Heptiamonds: Puzzles & Solutions

Author: David Goodger <goodger@python.org>
Date: 2015-03-20
Revision: 625
Web site:http://puzzler.sourceforge.net/
Copyright: © 1998-2015 by David J. Goodger
License:GPL 2
images/puzzler.png

Contents

Heptiamonds

The heptiamonds consist of 24 7-triangle polyforms, for a total of 168 unit triangles.

Triangles

Stacks

Stacks of 2-unit-high elongated hexagons; approximations of rectangles.

Snowflakes

Irregular Hexagons

Four 2x3 Hexagons

In various configurations.

Hexagrams

H(1) Hexagonal-Grid Shapes

These shapes are all based on the hexagonal grid, made up of 28 6-triangle hexagons (side length 1). In fact, many of these shapes are also tetrahex puzzles.

Some shapes have hexagonal-grid holes, others have triangular-grid holes.

H(2) Hexagonal-Grid Shapes

These shapes are all based on the hexagonal grid, made up of 7 24-triangle hexagons (side length 2).

Quintuple Heptiamonds

The heptiamonds consist of 24 7-triangle polyforms, totalling 168 unit triangles. Take a heptiamond, replace each unit triangle with an order-5 triangle, and the total is 175 unit triangles. Remove 7 excess unit triangles (say, a hole the shape of the heptiamond we are replicating), and the designs below are the result.

For another way to accomplish this replication, see Miroslav Vicher's Puzzle Pages.

Misc

One-Sided Heptiamonds

The one-sided heptiamonds consist of 43 7-triangle polyforms, for a total of 301 unit triangles.