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BP1142 Bongard Problems where there is no way to turn an example into any other sorted example by adding black OR white (not both) vs. Bongard Problems where some example can be altered in this way and remain sorted.
BP285
BP304
BP328
BP329
BP342
BP801
BP934
BP1017
BP1056
BP1104
BP1145
BP1155
BP1156
BP859
BP962
(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted problems have the keyword "finishedexamples" on the OEBP.


The addition does not have to be slight.


Left-sorted Problems usually have a very specific collection of examples, where the only images sorted all show the same type of object.


Any Bongard Problem where all examples are one shape outline will be sorted left, and (almost) any Bongard Problem where all examples are one fill shape will be sorted right.

CROSSREFS

See BP1144 for the version about both additions and erasures, and only slight changes are considered.


See BP1167 for a stricter version, the condition that all examples have the same amount of black and white.

Adjacent-numbered pages:
BP1137 BP1138 BP1139 BP1140 BP1141  *  BP1143 BP1144 BP1145 BP1146 BP1147

KEYWORD

unwordable, notso, meta (see left/right), links, keyword, sideless, problemkiller

AUTHOR

Leo Crabbe

BP1144 Bongard Problems where making any small change to any sorted example renders the example unsortable vs. other Bongard Problems.
BP859
BP962
BP1104
(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted Problems usually have a very specific collection of examples, where the only images sorted all show the same type of object.

CROSSREFS

See unstable vs. stable, which is about examples switching sides upon small changes instead of being rendered unsortable.

See unstableworld vs. stableworld, which is about SOME small change to SOME example making it no longer fit in.

See BP1142 for the version only about additions of detail (no erasures), and with no restriction on them being slight additions.

Adjacent-numbered pages:
BP1139 BP1140 BP1141 BP1142 BP1143  *  BP1145 BP1146 BP1147 BP1148 BP1149

KEYWORD

meta (see left/right), links, problemkiller

AUTHOR

Aaron David Fairbanks

BP1164 Visual Bongard Problems where stretching (or compressing) any sorted example renders the example unsortable vs. visual Bongard Problems where some example can be stretched along some axis and remain sorted.
BP834
BP1062
BP1097
BP1105
BP1138
BP1155
BP95
BP1145
(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted Problems often have a specific format or deal with specific geometric shapes.


Almost any Problem that sorts the all-white or all-black panels will be sorted right.

CROSSREFS

Adjacent-numbered pages:
BP1159 BP1160 BP1161 BP1162 BP1163  *  BP1165 BP1166 BP1167 BP1168 BP1169

KEYWORD

notso, meta (see left/right), links, problemkiller

WORLD

visualbp [smaller | same | bigger]

AUTHOR

Leo Crabbe

BP1169 Visual Bongard Problems where flipping over the horizontal axis (up/down) renders any example unsortable vs. visual Bongard Problems where some example can be flipped over the horizontal axis and remain sorted.
BP1157
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1164 BP1165 BP1166 BP1167 BP1168  *  BP1170 BP1171 BP1172 BP1173 BP1174

KEYWORD

notso, meta (see left/right), links, problemkiller

AUTHOR

Leo Crabbe

BP1171 Visual Bongard Problems where switching black and white in any sorted example renders the example unsortable vs. visual Bongard Problems where some example can have its colours inverted and remain sorted.
BP5
BP962
(edit; present; nest [left/right]; search; history)
COMMENTS

Most visual BPs will be sorted left by this problem, as examples usually have white backgrounds by default.

CROSSREFS

Adjacent-numbered pages:
BP1166 BP1167 BP1168 BP1169 BP1170  *  BP1172 BP1173 BP1174 BP1175 BP1176

KEYWORD

meta (see left/right), links, sideless, right-narrow, problemkiller

AUTHOR

Leo Crabbe

BP1172 Visual Bongard Problems where flipping over the vertical axis (left/right) renders any example unsortable vs. visual Bongard Problems where some example can be flipped over the vertical axis and remain sorted.
BP346
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1167 BP1168 BP1169 BP1170 BP1171  *  BP1173 BP1174 BP1175 BP1176 BP1177

KEYWORD

notso, meta (see left/right), links, problemkiller

AUTHOR

Leo Crabbe

BP1173 Visual Bongard Problems where extending the bounding box of any example in any direction (in white space) renders it unsortable vs. visual Bongard Problems where some example can remain sorted under this transformation.
BP1095
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1168 BP1169 BP1170 BP1171 BP1172  *  BP1174 BP1175 BP1176 BP1177 BP1178

KEYWORD

notso, meta (see left/right), links, problemkiller

AUTHOR

Leo Crabbe

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