If you don’t know the answer, you can ask the system to provide you the answer by the square or reveal the entire puzzle. You can validate your entries by the square or reveal the solution of the entire puzzle. Check guess when entered (on by default): As you work through the puzzle, the system will give you feedback if the solution is correct or incorrect. Show timer (on by default): Allows you to time how quickly you solve the puzzle. As you play, use the play/pause button to start/stop the time. You can play the puzzle with a virtual pencil and all your entries display in a different color so you may differentiate between your guesses and actual answers. If you’d like to play puzzles published in the past, simply choose the date you wish using the archives.