GYNNY  Now after the little repair it works fine as expected! Lot of fun in less than 1 MB!!

Thank you David!  
(Version 5.7)

MTCOBRA  Downloaded the program to download folder. It was 'sudokumat.jar' Clicked to run it and got the usual, 'downloaded from the Internet - do you want to open it?' When I opened it, it reported that the java jar sudolumat.jar could not be launched. What am I missing?  
(Version 5.7)

JOHN LOCKE  Thanks to the developer for this enjoyable little ap. Teachers will like it because you can create your own puzzles at whatever level(s) you choose, and can even opt to have an answer sheet.

If you are English-speaking, you will want to go under the options menu (on the ap itself, not on your computer's regular menu bar) then under Select Language, choose English. (It is also available in German.) This will assure that help menus come up in your preferred language.

The menu bar is rather old fashioned looking, but that does not affect play.

There is a nice feature for those of us who like the print larger--just enlarge the frame and all the print gets proportionally larger.

The candidates (possible solutions) button is a nice touch. I wish it were an option for printing as well.

Overall a very nice ap.  
(Version 5.4)