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BP270 Only vertical or horizontal lines vs. neither vertical nor horizontal lines.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP265 BP266 BP267 BP268 BP269  *  BP271 BP272 BP273 BP274 BP275

CONCEPT or (info | search),
horizontal (info | search),
vertical (info | search)

WORLD

arial_font_centered_connected_symbol [smaller | same | bigger]

AUTHOR

Merse E. Gáspár

BP1014 Shapes become thicker the farther they are from the top-left and bottom-right corners of bounding box vs. some other pattern in shape thickness based on position.
(edit; present; nest [left/right]; search; history)
REFERENCE

https://studentweb.cs.wwu.edu/~tuora/aarontuor/computerscience/bongardproblems.html

CROSSREFS

Adjacent-numbered pages:
BP1009 BP1010 BP1011 BP1012 BP1013  *  BP1015 BP1016 BP1017 BP1018 BP1019

KEYWORD

handed, leftright, updown, rotate, boundingbox, bordercontent

CONCEPT size (info | search)

AUTHOR

Aaron Tuor

BP179 Object thinner at top vs. object thicker at top.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP174 BP175 BP176 BP177 BP178  *  BP180 BP181 BP182 BP183 BP184

KEYWORD

traditional

CONCEPT size_increase_decrease (info | search),
downward_upward (info | search),
regular_irregular_change (info | search),
tracing_line_or_curve (info | search),
uppermost_lowermost (info | search)

WORLD

shape_outline [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

BP345 Intersection of circle and square vs. union of circle and square.
(edit; present; nest [left/right]; search; history)
COMMENTS

An image of only a circle or of only a square would be ambiguously categorized.

CROSSREFS

BP1272 is "Square minus circle vs. circle minus square."

Adjacent-numbered pages:
BP340 BP341 BP342 BP343 BP344  *  BP346 BP347 BP348 BP349 BP350

KEYWORD

nice, left-narrow, right-narrow, traditional, both

CONCEPT set_intersection (info | search),
set_union (info | search),
imagined_shape (info | search),
imagined_entity (info | search),
overlap (info | search)

WORLD

[smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP325 Left shapes can combine by symmetric difference (XOR logical operator) to make right shape vs. left shapes can combine by intersection (AND logical operator) to make right shape.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP320 BP321 BP322 BP323 BP324  *  BP326 BP327 BP328 BP329 BP330

KEYWORD

precise, unstable, perfect, pixelperfect, structure, orderedtriplet, traditional

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

AUTHOR

Aaron David Fairbanks

BP386 Lower shape can be used as a tile to build the upper one vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP381 BP382 BP383 BP384 BP385  *  BP387 BP388 BP389 BP390 BP391

KEYWORD

nice, precise, allsorted, left-narrow, perfect, pixelperfect, orderedpair, traditional, preciseworld, left-listable, right-listable

CONCEPT tiling (info | search)

AUTHOR

Jago Collins

BP346 Object on the right fits in pattern on the left vs. object on the right does not fit in pattern on the left.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP341 BP342 BP343 BP344 BP345  *  BP347 BP348 BP349 BP350 BP351

KEYWORD

nice, creativeexamples, structure, traditional, rules

CONCEPT categorization (info | search)

AUTHOR

Aaron David Fairbanks

BP10 Approximately triangular outline vs. approximately convex quadrilateral outline.
(edit; present; nest [left/right]; search; history)
COMMENTS

All examples in this Bongard Problem are shape outlines.

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 217.

CROSSREFS

Adjacent-numbered pages:
BP5 BP6 BP7 BP8 BP9  *  BP11 BP12 BP13 BP14 BP15

KEYWORD

easy, fuzzy, noisy, number, finished, traditional, bongard

CONCEPT number (info | search),
three (info | search),
four (info | search)

WORLD

shape_outline [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

BP1002 Vaguely self-similar (looks like self-similar fractal after one iteration) vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

See BP1004 for a Problem about conceptual self-similarity instead of visual self-similarity.

See BP188 for a similar Problem restricted to shape outlines made of shape outlines.

Adjacent-numbered pages:
BP997 BP998 BP999 BP1000 BP1001  *  BP1003 BP1004 BP1005 BP1006 BP1007

KEYWORD

easy, nice, fuzzy, abstract, anticomputer, concept, traditional

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

AUTHOR

Aaron David Fairbanks

BP275 Straight line joining the ends does not intersect the object vs. straight line joining the ends intersects the object.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP270 BP271 BP272 BP273 BP274  *  BP276 BP277 BP278 BP279 BP280

CONCEPT imagined_line_or_curve (info | search),
imagined_entity (info | search),
object_line_overlap (info | search),
overlap (info | search)

WORLD

arial_font_centered_connected_symbol [smaller | same | bigger]

AUTHOR

Merse E. Gáspár

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