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BP189 All clusters are made of objects of the same texture vs. not all clusters are made of objects of the same texture.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP184 BP185 BP186 BP187 BP188  *  BP190 BP191 BP192 BP193 BP194

KEYWORD

traditional

CONCEPT all (info | search),
outlined_filled (info | search),
feature_cluster (info | search),
cluster (info | search),
same_feature (info | search),
same (info | search),
texture (info | search)

AUTHOR

Harry E. Foundalis

BP101 Parallel dents vs. perpendicular dents.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP96 BP97 BP98 BP99 BP100  *  BP102 BP103 BP104 BP105 BP106

KEYWORD

traditional

CONCEPT indentation (info | search),
imagined_shape (info | search),
imagined_entity (info | search),
parallel (info | search),
perpendicular (info | search)

AUTHOR

Douglas R. Hofstadter

BP1101 Each node is connected to the same number of nodes by straight lines vs. not so.
(edit; present; nest [left/right]; search; history)
REFERENCE

https://en.wikipedia.org/wiki/Regular_graph

CROSSREFS

Any left example of BP1099 will be a left example for this BP.

Adjacent-numbered pages:
BP1096 BP1097 BP1098 BP1099 BP1100  *  BP1102 BP1103 BP1104 BP1105 BP1106

KEYWORD

precise, allsorted, preciseworld

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

WORLD

graph [smaller | same | bigger]
zoom in left

AUTHOR

Leo Crabbe

BP1 Empty image vs. non-empty image.
(edit; present; nest [left/right]; search; history)
COMMENTS

The first Bongard Problem.

All examples in this Bongard Problem are line drawings (one or more connected figures made up of curved and non-curved lines).

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 214.

CROSSREFS

Adjacent-numbered pages:
  *  BP2 BP3 BP4 BP5 BP6

EXAMPLE

A circle fits on the right because it is not nothing.

KEYWORD

easy, nice, precise, allsorted, unstable, world, left-narrow, left-finite, left-full, left-null, perfect, pixelperfect, finished, traditional, stableworld, deformstable, bongard

CONCEPT empty (info | search),
existence (info | search),
zero (info | search)

WORLD

zoom in left (blank_image) | zoom in right (curves_drawing)

AUTHOR

Mikhail M. Bongard

BP1268 Palindromic when elements are grouped into (more than one) equal-sized blocks vs. no grouping of elements into (more than one) equal-sized blocks is palindromic.
(edit; present; nest [left/right]; search; history)
COMMENTS

Any palindrome would be sorted left, except strings of length zero or one.

CROSSREFS

Adjacent-numbered pages:
BP1263 BP1264 BP1265 BP1266 BP1267  *  BP1269 BP1270 BP1271 BP1272 BP1273

KEYWORD

precise, allsorted, unwordable, notso, sequence, traditional, miniworlds

CONCEPT element_wise_symmetry (info | search),
element_grouping (info | search),
sequence (info | search),
same_shape (info | search),
same (info | search)

WORLD

[smaller | same | bigger]
zoom in left | zoom in right

AUTHOR

Leo Crabbe

BP351 Discrete quantity vs. continuous quantity.
(edit; present; nest [left/right]; search; history)
CROSSREFS

See BP873 for the version with Bongard Problems.

Adjacent-numbered pages:
BP346 BP347 BP348 BP349 BP350  *  BP352 BP353 BP354 BP355 BP356

KEYWORD

creativeexamples, structure, sequence, traditional, rules

CONCEPT size_increase_decrease (info | search),
discrete_continuous (info | search),
iteration (info | search),
tracing_line_or_curve (info | search)

WORLD

constant_change_seq_increase_right [smaller | same | bigger]
zoom in left (constant_change_discrete_seq_increase_right)

AUTHOR

Aaron David Fairbanks

BP323 Jigsaw puzzle pieces can be assembled into a square vs. jigsaw puzzle pieces cannot be assembled into a square.
(edit; present; nest [left/right]; search; history)
COMMENTS

Although it takes time to check each individual example, the right answer is likely the first thing a person would think of upon seeing this.

CROSSREFS

Adjacent-numbered pages:
BP318 BP319 BP320 BP321 BP322  *  BP324 BP325 BP326 BP327 BP328

KEYWORD

notso, hardsort

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

AUTHOR

Aaron David Fairbanks

BP21 Small shape present vs. all shapes large.
(edit; present; nest [left/right]; search; history)
COMMENTS

All examples in this problem include three or fewer outlines of circles and (non-skinny) triangles.

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 220.

CROSSREFS

Adjacent-numbered pages:
BP16 BP17 BP18 BP19 BP20  *  BP22 BP23 BP24 BP25 BP26

KEYWORD

finished, traditional, bongard

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

WORLD

circle_triangle_outlines [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

BP551 Unstable balance vs. not
(edit; present; nest [left/right]; search; history)
REFERENCE

https://en.wikipedia.org/wiki/Stability_theory

CROSSREFS

Adjacent-numbered pages:
BP546 BP547 BP548 BP549 BP550  *  BP552 BP553 BP554 BP555 BP556

EXAMPLE

The classic example is a pendulum with a solid rod (instead of a string) which has a stable balance point at the bottom of its swing, where if you move the pendulum slightly it will swing back towards that balanced state. However, theoretically the pendulum can also be balanced pointing directly up. In this case, if you move the pendulum slightly it will swing down away from that upwards balanced state.

KEYWORD

updown, rotate, physics, anticomputer, perfect

CONCEPT tumbles_or_stays_put (info | search),
gravity (info | search)

AUTHOR

Jago Collins

BP54 A cross, circle, and triangle arranged counterclockwise vs. a cross, circle, and triangle arranged clockwise.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 231.

CROSSREFS

Adjacent-numbered pages:
BP49 BP50 BP51 BP52 BP53  *  BP55 BP56 BP57 BP58 BP59

KEYWORD

dual, handed, finished, orderedtriplet, traditional, bongard

CONCEPT turn_orientation (info | search),
rotational_direction (info | search),
triangle (info | search),
direction (info | search)

AUTHOR

Mikhail M. Bongard

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