Erich's Puzzle Palace
http://www.stetson.edu/~efriedma/puzzle.html
Grade: A

Date reviewed: 8/13/04

Erich Friedman is an Associate Professor of Mathematics at Stetson University in Florida. He's kind of a strange guy; he has an affection for friendship bracelets, bad math jokes, poker, and, of course, puzzles.

His Puzzle Palace contains 28 different types of puzzles, mostly pertaining to math or logic. There are Battleship-style puzzles, numerical jigsaws, and liar/truthteller logic puzzles about Tweedledum and Tweedledee. Many of these kinds of puzzles can be found in GAMES magazine, but Friedman presents some unique variations. There are Square Puzzles, which are similar to the Paint-By-Logic puzzles (or my own Word Mosaic Puzzles), but consist solely of different-sized squares. Or Path Puzzles, in which you have to find the meeting point of paths originating from different locations within a grid.

This site is not at all interactive. Puzzles must be printed out and solved with pencil and paper. Assuming you can solve them; his puzzles have been used by the U.S. Puzzle Championship since 1999, and are generally quite difficult.