The On-Line Encyclopedia of Bongard Problems

Four X-like points vs. two X-like points.

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	CROSSREFS	`Adjacent-numbered pages: BP109 BP110 BP111 BP112 BP113 * BP115 BP116 BP117 BP118 BP119`
	KEYWORD	`traditional`
	CONCEPT	`x-crossing (info \| search),` `number (info \| search)`
	AUTHOR	`Douglas R. Hofstadter`

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