Greek Squares is a game of logic and deduction. It has 10 different puzzle "layouts", 3 of which are standard Sudoku puzzles (9x9, 12x12, and 16x16). The other 7 layouts use irregularly shaped tiles, which provide more interesting deductions than are possible in standard Sudoku puzzles. The goal is to place one of each of the numbers into each row, column and tile. Each puzzle is guaranteed to have one and only one solution. The game places some numbers for you at the start of the puzzle. Using those (and the knowledge that there can be only one of each number in each row, column and tile) you remove possibilities from the puzzle until you can place numbers where they must be located. The game also supports entering the clues from standard 9x9 and 16x16 Sudoku puzzles as they appear in newspapers and magazines so that you can solve them on the computer rather than with pencil and paper. The game also lets you print out the puzzles for solving by pencil when you're away from your computer. The game includes tens of thousands of different puzzles, enough to keep you busy until you go crazy from seeing squares...