Sudoku is a great little Japanese logic puzzle.
Basically, you have a 9x9 grid that is made up of 9 3x3 grids. Some of the cells will have a digit in them to start. When you finish, each row of the 9x9 grid will contain the digits 1-9, and each column will contain the digits 1-9. In addition, each 3x3 grid will contain the digits 1-9.
That's it.
Sounds like a good
thread for Programming Diversions -- create a Sudoku solver.
Piscis Babelis est parvus, flavus, et hiridicus, et est probabiliter insolitissima raritas in toto mundo.