After Dell dropped the puzzles ... crossword puzzle editor for the New York Times and author of a line of Sudoku puzzle books. “You have to be focused to be a good Sudoku solver, because ...

And Amazon .com offers nearly 200 sudoku books ... U.S. in the 1970s. A puzzle called Number Place, with basically the same premise, appeared in a magazine published by Dell.

American Howard Garns in 1979 invented sudoku as we know it, and published it originally as a puzzle in Dell Magazines with the name "Numbers in Place." Maki Kaji of Japan then published the grid ...

A public transport novice, I found it hard to focus on books or articles, for fear I’d miss my stop. But sudoku allowed my mind to easily toggle back and forth between the puzzle page and the ...