These puzzles use the eight trihings. The pieces cover an area of
unit hexagons, but extra spaces must be enclosed. If solid
pieces are used, patterns are considered symmetric regardless
of the position of the bridges.
all the pieces to make a symmetric pattern. Here are examples
for the different types of symmetry.
Type of Symmetry
Oddities and Compatibilities
oddity is a figure with binary symmetry formed by an
odd number of copies of a polyform. Polyforms are compatible if
there is a shape that can be tiled by each. You can find more about
Polyform Oddities and Polyform Compatibility at George Sicherman's
Polyform Curiosities website.
Di- and Trihing Puzzles
These puzzles use the eight trihings
and the two dihings. The pieces cover an area of
unit hexagons, but extra spaces must be enclosed.
Contact me with suggestions, comments or questions.