Stuck over a D&D puzzle? Can't figure out what to do with that red gemstone? Here are five ways to solve a puzzle in D&D.

The strange behavior of electrons in high-temperature superconductors like cuprates has been a mystery for years. A new study ...

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The total value is represented by the digits in the tens and ones places of the number in column 3. This puzzle originally appeared in Spektrum der Wissenschaft and was reproduced with permission.

Embracing everything from riddles and logical conundrums to mathematical problems and optical illusions, he notes that "it ...

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Find answers to the latest online sudoku and crossword puzzles that were published in Network's local newspapers.