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BP241 Circumference shorter than length of everything else vs. circumference longer than length of everything else.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP236 BP237 BP238 BP239 BP240  *  BP242 BP243 BP244 BP245 BP246

KEYWORD

traditional

CONCEPT length_line_or_curve (info | search)

AUTHOR

Matthew J. Howells

BP394 For each colored square only, there exists a path starting on it that covers each square of the figure exactly once vs. there is no path that starts on a colored square and covers each square of the figure exactly once.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP389 BP390 BP391 BP392 BP393  *  BP395 BP396 BP397 BP398 BP399

KEYWORD

hard, nice, solved, traditional, dithering, left-listable, right-listable

CONCEPT existence (info | search),
path (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search)

AUTHOR

Jago Collins

BP385 Nets of cubes vs. not nets of cubes.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP380 BP381 BP382 BP383 BP384  *  BP386 BP387 BP388 BP389 BP390

KEYWORD

nice, notso, left-finite, traditional

CONCEPT 3d_net (info | search)

WORLD

square_outlines_sharing_edges [smaller | same | bigger]
zoom in left (cube_net)

AUTHOR

Jago Collins

BP15 Closed shape outline vs. non-closed curve.
(edit; present; nest [left/right]; search; history)
COMMENTS

All examples in this Bongard Problem are non-self-intersecting curves.

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 218.

CROSSREFS

Adjacent-numbered pages:
BP10 BP11 BP12 BP13 BP14  *  BP16 BP17 BP18 BP19 BP20

KEYWORD

nice, unstable, world, finished, traditional, bongard

CONCEPT closed_open (info | search),
hole (info | search),
loop (info | search)

WORLD

curve_or_outline [smaller | same | bigger]
zoom in left (shape_outline) | zoom in right (curve)

AUTHOR

Mikhail M. Bongard

BP220 One cluster vs. two clusters.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP215 BP216 BP217 BP218 BP219  *  BP221 BP222 BP223 BP224 BP225

KEYWORD

traditional

CONCEPT number (info | search),
feature_cluster (info | search),
cluster_of_one (info | search),
cluster (info | search),
one (info | search),
two (info | search)

AUTHOR

Giuseppe Insana

BP1019 White space in two circles maximum vs. white space in three circles maximum.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1014 BP1015 BP1016 BP1017 BP1018  *  BP1020 BP1021 BP1022 BP1023 BP1024

KEYWORD

nice, precise, traditional

CONCEPT recursion_number (info | search),
separated_regions (info | search),
circle (info | search),
recursion (info | search),
two (info | search),
three (info | search)

WORLD

circles_cross [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP1114 Fractals contain one another vs. only one contains the other.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1109 BP1110 BP1111 BP1112 BP1113  *  BP1115 BP1116 BP1117 BP1118 BP1119

KEYWORD

perfect, infinitedetail, unorderedpair

CONCEPT fractal (info | search),
recursion (info | search),
self-reference (info | search)

AUTHOR

Aaron David Fairbanks

BP60 Some similar figures vs. no similar figures.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 233.

CROSSREFS

Adjacent-numbered pages:
BP55 BP56 BP57 BP58 BP59  *  BP61 BP62 BP63 BP64 BP65

KEYWORD

noisy, finished, traditional, bongard

CONCEPT similar_shape (info | search),
similar (info | search)

WORLD

outlines [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

BP1094 Convex hulls intersect vs. not
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1089 BP1090 BP1091 BP1092 BP1093  *  BP1095 BP1096 BP1097 BP1098 BP1099

KEYWORD

precise, perfect, unorderedpair

CONCEPT convex_hull (info | search),
overlap (info | search)

AUTHOR

Jago Collins

BP1046 More white circles than black circles vs. at least as many black circles as white circles.
(edit; present; nest [left/right]; search; history)
CROSSREFS

See the twin BP1044.

Adjacent-numbered pages:
BP1041 BP1042 BP1043 BP1044 BP1045  *  BP1047 BP1048 BP1049 BP1050 BP1051

KEYWORD

precise, allsorted, spectrum, discrete, preciseworld

CONCEPT ratio (info | search)

WORLD

outline_or_fill_circles_same_size [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

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