Galvagni Figures & Reid Figures for Heptominoes

A heptomino is a figure made of seven squares joined edge to edge. 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 without holes.

Some of these figures were found by Michael Reid of the University of Central Florida and Erich Friedman of Stetson University.

For pentominoes, see Galvagni Figures & Reid Figures for Pentominoes.
For hexominoes, see Galvagni Figures & Reid Figures for Hexominoes.
For octominoes, see Galvagni Figures & Reid Figures for Octominoes.

Galvagni Figures

Hypersymmetric Variants

Unsolved

 

 

Reid Figures

Hypersymmetric Variants

 

Level Heptominoes

A level polyomino may be reflected orthogonally and rotated 180° but not 90°.

Holeless Variants

Last revised 2014-10-31.


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Col. George Sicherman [ HOME | MAIL ]