Polyiamonds

Polyiamonds: the polyominoes' meaner, pointier, harder-to-deal-with cousins. I don't have a great deal of content relating to these just because I can't get my head around them, to be quite honest. I don't know quite what it is - the fact the grid has triangles in two different orientations? The mixture of 60 and 120-degree angles? - but solving anything with these, at least by hand, is a few levels above polyominoes or polyhexes.

General

  • Polyiamonds 101: an overview.

    • Heptiamonds

  • Heptiamonds: some shapes and some half-baked rambling about piece frequencies.

    • Octiamonds

  • Early forays into solving octiamonds by hand
  • Parity and Octiamonds: A Horror Story - (coming soon maybe)

    • Enneiamonds

  • Side 38 triangle with enneiamonds
  • 2x 19x19 rhombi
  • Height 11 trapezium (solved 100% by hand this time!)

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    Lewis Patterson. Last updated 08/05/21.