The On-Line Encyclopedia of Bongard Problems

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Center of symmetry vs. no center of symmetry.

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	CROSSREFS	`Adjacent-numbered pages: BP264 BP265 BP266 BP267 BP268 * BP270 BP271 BP272 BP273 BP274`
	CONCEPT	`symmetry (info \| search)`
	WORLD	`arial_font_centered_connected_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

Can be hand-written without raising the pen vs. cannot be hand-written without raising the pen.

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	CROSSREFS	`Adjacent-numbered pages: BP266 BP267 BP268 BP269 BP270 * BP272 BP273 BP274 BP275 BP276`
	CONCEPT	`write_in_single_stroke (info \| search)`
	WORLD	`arial_font_centered_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

Notch from above (holds poured water) vs. no notch from above (does not hold poured water).

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	CROSSREFS	`Adjacent-numbered pages: BP269 BP270 BP271 BP272 BP273 * BP275 BP276 BP277 BP278 BP279`
	KEYWORD	`notso, physics`
	CONCEPT	`concave_convex_region (info \| search),` `downward_upward (info \| search),` `line_absolute_direction (info \| search),` `absolute_direction (info \| search),` `direction (info \| search),` `liquid_flow (info \| search),` `gravity (info \| search)`
	WORLD	`arial_font_centered_connected_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

At least one endpoint vs. no endpoints.

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	CROSSREFS	`Adjacent-numbered pages: BP271 BP272 BP273 BP274 BP275 * BP277 BP278 BP279 BP280 BP281`
	CONCEPT	`line_or_curve_endpoint (info \| search),` `existence (info \| search)`
	WORLD	`arial_font_symbols [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

One object vs. two or more objects.

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	CROSSREFS	`Adjacent-numbered pages: BP272 BP273 BP274 BP275 BP276 * BP278 BP279 BP280 BP281 BP282`
	KEYWORD	`number`
	CONCEPT	`number (info \| search)`
	WORLD	`arial_font_symbols [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

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