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.

Don Somatilake · Icarian Member

It is simple for this man to get out the trouble. All he has to do is take one by one disks turn it up side down and lay it away from the original pile. He should count while doing this and stop doing it when the count is exactly 129. Then his new pile and old remaining pile will have same number of red sides facing up!