Livio Zucca tiles polygons of equal perimeter, or isoperiploes.

Dan Thomasson looks at tesselations with numerous unexpected shapes traced out by knight moves.

Kevin Gong offers download of his polyominoes games shareware for Windows and Mac. 100 boards are included. A Java version is in the works.

Eric Harshbarger. This puzzle maker says that the hard part was finding legos in enough different colors.

Open source polyomino and polyform placement solitaire game.

Wil Laan's applet searches for solution of packing hexominoes into more than 45 different shapes.[Java]

Bezdek, Brass, and Harborth. Abstract to an article which places bounds on the convex area needed to contain a polyomino. (Contributions to Algebra and Geometry Volume 35 (1994), No. 1, 37-43.)

Tiling a square without cutting it into two.(Problem of the week 826, Spring 1997)

Joe Fields suggests that L-decomposition of squares of Pythagorean triplets could always be tiled.

Mehta & Ward Alberg explains the soma cube and provides an applet for practice. Source codes included. [Java]