Cross Puzzle – The Game Pieces

Just like in the Tangram puzzle, each piece of the Cross puzzle can be assembled from right isosceles triangles. The puzzle pieces belong to the family of polyabolos.

Cross puzzle pieces

The Cross Puzzle

How do you turn a rectangle into a cross?

This is the starting puzzle of the Cross Puzzle.
However, the seven pieces allow for much more – numerous additional shapes can be formed from them.

In contrast to Tangram shapes, which mostly reproduce representational silhouettes, the Cross puzzle shapes consist primarily of abstract, geometrically symmetrical forms. Many of them fit exactly into a grid of right isosceles triangles and are therefore suitable for automated solution searching with a solving program.

A selection of Cross Puzzle shapes
shape 1
solution shape 1
shape 2
solution shape 2
shape 3
solution shape 3
shape 4
solution shape 4
shape 5
solution shape 5
shape 6
solution shape 6

Resources & Downloads

3D Print Templates

The 3D-print templates consist of the seven Cross puzzle pieces and a slider box.

3D printed Puzzle
Sliderbox

Solver program

screenshot cross puzzle solver

The Cross Puzzle solver is part of a program collection available for download on Itch.io. It is for Windows only.

IMPORTANT: For a correct installation, please read the Instructions before unpacking!


Crafting Templates

Download multi-colored crafting templates for a cardboard Cross puzzle

Crafting Templates