Left-sorted examples have the keyword "blackwhite" on the OEBP.
Right-sorted examples have the keyword "blackwhiteinvariant" on the OEBP.
All examples are visual Bongard Problems that allow black to touch the bounding box (keyword bordercontent).
Adjacent-numbered pages: BP551 BP552 BP553 BP554 BP555  *  BP557 BP558 BP559 BP560 BP561
meta (see left/right), links, keyword, invariance, wellfounded
visualbp [smaller | same | bigger]
Leo Crabbe
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, side, wellfounded, testexample
Aaron David Fairbanks