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BP849 Loop is time-symmetrical (loop is like ABCBABCBA... instead of like ABCABCABC...) up to rotation of object vs. not so (neither up to rotation nor reflection).
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CROSSREFS

Adjacent-numbered pages:
BP844 BP845 BP846 BP847 BP848  *  BP850 BP851 BP852 BP853 BP854

KEYWORD

hard, convoluted, solved, rules

WORLD

constant_change_seq_loop_right [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

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