

ALL ORIGINAL ARTWORK ON WHICH SOME OF THESE MODELS ARE BASED ARE COPYRIGHT © THEIR RESPECTIVE OWNERS AND ACKNOWLEDGED.
Based On Oscar Reutersvärd
Based On Roger Penrose

Just a few versions…

Staircase 3443

Staircase 3553

Staircase 3663

Staircase 3773

Staircase 4554

Staircase 4664

Staircase 4774

Staircase 4884
Copies Of Oscar Reutersvärd
Tri-bars

"Opus 2B"

"Opus 1 No 293 aa"


"Follow The Groove"

"Extended Tribar"

"Impossible Triangle With A Twist"

Four-bars

"No 274"

"No 365 baf"

"No 384 ag"

Windows
Shelving
Copy Of Bruno Ernst

"Impossible Penetration"
Coloured copy of a line sketch from The Eye Beguiled & Adventures With Impossible Figures.
Copies Of Other Artists

"Cube In Blue" by Monika Buch From The Eye Beguiled by Bruno Ernst.

From Martin Gardner's "Dr. Matrix" articles for Scientific American, 1976 (unknown artist).

"A Slightly Difficult Interlocking Wood Puzzle" by Mitsumasa Anno From The Eye Beguiled by Bruno Ernst.

My variation of the previous Wood Puzzle with the third end changed as well.
Copies Of Other Illusions
Space Filling
Other Objects
The following three images show stills from the animation of an impossible inside corner of a cube morphing to an impossible outside corner of a cube, via a truncated tri-bar, though notice it's only the width of the 'walls' that change: the hole remains the same size.
Strange Geometry
These shapes are all possible : only the perspective makes them seem odd.