FREE ONLINE GAMES PLAYER

Use the cursor keys or the mouse to position the red highlight on the square you want to modify. Press 1-9 to fill the square with that digit or 0 (or SPACE) to erase. The "Clear" button erases the entire board (click on it twice if you wish to remove both a computed solution and the clue numbers). Thanks a lot to Karl Hornnell at javaonthebrain.com for this.