MARCH 2005

When the clocks spring forward the world is a lighter place. This month's puzzle is all about light. There are three switches in front of you that control three light bulbs in an isolated room. All switches are in the off position. You can turn any of the switches on or off, but you can't tamper with them. Once you leave the switch room you cannot re-enter. How can you find out which switch controls which bulb?