The On-Line Encyclopedia of Bongard Problems

Black region narrows at the boundary of black/white vs. black region widens at the boundary of black/white.

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	CROSSREFS	`Adjacent-numbered pages: BP175 BP176 BP177 BP178 BP179 * BP181 BP182 BP183 BP184 BP185`
	KEYWORD	`nice, dual, traditional`
	CONCEPT	`size_increase_decrease (info \| search),` `outlined_filled (info \| search),` `tracing_line_or_curve (info \| search),` `texture (info \| search)`
	AUTHOR	`Harry E. Foundalis`

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