Aimed at: Sudoku devotees who take to the road or who can't get enough of the puzzle craze between newspaper deliveries. Cost: Retail price is $39.99, but I've seen it listed on Web sites as low as ...

Divyang “Dave” Pandit, an engineer-author whose Sudoku guide was featured in the Sept. 15 Travel section, will present his puzzle-solving strategies Jan. 7 at the Sunnyvale Public Library, 665 W.

Since its rise to popularity in 2005, the number game Sudoku has produced an overwhelming array of addicts. And last week, when National Geographic Games’s new online game, Sudoku Traveler: China, hit ...