Right examples have the keyword "number" on the OEBP. The solution must only depend on counting the number of something: no comparison between numbers of different things.

When a "number" Bongard Problem sorts numbers unambiguously (keyword precise), the left side and the right side define disjoint sets of numbers. When a "number" Bongard Problem sorts all numbers (keyword allsorted), the subsets are complements of one another.

Many but not all right examples require nontrivial mathematical knowledge to solve (keyword math).

BP200 is a version of this with sides flipped, sorting pictures of Bongard Problems (miniproblems) instead of links to pages on the OEBP, and with emphasis on feature-based solutions as an alternative to number-based solutions.

Adjacent-numbered pages:
BP570 BP571 BP572 BP573 BP574  *  BP576 BP577 BP578 BP579 BP580

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

bp [smaller | same | bigger]

Aaron David Fairbanks

Every example is an image of a Bongard Problem, without bounding boxes around examples, with three examples on either side.

BP575 is similar.

Adjacent-numbered pages:
BP195 BP196 BP197 BP198 BP199  *  BP201 BP202 BP203 BP204 BP205

nice, meta (see left/right), miniproblems, creativeexamples, assumesfamiliarity, structure, experimental, presentationinvariant

no_box_bpimage_three_drawings_per_side [smaller | same | bigger]

Harry E. Foundalis