Tony Fisher - Cubillusion (2013)

⟬ Fisher Fortnight ⟭——[ puzzles made by Tony Fisher ]——02. Cubillusion (2013)

made from a bandaged and extended Eastsheen 4x4, with a concave section designed to look, from a certain angle, like a convex 3x3.

technically, this is the three-dimensional version of a two-dimensional pattern called 'rhombille tiling', where a lack of visual depth cues creates an illusion of ambiguous orientation, and often a phenomenon known as 'multistable perception' (in this case, 'bistable perception'), where the brain switches back and forth between two or more possible interpretations.

the extensions themselves are bandaged to create an arch and two hooks (see last photo), under which some pieces can pass and others are blocked.  all in all, a very cool design.

TwistyPuzzles.com museum entry: https://twistypuzzles.com/app/museum/museum_showitem.php?pkey=4648

♫: 

▪ everything i have is in the photos.

▪ buyer pays shipping, calculated after the auction.

▪ shipment is by USPS Priority Mail, insured for the full sale price and trackable.

▪ payment via PayPal only.

▪ all puzzles in my collection have been kept out of sunlight, in a humidity-stable room or sealed plastic container, away from pets unless they can solve them, and in a non-smoking household.

thank you for looking, and good luck if you bid.

:cameron: