The On-Line Encyclopedia of Bongard Problems

Bongard Problem with solution relating to concept: ghost figure vs. Bongard Problem unrelated to this concept.

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	CROSSREFS	`Adjacent-numbered pages: BP635 BP636 BP637 BP638 BP639 * BP641 BP642 BP643 BP644 BP645`
	KEYWORD	`meta (see left/right), links, metaconcept`
	CONCEPT	`This MBP is about BPs that feature concept: "ghost"`
	WORLD	`bp [smaller \| same \| bigger]`
	AUTHOR	`Harry E. Foundalis`

		Hints
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