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BP501 Easy Bongard Problems vs. hard Bongard Problems.
BP1
BP2
BP3
BP4
BP5
BP6
BP7
BP8
BP9
BP10
BP23
BP31
BP97
BP98
BP100
BP194
BP196
BP211
BP363
BP374
BP812
BP839
BP882
BP911
BP956
BP1002
BP1015
BP1017
BP1022
BP1087
BP1095
BP1104
BP1105
BP1255
BP1260
BP112
BP162
BP344
BP383
BP394
BP559
BP564
BP793
BP795
BP796
BP801
BP825
BP831
BP842
BP849
BP860
BP871
BP872
BP875
BP876
BP877
BP878
BP898
BP899
BP927
BP934
BP944
BP954
BP965
BP998
BP1011
BP1038
BP1040
BP1055
BP1123

. . .

(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted Bongard Problems have the keyword "easy" on the OEBP.

Right-sorted Bongard Problems have the keyword "hard" on the OEBP.


"Easy" means easy for human beings to solve, not computers.

CROSSREFS

Adjacent-numbered pages:
BP496 BP497 BP498 BP499 BP500  *  BP502 BP503 BP504 BP505 BP506

KEYWORD

spectrum, subjective, meta (see left/right), links, keyword, sideless

WORLD

bp [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP503 "Nice" Bongard Problems vs. Bongard Problems the OEBP does not need more like.
BP1
BP2
BP3
BP4
BP5
BP6
BP7
BP8
BP9
BP11
BP12
BP15
BP16
BP20
BP23
BP30
BP32
BP33
BP50
BP51
BP57
BP59
BP62
BP70
BP71
BP72
BP74
BP76
BP77
BP85
BP97
BP98
BP100
BP106
BP108

. . .

BP213
BP214
BP221
BP231
BP237
BP262
BP538
BP545
BP548
BP555
BP570
BP801
BP862
BP882
BP915
BP920
BP941
BP1000
BP1008
BP1042
BP1043
BP1129
BP1150
(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted Bongard Problems have the keyword "nice" on the OEBP.

Right-sorted Bongard Problems have the keyword "less." They are not necessarily "bad," but we do not want more like them.

CROSSREFS

Adjacent-numbered pages:
BP498 BP499 BP500 BP501 BP502  *  BP504 BP505 BP506 BP507 BP508

KEYWORD

subjective, meta (see left/right), links, keyword, oebp, right-finite, left-it, feedback, time

WORLD

bp [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP534 Bongard Problems such that potential left examples can intuitively be put in bijection with potential right examples vs. other Bongard Problems.
BP7
BP8
BP19
BP36
BP43
BP45
BP54
BP55
BP63
BP64
BP67
BP95
BP106
BP109
BP157
BP158
BP180
BP196
BP197
BP211
BP234
BP278
BP279
BP286
BP313
BP337
BP357
BP363
BP372
BP513
BP514
BP515
BP516
BP517
BP793

. . .

(edit; present; nest [left/right]; search; history)
COMMENTS

This is the keyword "dual" on the OEBP.

Given an example there is some way to "flip sides" by altering it. The left-to-right and right-to-left transformations should be inverses.


It is not required that there only be one such transformation. For example, for many handed Bongard Problem, flipping an example over any axis will reliably switch its sorting.


It is not required that every left example must have its corresponding right example uploaded on the OEBP nor vice versa. See the keyword contributepairs for the BPs the OEBP advises users upload left and right examples for in pairs.

CROSSREFS

Adjacent-numbered pages:
BP529 BP530 BP531 BP532 BP533  *  BP535 BP536 BP537 BP538 BP539

KEYWORD

meta (see left/right), links, keyword, sideless

WORLD

bp [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP535 Visual Bongard Problems such that flipping over the vertical axis (left/right) can switch an example's side vs. visual Bongard Problems whose examples' sorting doesn't change under such a transformation.
BP8
BP43
BP67
BP109
BP207
BP234
BP278
BP279
BP313
BP337
BP357
BP363
BP372
BP793
BP795
BP796
BP805
BP830
BP881
BP931
BP955
BP961
BP971
BP1008
BP1014
BP1024
BP1025
BP1027
BP1028
BP1029
BP1030
BP1031
BP1032
BP1033
BP1034

. . .

BP199
BP839
BP896
BP972
BP986
BP1122
(edit; present; nest [left/right]; search; history)
COMMENTS

Left examples have the keyword "leftright" on the OEBP.

CROSSREFS

See updown.

All "leftright" Bongard Problems are handed.

Adjacent-numbered pages:
BP530 BP531 BP532 BP533 BP534  *  BP536 BP537 BP538 BP539 BP540

KEYWORD

meta (see left/right), links, keyword, sideless, invariance

WORLD

handed_visualbp [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP552 Orientation-dependent Bongard Problems vs. orientation-independent visual Bongard Problems.
BP7
BP8
BP16
BP36
BP43
BP54
BP55
BP63
BP67
BP106
BP109
BP199
BP207
BP234
BP278
BP279
BP286
BP313
BP337
BP363
BP372
BP793
BP795
BP796
BP805
BP830
BP881
BP896
BP931
BP955
BP961
BP971
BP972
BP1008
BP1014

. . .

