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Out of mind

Mr Padfield the mad puzzler

By Paul Broks   June 2004

My colleague was struggling with a logical conundrum and didn?t want to be outwitted by her gloating partner. Out of desperation, she emailed the entire department in search of a solution. I looked at the puzzle but couldn?t solve it, so carried on with what I was meant to be doing. I didn?t think about it for the rest of the day. But later, as I lay in bed, I rehearsed the scenario: ?You are alone in a room with three light switches. Downstairs there is a room with three lightbulbs, all initially off, but each connected and working. You…

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