No adding or subtracting, just pure logic and reasoning. Sudoku, anyone? There s really nothing like it, said Jim Fisher, assistant manager of Barnes & Noble Booksellers. The challenging puzzles can ...

Some are easy to figure out, like the clues in a newspaper’s Monday crossword, a beginner’s Sudoku grid or cryptogram. Others are more difficult. But one puzzle that has proved impossible to solve, ...

It seems like everyone with Sudoku fever has the same story: They stumble upon it accidentally in some book or newspaper, play it once or twice to test their skill and ride the slippery slope into ...

In airports and coffeehouses, college classrooms and breakfast nooks, people across the nation are furiously scribbling numbers inside tiny squares. They are, they will admit, obsessed, addicted, ...

Daily puzzlers would be quick to tell you that sudoku, Wordle’s mathematical cousin, is not as easy as it looks. The small grid, found often next to a word scramble or comic strip in a print newspaper ...