# Browse Items (79 total)

- Tags: Puzzle

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## 14 Rabbiducks

The puzzle is to fit 14 “rabbiduck” polyomino pieces into an 8x11 rectangle. (Gardner wrote about polyominoes in multiple columns. The specific polyomino pieces used are inspired by the rabbit/duck illusion that Gardner called the Rabbitduck in his…

**Tags:**
G4G14, Puzzle, Recreational Math

## 4!-Fold Puzzle

Are there any polycubes that can be unfolded into exactly a rectangle? This problem was solved in 2019. The smallest solution forms a nice puzzle — fold the rectangle into a polycube!

**Tags:**
G4G14, polycube, polyominoes, Puzzle

## A G4G14 Puzzle

This is a paper ring with a number puzzle. The hint is actually the logo that is at the beginning (which of course will be right after the end when it's a ring).

**Tags:**
G4G14, Puzzle, Recreational Math

## A Torus Without Diagonals

Cut-and-fold a polyhedron with 7 vertices, 14 faces, 21 edges, and a hole through it like a doughnut. A cube has internal diagonals that connect the diametrically opposite corners. By contrast, this polyhedron has no internal diagonals. There are…

**Tags:**
G4G14, Puzzle, Recreational Math