Puzzle of the Week [berkeley.edu] [IA][Direct] -
A weekly game where puzzles (logic, word, mathematical, etc.) are posted weekly. Players submit answers by e-mail and correct answers are posted at the end of the week.
Puzzle of the Week [umd.edu] [IA][Direct] -
You have a week to answer before the next puzzle comes up. Answers are displayed for last week's puzzle.