BP1
BP2
BP3
BP4
BP5
BP6
BP986
BP1197
BP1199
BP1200
(edit; present; nest [left/right]; search; history)
COMMENTS

Left examples have the keyword "handed" on the OEBP.


If mirroring any example along the any axis can change its sorting the BP is "handed."


Note that BPs about comparing orientation between multiple things in one example fit on the right side.

CROSSREFS

See BP871 for the version with pictures of Bongard Problems (miniproblems) instead of links to pages on the OEBP.


The keyword leftright is specifically about flipping over the vertical axis, while the keyword updown is specifically about flipping over the horizontal axis.


Bongard Problems tagged rotate are usually "handed", since any rotation can be created by two reflections. Not necessarily, however, since the reflected step in between might not be sorted on either side by the Bongard Problem.

Adjacent-numbered pages:
BP547 BP548 BP549 BP550 BP551  *  BP553 BP554 BP555 BP556 BP557

KEYWORD

meta (see left/right), links, keyword, invariance, wellfounded

WORLD

visualbp [smaller | same | bigger]
zoom in left (handed_visualbp)

AUTHOR

Aaron David Fairbanks

BP586 Bongard Problem with solution relating to concept: arrow vs. Bongard Problem unrelated to this concept.
BP52
BP102
BP118
BP358
BP363
BP1256
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP581 BP582 BP583 BP584 BP585  *  BP587 BP588 BP589 BP590 BP591

KEYWORD

meta (see left/right), links, metaconcept

CONCEPT This MBP is about BPs that feature concept: "arrow"

WORLD

bp [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

BP601 Bongard Problem with solution relating to concept: clockwise / counterclockwise turn vs. Bongard Problem unrelated to this concept.
BP16
BP54
BP120
BP208
BP226
BP259
BP313
BP336
BP363
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP596 BP597 BP598 BP599 BP600  *  BP602 BP603 BP604 BP605 BP606

KEYWORD

meta (see left/right), links, metaconcept

CONCEPT This MBP is about BPs that feature concept: "turn_orientation"

WORLD

bp [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

BP708 Bongard Problem with solution relating to concept: tracing along a line or curve vs. Bongard Problem unrelated to this concept.
BP16
BP43
BP52
BP55
BP67
BP68
BP69
BP70
BP72
BP74
BP102
BP105
BP115
BP120
BP179
BP180
BP198
BP208
BP278
BP336
BP340
BP341
BP350
BP351
BP352
BP353
BP354
BP355
BP356
BP357
BP363
BP365
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP703 BP704 BP705 BP706 BP707  *  BP709 BP710 BP711 BP712 BP713

KEYWORD

meta (see left/right), links, metaconcept, primitive

CONCEPT This MBP is about BPs that feature concept: "tracing_line_or_curve"

WORLD

bp [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

BP1009 Visual Bongard Problems such that flipping over horizontal axis (up/down) can switch an example's side vs. visual Bongard Problems whose examples' sorting does not change under such a transformation.
BP36
BP199
BP286
BP313
BP337
BP363
BP551
BP896
BP972
BP1008
BP1014
BP1161
BP1213
BP1215
BP1216
BP1217
BP1218
BP1122
(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted Bongard Problems have the keyword "updown" on the OEBP.

CROSSREFS

See leftright.

All "updown" Problems are handed.

Adjacent-numbered pages:
BP1004 BP1005 BP1006 BP1007 BP1008  *  BP1010 BP1011 BP1012 BP1013 BP1014

KEYWORD

meta (see left/right), links, keyword, invariance

WORLD

handed_visualbp [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP1194 Bongard Problems listed in Harry E. Foundalis's collection vs. not.
BP1
BP2
BP3
BP4
BP5
BP6
BP7
BP8
BP9
BP10
BP11
BP12
BP13
BP14
BP15
BP16
BP17
BP18
BP19
BP20
BP21
BP22
BP23
BP24
BP25
BP26
BP27
BP28
BP29
BP30
BP31
BP32
BP33
BP34
BP35

. . .

BP501
BP503
BP504
BP505
BP506
BP507
BP508
BP509
BP510
BP1194
(edit; present; nest [left/right]; search; history)
COMMENTS

Alternatively, BP pages on the OEBP with number less than or equal to 394 vs. other BP pages.

REFERENCE

https://www.foundalis.com/res/bps/bpidx.htm

CROSSREFS

Adjacent-numbered pages:
BP1189 BP1190 BP1191 BP1192 BP1193  *  BP1195 BP1196 BP1197 BP1198 BP1199

EXAMPLE

Foundalis's collection includes all Bongard Problems by Bongard.

KEYWORD

meta (see left/right), links, right-self, time

AUTHOR

Aaron David Fairbanks

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