==References====External links==* Golomb's inductive proof of a tromino theorem at cut-the-knot* Tromino Puzzle at cut-the-knot* Interactive Tromino Puzzle at Amherst College
* Golomb's inductive proof of a tromino theorem at cut-the-knot* Tromino Puzzle at cut-the-knot* Interactive Tromino Puzzle at Amherst College