Penrose triangle
Oscar Reutersvärd; independently Lionel & Roger Penrose
Three convincing corners. One impossible connection.
Impossible objects / 2010 digital edit
Impossible chair
A digitally altered chair gives its supports contradictory connections.
TRY THIS
View larger, then trace one connected edge all the way through the object. Compare the local joins with the whole shape.
THE IMAGE IN THIS ARCHIVE
TipFox
Original file & attribution · CC BY-SA 4.0
Original image downloaded from Wikimedia Commons; the downloaded file is unchanged. Gallery previews may be resized or converted to WebP; animated previews show the first frame.
Download imageFrequently asked questions
What is Impossible chair?
A digitally altered chair gives its supports contradictory connections.
What should I look for in Impossible chair?
View larger, then trace one connected edge all the way through the object. Compare the local joins with the whole shape.
What explains Impossible chair?
The Commons description identifies this as a Photoshop construction. Familiar furniture makes the image persuasive, while the edited joins undermine a consistent solid chair.
Another way to see it
Explore this category
Impossible cube
M. C. Escher; modern redraw by 4C and Belbury
A familiar cube frame acquires an impossible set of overlaps.
