Browse Items (68 total)

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Tax-G13-109-1.jpg
Bill Gosper shared this problem with me. He calls it the Tax Man Problem. In the province of Peculia Pecunia, you are paid on an annular basis. That is, you get a (unit radius) gold disk from whose center is punched a smaller disk which you donate to…

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-ShiftingMaze-G13-107-1.jpg
A maze on a flexagon, where the faces keep getting rearranged, adding an additional challenge to finding your way through the maze.

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Mobius-G13-106-1.jpg

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Wolfram-G13-105-1.jpg
Assemble a paper sculpture of the Wolfram logo, affectionately known as "The Spikey".

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SamLoyd-G13-098-1.jpg
In 1909, the Lyon Manufacturing Co. of Brooklyn, NY, published a small advertising booklet for Mexican Mustang Liniment. The booklet contained sixteen Sam Loyd puzzles, most signed with Loyd’s name. Most of the puzzles were duplicates or redrawn…

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Dragon-G13-097-1.jpg
My contribution to the gift exchange is stickers hiding clues leading to a mathematical treasure hunt I'm hosting across my blog and a few other spots on the internet. I also have a physical prize for the first person to reach the end.

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-TheBarber-G13-091-1.jpg
Bookmark with philosophiocal logic puzzle.

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Poker-G13-081-1.jpg
It combines a deck of playing cards, tangram puzzle illustration, folk games (Chinese zodiac) in one set.

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Tangle-G13-080-1.jpg
G4G Give-away

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SpaceLogic-G13-074-1.jpg
A single two sided heavy page detailing some research on linked circles, space numbers and space logic as a physical gift. In addition a downloaded paper on the same subjects with more details.

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SculpturalGardner-G13-071-1.jpg
My contribution to the gift exchange is a 5 X 7 inch, four-color, tri-fold glossy card with photographed imagery of my 11 X 12 X 9 inch multifaceted-portrait-sculpture of Martin Gardner. My painted, kiln-fired, stained glass and…

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-NestingBox-G13-068-1.jpg
The puzzle consists of two boxes, with lids, One box is white and the other is blue. Place the white box inside of the blue box and close the lid. Now open the blue box and remove the white box. Next place the blue box inside of the white box and…

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-PuzzlePencil-G13-067-1.jpg
Engraved puzzlehunt pencil.

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Walls-G13-066-1.jpg
The gift is a postcard with a few examples of a Japanese pencil-and-paper logic grid puzzle on it.

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Money-G13-059-1.jpg
Martin Gardner introduced me to Vanishing Area Paradox Puzzles in Aha! Gotcha! with the Vanishing Leprechaun Puzzle. He explained the paradox by describing an old counterfeiting method. I've learned the method and so I'm going to share it with you.…

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-FoldPuzzle-G13-056-1.jpg
Folding puzzle designed by Markus Götz.

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Knight-G13-055-1.jpg
Knight mazes are a set of squares on a square lattice upon which a chess knight may move. We examine elements of mazes which can be both attractive and puzzling, and discuss two methods of creating mazes.

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-KenKen-G13-054-1.jpg
“Kencils”, jumbo pencils with sample puzzle sheet

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-HyperbolicPlane-G13-052-1.jpg
A scissors and tape activity on a letter sized sheet of cardstock, for building a horocyclic model of the hyperbolic plane, with a postcard-sized memento of of our sculpture build attached.

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Forevermore-G13-047-1.jpg
Years ago, when I first learned of the Temporal Logic system called D, I made a puzzle postcard using the system and mailed copies to a few friends. They seemed to enjoy it, so I'm doing it again, for the Gift Exchange.

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Mazes-G13-043-1.jpg
Illustration and maze design by Elizabeth Carpenter.

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Deltoidal-G13-042-1.jpg
The included piece will be a decorated deltoidal icositetrahedron net, which can be colored and subsequently cut and assembled. Alternatively, those with a cutting machine can cut the closed regions on each face of the polyhedron to obtain an…

Tags: , ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Colombia-G13-041-1.jpg
A small collection of Latin square themed puzzles created in honor of the G4G13 conference.

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Lock-G13-038-1.jpg
I have gifted an assortment of laser cut acrylic kits of simple mechanisms, including locks, engines, and other such mechanical devices. These were originally designed as physical diagrams for a book project, but are now being produced for sale.…

Tags: ,

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Flexier-G13-036-1.jpg
This is a standard trihexaflexagon with some extra crease lines. Cut it out and fold it up in the usual way, using tape or glue, adding the extra creases. The new degrees of freedom allow the hexaflexagon to swim along itself like Escher's fish, as…

Tags: ,

Output Formats

atom, dcmes-xml, json, omeka-xml, rss2