The On-Line Encyclopedia of Bongard Problems

Low contrast (no fully black region) vs. high contrast (at least one fully black region).

(edit; present; nest [left/right]; search; history)

	CROSSREFS	`Adjacent-numbered pages: BP220 BP221 BP222 BP223 BP224 * BP226 BP227 BP228 BP229 BP230`
	KEYWORD	`nice, traditional, dithering`
	CONCEPT	`contrast (info \| search)`
	AUTHOR	`Giuseppe Insana`

		Hints
(Greetings from The On-Line Encyclopedia of Bongard Problems!)