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BP59 Figures are similar vs. figures are not similar.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 233.

CROSSREFS

Adjacent-numbered pages:
BP54 BP55 BP56 BP57 BP58  *  BP60 BP61 BP62 BP63 BP64

KEYWORD

nice, finished, unorderedpair, traditional, bongard

CONCEPT similar_shape (info | search),
similar (info | search)

WORLD

two_outlines [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

BP58 Solid dark quadrangles are identical vs. solid dark quadrangles are different.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 233.

CROSSREFS

Adjacent-numbered pages:
BP53 BP54 BP55 BP56 BP57  *  BP59 BP60 BP61 BP62 BP63

KEYWORD

noisy, finished, traditional, bongard

CONCEPT identical (info | search),
outlined_filled (info | search),
square (info | search),
feature_cluster (info | search),
cluster (info | search),
same_shape (info | search),
same (info | search),
texture (info | search)

AUTHOR

Mikhail M. Bongard

BP57 Identical figures vs. figures not identical.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 232.

CROSSREFS

BP1222 is similar but allows the shapes to be different sizes.

BP343 is about existence of a pair of identical shapes among many shapes.

Adjacent-numbered pages:
BP52 BP53 BP54 BP55 BP56  *  BP58 BP59 BP60 BP61 BP62

KEYWORD

nice, finished, unorderedpair, traditional, bongard

CONCEPT identical (info | search),
same_shape (info | search),
same (info | search)

AUTHOR

Mikhail M. Bongard

BP56 All figures of the same color vs. figures of different colors.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 232.

CROSSREFS

Adjacent-numbered pages:
BP51 BP52 BP53 BP54 BP55  *  BP57 BP58 BP59 BP60 BP61

KEYWORD

finished, traditional, bongard

CONCEPT all (info | search),
outlined_filled (info | search),
same_feature (info | search),
same (info | search),
texture (info | search)

AUTHOR

Mikhail M. Bongard

BP55 A circle is at the left of the cavity if you look from inside the figure vs. a circle is at the right of the cavity if you look from inside the figure.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 232.

CROSSREFS

Adjacent-numbered pages:
BP50 BP51 BP52 BP53 BP54  *  BP56 BP57 BP58 BP59 BP60

KEYWORD

dual, handed, finished, traditional, bongard

CONCEPT indentation (info | search),
on_line_or_curve (info | search),
separation_of_joined_objects (info | search),
tracing_line_or_curve (info | search),
rotational_direction (info | search),
direction (info | search)

AUTHOR

Mikhail M. Bongard

BP54 A cross, circle, and triangle arranged counterclockwise vs. a cross, circle, and triangle arranged clockwise.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 231.

CROSSREFS

Adjacent-numbered pages:
BP49 BP50 BP51 BP52 BP53  *  BP55 BP56 BP57 BP58 BP59

KEYWORD

dual, handed, finished, orderedtriplet, traditional, bongard

CONCEPT turn_orientation (info | search),
rotational_direction (info | search),
triangle (info | search),
direction (info | search)

AUTHOR

Mikhail M. Bongard

BP53 Inside figure has fewer angles than outside figure vs. inside figure has more angles than outside figure.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 231.

CROSSREFS

Adjacent-numbered pages:
BP48 BP49 BP50 BP51 BP52  *  BP54 BP55 BP56 BP57 BP58

KEYWORD

spectrum, finished, traditional, discrete, viceversa, bongard

CONCEPT inside (info | search),
number (info | search),
quantity_comparison (info | search)

AUTHOR

Mikhail M. Bongard

BP52 Arrows pointing in different directions vs. arrows pointing in the same direction.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 231.

CROSSREFS

Adjacent-numbered pages:
BP47 BP48 BP49 BP50 BP51  *  BP53 BP54 BP55 BP56 BP57

KEYWORD

finished, traditional, bongard

CONCEPT arrow (info | search),
tracing_lines_or_curves_meet (info | search),
pointing_to (info | search),
tracing_line_or_curve (info | search),
imagined_point (info | search),
imagined_entity (info | search)

AUTHOR

Mikhail M. Bongard

BP51 Two circles close to each other vs. no two circles close to each other.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 230.

CROSSREFS

Adjacent-numbered pages:
BP46 BP47 BP48 BP49 BP50  *  BP52 BP53 BP54 BP55 BP56

KEYWORD

nice, finished, traditional, bongard

CONCEPT near_far (info | search)

WORLD

four_dot_outlines [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

BP50 Vertical axis of symmetry vs. no axis of symmetry.
(edit; present; nest [left/right]; search; history)
REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 230.

CROSSREFS

BP152 is the same solution (with the sides switched), using connected shapes and without black filling.

BP1206 was created to be a slightly different version of this: "vertical axis of symmetry vs. no vertical axis of symmetry." (That less specific solution fits this Bongard Problem as well.)

Adjacent-numbered pages:
BP45 BP46 BP47 BP48 BP49  *  BP51 BP52 BP53 BP54 BP55

KEYWORD

nice, stretch, left-narrow, finished, traditional, bongard

CONCEPT symmetry_axis (info | search),
symmetry (info | search)

WORLD

curves_and_fill_shapes_separate_drawing [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

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