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.


Digital Mayhem

As a temp working for MegaCorp, you're constantly facing difficult challenges. Specifically boredom. Last week you mastered winning minesweeper with your monitor turned off.

Today you've discovered you can pop the keys off your keyboard with a ruler. After upgrading to a Dvorak key pattern, you begin focusing on the numeric keypad:

This week's task will be to figure out how to re-arrange the numbers so that every row, column, and diagonal add up to the same number.

For an additional challenge, see how few steps you can do it in, by swapping only two keys at a time.

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