From the developer: "Logic Puzzler allows students and teachers to write, solve, or print engaging brain teasers! Included are dozens of level-sorted puzzles that can be played interactively on the computer or printed instantly into a worksheet-- plus the tools to make an unlimited number of custom puzzles! The flexible worksheet creator will make ready-to-copy worksheets in seconds from any of the puzzles, including a formatted solution grid and even an instant teacher answer key! Add clipart, change formatting, save and print worksheets or export them instantly to your favorite word processor with the click of a button."