Flash Puzzle
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Preview Picture of Andrew Lamonica's Flash Puzzle

Here is a clock I made for my IS386 Class. There are three levels of difficulty. An interesting feature of the middle difficulty puzzle (4x4) is that you can solve the problem with any set of clicks on the top row. In other words, there are a large number of solutions to the 4x4 puzzle and every possible top row combination is represented in at least one.