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America's Highway Numbering System Is Hiding A Giant Math Puzzle

Believe it or not, highway numbers actually make sense. Here's the logic behind odd and even routes, and why the system isn't ...
Scientific American

Math Puzzle: Sudoku Surprise

The rules of Sudoku dictate that every row, column and 3×3 bolded box in the completed grid must contain the digits 1 through 9 exactly once. A surprising fact emerges from these simple rules. In ...

If You Score At Least 14/20 Without Using A Pen, You’re A Number Crunching Machine

The ancient game of Sudoku has been played for centuries… Right? Some might think so, but it’s actually fairly young! The ...

NYT Pips Answers Today (October 28, 2025): Check Clues and Hints for Easy, Medium, and Hard Puzzles

Get the NYT Pips puzzle hints and answers for October 28, 2025, including Easy, Medium, and Hard levels. Keep your winning ...