The Grey Labyrinth is a collection of puzzles, riddles, mind games, paradoxes and other intellectually challenging diversions. Related topics: puzzle games, logic puzzles, lateral thinking puzzles, philosophy, mind benders, brain teasers, word problems, conundrums, 3d puzzles, spatial reasoning, intelligence tests, mathematical diversions, paradoxes, physics problems, reasoning, math, science.


That's my name, Mr. Plow

Snow starts falling at some time before noon on a cold December morning. At noon a snowplow starts plowing a highway. At 1 pm the plow has advanced 2 miles, but it takes another 3 hours to do the next 2 miles. What time did it start to snow?

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