Left-sorted Bongard Problems have the keyword "side" on the OEBP.
Right-sorted Bongard Problems have the keyword "sideless" on the OEBP.
Here "flipping the sides" of a Bongard Problem does not flip the sides of the example BPs.
Metaconcept implies "sideless".
Adjacent-numbered pages: BP534 BP535 BP536 BP537 BP538 * BP540 BP541 BP542 BP543 BP544
meta (see left/right), links, keyword, right-self, sideless, invariance, metameta, left-it, feedback
Aaron David Fairbanks
. . .
Alternatively, BP pages on the OEBP with number less than or equal to 394 vs. other BP pages.
https://www.foundalis.com/res/bps/bpidx.htm
Adjacent-numbered pages: BP1189 BP1190 BP1191 BP1192 BP1193 * BP1195 BP1196 BP1197 BP1198 BP1199
Foundalis's collection includes all Bongard Problems by Bongard.
meta (see left/right), links, right-self, time
