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BP24 A circle vs. no circle.
(edit; present; nest [left/right]; search; history)
COMMENTS

All small squares appearing in this problem are axis-aligned.

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 221.

CROSSREFS

Adjacent-numbered pages:
BP19 BP20 BP21 BP22 BP23  *  BP25 BP26 BP27 BP28 BP29

KEYWORD

finished, traditional, bongard

CONCEPT circle (info | search),
existence (info | search)

WORLD

circle_square_eq-tri_small_outlines [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

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