The On-Line Encyclopedia of Bongard Problems

All turns are in one direction and rectangular loop exists vs. turns in different directions and no rectangular loop exists.

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	CROSSREFS	`Adjacent-numbered pages: BP115 BP116 BP117 BP118 BP119 * BP121 BP122 BP123 BP124 BP125`
	KEYWORD	`traditional`
	CONCEPT	`all (info \| search),` `turn_orientation (info \| search),` `tracing_line_or_curve (info \| search),` `turning_direction (info \| search)`
	AUTHOR	`Douglas R. Hofstadter`

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