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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.
Adjacent-numbered pages: BP496 BP497 BP498 BP499 BP500  *  BP502 BP503 BP504 BP505 BP506
spectrum, subjective, meta (see left/right), links, keyword, sideless
bp [smaller | same | bigger]
Aaron David Fairbanks
Left examples have the keyword "solved" on the OEBP.
Right examples have the keyword "challenge" on the OEBP.
Adjacent-numbered pages: BP821 BP822 BP823 BP824 BP825  *  BP827 BP828 BP829 BP830 BP831
meta (see left/right), links, keyword, time
Adjacent-numbered pages: BP1172 BP1173 BP1174 BP1175 BP1176  *  BP1178 BP1179 BP1180 BP1181 BP1182
meta (see left/right), links
Leo Crabbe