The On-Line Encyclopedia of Bongard Problems

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Same curvature close to the middle vs. change of curvature close to the middle.

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	CROSSREFS	`Adjacent-numbered pages: BP178 BP179 BP180 BP181 BP182 * BP184 BP185 BP186 BP187 BP188`
	KEYWORD	`noisy, traditional`
	CONCEPT	`sides_of_line (info \| search),` `tangent (info \| search),` `imagined_point (info \| search),` `imagined_line_or_curve (info \| search),` `imagined_entity (info \| search)`
	WORLD	`curve [smaller \| same \| bigger]`
	AUTHOR	`Harry E. Foundalis`

Elongated vertically vs. elongated horizontally.

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	CROSSREFS	`Adjacent-numbered pages: BP187 BP188 BP189 BP190 BP191 * BP193 BP194 BP195 BP196 BP197`
	KEYWORD	`nice, noisy, traditional`
	CONCEPT	`convex_hull (info \| search),` `elongated_compact (info \| search),` `horizontal (info \| search),` `vertical (info \| search)`
	WORLD	`[smaller \| same \| bigger]`
	AUTHOR	`Harry E. Foundalis`

Background is a parallelogram vs. background is a triangle.

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	CROSSREFS	`Adjacent-numbered pages: BP189 BP190 BP191 BP192 BP193 * BP195 BP196 BP197 BP198 BP199`
	KEYWORD	`easy, nice, noisy, traditional`
	CONCEPT	`shape_background (info \| search),` `number (info \| search),` `imagined_shape (info \| search),` `imagined_entity (info \| search),` `triangle (info \| search)`
	AUTHOR	`Harry E. Foundalis`

Two of the shapes make tiles along their border lines vs. not so.

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	CROSSREFS	`Adjacent-numbered pages: BP196 BP197 BP198 BP199 BP200 * BP202 BP203 BP204 BP205 BP206`
	KEYWORD	`noisy, traditional`
	CONCEPT	`rotation_required (info \| search),` `tiling (info \| search),` `imagined_motion (info \| search),` `motion (info \| search)`
	WORLD	`fill_shapes [smaller \| same \| bigger]`
	AUTHOR	`Giuseppe Insana`

Even number vs. odd number.

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	CROSSREFS	`See BP334 for a version of the same idea, but using dots instead of arbitrary shapes.` `Adjacent-numbered pages: BP197 BP198 BP199 BP200 BP201 * BP203 BP204 BP205 BP206 BP207`
	KEYWORD	`noisy, number, traditional`
	CONCEPT	`even_odd (info \| search)`
	AUTHOR	`Giuseppe Insana`

Prime number vs. composite number.

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	CROSSREFS	`Adjacent-numbered pages: BP198 BP199 BP200 BP201 BP202 * BP204 BP205 BP206 BP207 BP208`
	KEYWORD	`noisy, number, math`
	CONCEPT	`prime (info \| search)`
	AUTHOR	`Giuseppe Insana`

Five vs. four.

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	CROSSREFS	`Adjacent-numbered pages: BP199 BP200 BP201 BP202 BP203 * BP205 BP206 BP207 BP208 BP209`
	KEYWORD	`noisy, number, traditional`
	CONCEPT	`number (info \| search)`
	AUTHOR	`Giuseppe Insana`

Curve ends on the left part of the box vs. curve ends on the right part of the box.

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	CROSSREFS	`Adjacent-numbered pages: BP202 BP203 BP204 BP205 BP206 * BP208 BP209 BP210 BP211 BP212`
	KEYWORD	`noisy, handed, leftright, traditional`
	CONCEPT	`absolute_position (info \| search),` `line_or_curve_endpoint (info \| search)`
	AUTHOR	`Giuseppe Insana`

No objects are centered at the center of the box vs. one object is centered at the center of the box.

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	CROSSREFS	`Adjacent-numbered pages: BP204 BP205 BP206 BP207 BP208 * BP210 BP211 BP212 BP213 BP214`
	KEYWORD	`noisy, boundingbox, traditional, absoluteposition`
	CONCEPT	`bounding_box (info \| search),` `existence (info \| search),` `number (info \| search),` `center_bounding_box (info \| search),` `center (info \| search)`
	AUTHOR	`Giuseppe Insana`

Large black region if completed is a circle vs. large black region if completed is an ellipse.

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	CROSSREFS	`Adjacent-numbered pages: BP218 BP219 BP220 BP221 BP222 * BP224 BP225 BP226 BP227 BP228`
	KEYWORD	`noisy, perfect, traditional`
	CONCEPT	`imperfection_small (info \| search)`
	AUTHOR	`Giuseppe Insana`

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