Two missiles speed directly toward each other, one at 9,000 miles per hour and the other at 21,000 miles per hour. They start ...

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What’s a 11-letter concept shared by crossword puzzles and ... of fully solved words?” writes the University of Oldenburg’s Alexander Hartmann in a recent paper published in Physical Review ...

I call them problems because of the puzzle’s title, “Word Problems,” and because each ... considering where this puzzle is appearing): [New York x paper] solves to PRODUCT OF THE TIMES.

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In his paper, Hartmann writes that he came to the idea of a percolation model for word puzzles while working on one himself. After reaching a certain point in a puzzle, he found himself unable to ...

According to his paper ... puzzles in 2016. He factored in how a puzzle's solvability is affected by the interactions between the structure of the puzzle's cells (squares) and word difficulty ...