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Displaying 1-9 of 9 results found.     page 1
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BP115 Innermost shape is reachable from the outermost one vs. innermost shape is unreachable from the outermost one.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP110 BP111 BP112 BP113 BP114  *  BP116 BP117 BP118 BP119 BP120

KEYWORD

traditional

CONCEPT innermost_outermost (info | search),
path (info | search),
reachable (info | search),
tracing_line_or_curve (info | search)

AUTHOR

Douglas R. Hofstadter

BP118 No cycle vs. a cycle exists.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP113 BP114 BP115 BP116 BP117  *  BP119 BP120 BP121 BP122 BP123

KEYWORD

traditional

CONCEPT arrow (info | search),
cyclic_path (info | search),
existence (info | search),
path (info | search)

AUTHOR

Douglas R. Hofstadter

BP176 Line that connects dots avoiding obstacles is short vs. line that connects dots avoiding obstacles is long.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP171 BP172 BP173 BP174 BP175  *  BP177 BP178 BP179 BP180 BP181

KEYWORD

nice, spectrum, traditional, continuous

CONCEPT length_line_or_curve (info | search),
path (info | search)

AUTHOR

Harry E. Foundalis

BP294 The two points are reachable through a path vs. the two points are unreachable by any path.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP289 BP290 BP291 BP292 BP293  *  BP295 BP296 BP297 BP298 BP299

KEYWORD

traditional

CONCEPT maze (info | search),
path (info | search),
reachable (info | search)

AUTHOR

"Lewis"

BP314 Long distance between the marked locations vs. short distance between the marked locations.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP309 BP310 BP311 BP312 BP313  *  BP315 BP316 BP317 BP318 BP319

KEYWORD

traditional

CONCEPT length_line_or_curve (info | search),
maze (info | search),
path (info | search)

AUTHOR

Jakub Štepo

BP316 At least one path is a cycle vs. no path is a cycle.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP311 BP312 BP313 BP314 BP315  *  BP317 BP318 BP319 BP320 BP321

KEYWORD

traditional

CONCEPT cyclic_path (info | search),
maze (info | search),
path (info | search)

AUTHOR

Jakub Štepo

BP321 Small round object unreachable from the border of the box vs. small round object reachable from the border of the box.
(edit; present; nest [left/right]; search; history)
COMMENTS

Equivalently, "small round object enclosed by white loop vs. not so."

CROSSREFS

Adjacent-numbered pages:
BP316 BP317 BP318 BP319 BP320  *  BP322 BP323 BP324 BP325 BP326

KEYWORD

nice, precise, allsorted, boundingbox, perfect, pixelperfect, traditional, bordercontent

CONCEPT bounding_box (info | search),
path (info | search),
reachable (info | search)

AUTHOR

Aaron David Fairbanks

BP394 For each colored square only, there exists a path starting on it that covers each square of the figure exactly once vs. there is no path that starts on a colored square and covers each square of the figure exactly once.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP389 BP390 BP391 BP392 BP393  *  BP395 BP396 BP397 BP398 BP399

KEYWORD

hard, nice, solved, traditional, dithering, left-listable, right-listable

CONCEPT existence (info | search),
path (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search)

AUTHOR

Jago Collins

BP997 There exists a loop that passes through every white square once without passing through the black square vs. there exists no such loop.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP992 BP993 BP994 BP995 BP996  *  BP998 BP999 BP1000 BP1001 BP1002

KEYWORD

precise, allsorted, grid, preciseworld, left-listable, right-listable

CONCEPT path (info | search)

AUTHOR

James Tanton

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