SuperBrain, the timed brain teaser game

If you have the time, and can make quick decisions, this game is for you. Arrange four colors in the proper sequence to match a hidden pattern and you win the game. Your guess is scored with white representing the right color but in the wrong place, or by black representing the right color in the right place. The location of the scoring colors does not correspond with the location of your guesses, so you'll have to figure out which scores relate to which guesses.

This game was written by Joe Pearson as a teaching exercise, and to show how a game could be written without using any images.