P. Karjalainen),    >24? (*) (M. Quist),    >22? (M. Quist),     <23? (C. Boyer),    not infinite? (C. Boyer)
smaller initial pattern? (M. Criton)                                                                     Or origin:   <1974? (P. Berloquin),    <1962? (D. Goffinet)

(*) The number of distinct possible 5D grids at 24 moves, computed by Michael Quist in December 2011, will be announced in the next update.
(**) Pour les internautes francophones : les mêmes pages existent en version française, accessibles en cliquant sur "Français" dans le menu gauche.

© Christian Boyer, 2008-2012