Galvagni Figures & Reid Figures for Polyhops
Polyhops are Thomas Atkinson's figures made by joining squares in the
plane hopscotch grid.
They are used in Kate Jones's
A Galvagni figure is a figure that can be tiled by a polyform
in more than one way—a kind of self-compatibility figure.
A Reid figure is a Galvagni figure with no holes.
Galvagni figures first appeared in Erich Friedman's
for November 2004.
Here are minimal known Galvagni figures and Reid figure for polyhops.
The black tiles have no solution.
The gray tiles have no known solution.
Last revised 2012-02-24.
Back to Galvagni Compatibility.
Back to Polyform Compatibility.
Back to Polyform Curiosities.
Col. George Sicherman