Zucca's Challenge Problem for Extrominoes

Livio Zucca's Tetrominoes Challenge Page challenges you to find plane regions that can be tiled with each of a given set of tetrominoes and no others. Here I show solutions to the corresponding problem for extrominoes, or extended trominoes—figures formed by joining three equal squares orthogonally at edges or corners. They are also called trikings and triplets.

If you find a smaller solution for any of these sets, please let me know.

See also Zucca's Challenge Problem for Tetrahexes and Zucca's Challenge Problem for Polyiamonds.

The results below are Erich Friedman's except where noted otherwise.

Last revised 2015-11-06.

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Col. George Sicherman [ HOME | MAIL ]