A-To-Z is a one-player puzzle where your goal is to find a path from the 'A' in upper left corner to the 'Z' in the lower right corner. The stones you step on are all stamped with letters, and you cannot step on a same letter twice.
 
The sizes of the puzzles range from 5x5 to 10x10. There are fifteen puzzles altogether. The smaller boards are easy even for children, but the larger boards are more fun for anybody.
 
All the board layouts have been created by a program, and are ensured to have only one solution.
 
The program that creates layouts has also been included here. It's a Python script, and you need Python to run it. There's a batch file that runs the script, and it assumes that you've installed Python in directory C:\Python20. The batch file is called RUNBOARD.BAT and you're supposed to give it three numbers as parameters: x, y, and n, where x and y range from 5 to 10, and n ranges from (x + y - 1) to 25. For example, to create a 10x10 puzzle, run RUNBOARD 10 10 25
The new puzzle is saved as AUTOMATIC.ZRF. It's included by the main rule file ATOZ.ZRF, which starts up automatically when the batch file finishes.
Note: The script takes a while to run. A 6x6 board takes only a few seconds, a 8x8 board may take a couple of minutes, and the 10x10 board may take a half an hour. You've been warned.