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BP959 This image of this Bongard Problem vs. empty image.
(edit; present; nest [left/right]; search; history)
CROSSREFS

See BP953, BP902.

Adjacent-numbered pages:
BP954 BP955 BP956 BP957 BP958  *  BP960 BP961 BP962 BP963 BP964

KEYWORD

less, meta (see left/right), miniproblems, left-finite, right-finite, left-full, right-full, right-null, perfect, infinitedetail, finished, experimental, funny

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

WORLD

zoom in left | zoom in right (blank_image)

AUTHOR

Aaron David Fairbanks, Leo Crabbe

BP1211 Triangle vs. anything else.
(edit; present; nest [left/right]; search; history)
CROSSREFS

See BP6 for "triangle vs. quadrilateral".

Adjacent-numbered pages:
BP1206 BP1207 BP1208 BP1209 BP1210  *  BP1212 BP1213 BP1214 BP1215 BP1216

KEYWORD

stub, notso, left-narrow, traditional

CONCEPT triangle (info | search)

AUTHOR

Aaron David Fairbanks

BP130 Closed region is made of curves if flaws are ignored vs. closed region is a polygon if flaws are ignored.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP125 BP126 BP127 BP128 BP129  *  BP131 BP132 BP133 BP134 BP135

KEYWORD

noisy, traditional

CONCEPT curved_straight (info | search),
imperfection_small (info | search)

AUTHOR

Douglas R. Hofstadter

BP201 Two of the shapes make tiles along their border lines vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP196 BP197 BP198 BP199 BP200  *  BP202 BP203 BP204 BP205 BP206

KEYWORD

noisy, traditional

CONCEPT rotation_required (info | search),
tiling (info | search),
imagined_motion (info | search),
motion (info | search)

WORLD

fill_shapes [smaller | same | bigger]

AUTHOR

Giuseppe Insana

BP244 Scanning left-to-right, top-to-bottom, each filled box is separated from the next filled box by the same number of empty boxes vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP239 BP240 BP241 BP242 BP243  *  BP245 BP246 BP247 BP248 BP249

KEYWORD

left-finite, right-finite, traditional

CONCEPT all (info | search),
subtraction (info | search),
outlined_filled (info | search),
wrapping_around_bounding_box (info | search),
same_number (info | search),
same (info | search),
texture (info | search)

AUTHOR

Matthew J. Howells

BP55 A circle is at the left of the cavity if you look from inside the figure vs. a circle is at the right of the cavity if you look from inside the figure.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 232.

CROSSREFS

Adjacent-numbered pages:
BP50 BP51 BP52 BP53 BP54  *  BP56 BP57 BP58 BP59 BP60

KEYWORD

dual, handed, finished, traditional, bongard

CONCEPT indentation (info | search),
on_line_or_curve (info | search),
separation_of_joined_objects (info | search),
tracing_line_or_curve (info | search),
rotational_direction (info | search),
direction (info | search)

AUTHOR

Mikhail M. Bongard

BP576 Vertices may be partitioned into two sets such that no two vertices in the same set are connected versus not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

Left examples are called "bipartite graphs."

CROSSREFS

Adjacent-numbered pages:
BP571 BP572 BP573 BP574 BP575  *  BP577 BP578 BP579 BP580 BP581

KEYWORD

precise, allsorted, notso, math, traditional, preciseworld

CONCEPT graph (info | search),
distinguishing_crossing_curves (info | search)

WORLD

graph [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP105 Ends of line point to the same direction vs. ends of line do not point to the same direction.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP100 BP101 BP102 BP103 BP104  *  BP106 BP107 BP108 BP109 BP110

KEYWORD

noisy, traditional

CONCEPT slope_at_endpoint (info | search),
tracing_line_or_curve (info | search)

AUTHOR

Douglas R. Hofstadter

BP1279 Circled points are all possible vertices a square with a particular side length can take, provided that each of its corners lie on a grid point vs. not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

Rotation of the square is allowed.

CROSSREFS

See BP1280 for version with hexagons on a hexagonal grid.

Adjacent-numbered pages:
BP1274 BP1275 BP1276 BP1277 BP1278  *  BP1280 BP1281 BP1282 BP1283 BP1284

KEYWORD

hard, precise, allsorted, unwordable, hardsort, left-finite, right-finite, left-full, fixedgrid, preciseworld

CONCEPT square (info | search)

AUTHOR

Leo Crabbe

BP194 Background is a parallelogram vs. background is a triangle.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP189 BP190 BP191 BP192 BP193  *  BP195 BP196 BP197 BP198 BP199

KEYWORD

easy, nice, noisy, traditional

CONCEPT shape_background (info | search),
number (info | search),
imagined_shape (info | search),
imagined_entity (info | search),
triangle (info | search)

AUTHOR

Harry E. Foundalis

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