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Hiding in Plain Sight: Secret Messages in Vyshyvanka Embroidery
Vyshyvanka is an embroidered Ukrainian shirt. Each region has its own traditions for vyshyvanka colors and designs. The artists who cross-stitch their vyshyvankas often hide names or inspirational messages in their creations. The paper will invite…
The Thirty Color Cubes Problem
My exchange gift will provide information on the 30 Color Cubes Problem. I expect to include materials relevant to making a set of these cubes, e.g., folding paper cubes, color stickers, labels, etc.
15 Mathemagics for G4G15 - In Between Magic and Topology
This paper presents 15 vignettes, each designed to evoke both mathematics and magic. We end with a super-generalization of the Chefalo Rope Trick and the insight that 15 = 3 x 5 = 1x1 + 1 x 1 + 2 x 2 + 3 x 3.
Solomon's Trinity
Solomon's Trinity is a game and puzzle played on a modified Star of David gameboard, including activities to be played with 15 game pieces. Recipients can add a nickel, dime, quarter, and 15 or more pennies as game pieces. Formal game pieces can be…
Jekyll and Hyde Chess Tours
A series of chess tour puzzles in which a "Jekyll ad Hyde" piece alternates between knight and bishop moves.
Geometric Graph Puzzles
Printed puzzles based on my research in geometric graph theory.
Developing an Unusual Puzzle Set
I created an unusual puzzle set for a group to solve, with a geometrical aspect you'll appreciate. This paper explains how I made it all work.
A Collection of Puzzles
I will prepare a small booklet of puzzles that relate to numbers, colors, and networks.
Cards for Word Games (Martin Gardner Related)
This set of 36 cards is for word-based games (e.g., Just One, 25 Words or Less, Password, Poetry for Neanderthals). The words on the cards come from the titles of Martin Gardner's Mathematical Games column in Scientific American and his Wikipedia…
Tag Team Rolling Block
A rolling block maze with two blocks of different sizes. Tag up to complete the challenge!
Dodecasphinx
A 2D wooden packing puzzle with 13 pieces. ( https://www.jaapsch.net/g4g/g4g15.htm )
The Riddle of the Four Prophets
In this paper we provide an original mathematical riddle and an accompanying clever solution.
Crossover Spiral
An illusion / puzzle where 2 routes crossover but there appears to be no visible means of doing so
Hints for Designing Puzzles
From the perspective of a designer of various mathematical puzzles, including mechanical puzzles, this article carefully selects puzzles deemed suitable for discussion in this context, from those I have designed so far. It introduces these puzzles…
The Great Beetle Escape
A mathematical puzzle in which beetles try to reach the destination by checker moves.
Father & Son Sudoku
Three variant sudoku puzzles set by a father-son duo!
Pickagram G4G Addition
Tangram inspired magnetized 3d art puzzle. You can find more info from www.pickagram.com
Warped-Grid Jigsaw Puzzle
A laser-cut wooden Warped-Grid Puzzle to disassemble and reassemble. An underlying square grid is warped in various ways to produce a small but challenging puzzle. See http://georgehart.com/jigsaw/
Trapdoor Octahedron Puzzle
A three piece puzzle. The paper document will be 1-3 pages long, describing how the puzzle was designed.
Five Problems
Five Mathematical Puzzles.
Can the Number of Pieces in a Rectangular Jigsaw Puzzle be a Multiple of the Number of Edge Pieces
This paper deals with the math associated with the number of edge pieces in rectangular jigsaw puzzles.
Dragon Riders Puzzle Postcard
A postcard with a puzzle on it - how to make the two riders ride their dragons the right way up?
Physical Booklet: Tennis Puzzles
A collection of puzzles related to tennis
SPACE CHIPS DIE CUT & SPROING BALL
SPACE CHIPS DIE CUT & SPROING BALL