The On-Line Encyclopedia of Bongard Problems

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A line separates the crosses in half vs. a line does not separate the crosses in half.

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	REFERENCE	`M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 234.`
	CROSSREFS	`Adjacent-numbered pages: BP56 BP57 BP58 BP59 BP60 * BP62 BP63 BP64 BP65 BP66`
	KEYWORD	`finished, traditional, bongard`
	CONCEPT	`sides_of_line (info \| search),` `shape_cluster (info \| search),` `cluster (info \| search),` `same_number (info \| search),` `same (info \| search)`
	AUTHOR	`Mikhail M. Bongard`

Same objects inside and outside the large shape vs. not same objects inside and outside the large shape.

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	CROSSREFS	`Adjacent-numbered pages: BP123 BP124 BP125 BP126 BP127 * BP129 BP130 BP131 BP132 BP133`
	KEYWORD	`noisy, traditional`
	CONCEPT	`inside (info \| search),` `interior_exterior (info \| search),` `outlined_filled (info \| search),` `shape_cluster (info \| search),` `cluster (info \| search),` `same_number (info \| search),` `same (info \| search),` `texture (info \| search)`
	AUTHOR	`Douglas R. Hofstadter`

Dots equal in number to the sides of the closed region vs. dots unequal in number to the sides of the closed region.

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	CROSSREFS	`Adjacent-numbered pages: BP132 BP133 BP134 BP135 BP136 * BP138 BP139 BP140 BP141 BP142`
	KEYWORD	`left-null, traditional`
	CONCEPT	`same_number (info \| search),` `same (info \| search)`
	AUTHOR	`Douglas R. Hofstadter`

Two clusters of different numbers of elements vs. two clusters of equal number of elements.

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	CROSSREFS	`Adjacent-numbered pages: BP164 BP165 BP166 BP167 BP168 * BP170 BP171 BP172 BP173 BP174`
	KEYWORD	`traditional`
	CONCEPT	`number (info \| search),` `feature_cluster (info \| search),` `cluster_of_one (info \| search),` `cluster (info \| search),` `same_number (info \| search),` `same (info \| search),` `two (info \| search)`
	AUTHOR	`Harry E. Foundalis`

Scanning left-to-right, top-to-bottom, each filled box is separated from the next filled box by the same number of empty boxes vs. not so.

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	CROSSREFS	`Adjacent-numbered pages: BP239 BP240 BP241 BP242 BP243 * BP245 BP246 BP247 BP248 BP249`
	KEYWORD	`left-finite, right-finite, traditional`
	CONCEPT	`all (info \| search),` `subtraction (info \| search),` `outlined_filled (info \| search),` `wrapping_around_bounding_box (info \| search),` `same_number (info \| search),` `same (info \| search),` `texture (info \| search)`
	AUTHOR	`Matthew J. Howells`

Equal number of horizontal and vertical lines vs. unequal number of horizontal and vertical lines.

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	CROSSREFS	`Adjacent-numbered pages: BP276 BP277 BP278 BP279 BP280 * BP282 BP283 BP284 BP285 BP286`
	KEYWORD	`traditional`
	CONCEPT	`horizontal (info \| search),` `number (info \| search),` `same_number (info \| search),` `same (info \| search),` `vertical (info \| search)`
	WORLD	`segments_cross [smaller \| same \| bigger]`
	AUTHOR	`Sang-Joon Yoon`

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