Left-sorted BPs have the keyword "left-null" on the OEBP.

Right-sorted BPs have the keyword "right-null" on the OEBP.

See BP796 for the version with pictures of Bongard Problems (miniproblems) instead of links to pages on the OEBP.

See BP1160 for the version about an all-black panel instead of all-white.

Adjacent-numbered pages:
BP562 BP563 BP564 BP565 BP566  *  BP568 BP569 BP570 BP571 BP572

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

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Aaron David Fairbanks

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

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

In a "stableworld" Bongard Problem, no small change should outright make an example outright no longer fit in with the others in the Bongard Problem. It is allowed for a small change to make an example slightly less like all the others.

The meaning of "stableworld" is close to "examples have no particular format at all", but not quite the same.

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

See BP1144, which is about ALL small changes to ALL examples making them unsortable.

Adjacent-numbered pages:
BP1198 BP1199 BP1200 BP1201 BP1202  *  BP1204 BP1205 BP1206 BP1207 BP1208

meta (see left/right), links, keyword

Aaron David Fairbanks