The On-Line Encyclopedia of Bongard Problems

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Five concavities vs. not five concavities.

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	CROSSREFS	`Adjacent-numbered pages: BP226 BP227 BP228 BP229 BP230 * BP232 BP233 BP234 BP235 BP236`
	KEYWORD	`less, noisy, arbitrary, traditional`
	CONCEPT	`indentation (info \| search),` `number (info \| search),` `five (info \| search)`
	AUTHOR	`Giuseppe Insana`

Convex hull is a square vs. convex hull is not a square.

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	CROSSREFS	`Adjacent-numbered pages: BP237 BP238 BP239 BP240 BP241 * BP243 BP244 BP245 BP246 BP247`
	KEYWORD	`noisy, traditional`
	CONCEPT	`convex_hull (info \| search),` `square (info \| search)`
	AUTHOR	`Matthew J. Howells`

Prime number vs. composite number.

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	CROSSREFS	`Adjacent-numbered pages: BP248 BP249 BP250 BP251 BP252 * BP254 BP255 BP256 BP257 BP258`
	KEYWORD	`noisy, traditional`
	CONCEPT	`prime (info \| search),` `cluster (info \| search)`
	AUTHOR	`Andreas Gunnarsson`

Straight lines that join filled and outlined circles intersect vs. straight lines that join filled and outlined circles do not intersect.

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	CROSSREFS	`Adjacent-numbered pages: BP256 BP257 BP258 BP259 BP260 * BP262 BP263 BP264 BP265 BP266`
	KEYWORD	`noisy, traditional`
	CONCEPT	`lines_coincide (info \| search),` `x-crossing (info \| search),` `outlined_filled (info \| search),` `feature_cluster (info \| search),` `cluster (info \| search),` `imagined_line_or_curve (info \| search),` `imagined_entity (info \| search),` `texture (info \| search)`
	AUTHOR	`Michael Ihde`

One of the two small squares is near the lower-right corner vs. one of the two small squares is near the upper-right corner.

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	CROSSREFS	`Adjacent-numbered pages: BP293 BP294 BP295 BP296 BP297 * BP299 BP300 BP301 BP302 BP303`
	KEYWORD	`noisy, traditional`
	CONCEPT	`absolute_position (info \| search),` `existence (info \| search)`
	AUTHOR	`"Lewis"`

Three objects are identical, the fourth differs vs. not so.

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	CROSSREFS	`Adjacent-numbered pages: BP298 BP299 BP300 BP301 BP302 * BP304 BP305 BP306 BP307 BP308`
	KEYWORD	`noisy, traditional, fixedgrid`
	CONCEPT	`same_shape (info \| search),` `same (info \| search)`
	AUTHOR	`"Lewis"`

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