ByTheNumbers3 suggests you to fill in a 3x3 square with the numbers 1 through 9 so that the rows, columns and diagonals add up to specified numbers. Your score decreases with the time it takes to solve the puzzle. You are given the choice of "buying" a number at a cost of loosing time. In the static version of the game, first introduced in version 2.2, you loose points when "buying" a number. In this version the numbers you buy are color coded so that you know not to move them as the game proceeds. This is fully functional as is but paying the shareware fee allows for saving scores and unlocks an expert version of the game. This is the first version which runs both on PPC and Intel.
