The signs are all there. The seclusive behavior. The long, unexplained absences. The change in behavior. The lying. The stealing. The refusal to enter a 12-step program. The accelerated heartbeat when ...

Pens, pencils and a facility with numbers. Also helpful: earplugs, plushies, a water bottle, calming herbal oil and the occasional “wild bifurcation” (a.k.a. a wild guess). Competitors at the World ...

It is a pastime most pursue in solitude -- at the breakfast table, on a crowded bus or even at the office. But the Sudoku number puzzle made its foray into the arena of spectator sport this weekend at ...

A popular numerical puzzle "Sudoku" not only in Japan but also abroad. The number of hints to be placed at the beginning is often 20 to 30, and at the minimum, 17 things are confirmed, but there was ...

All the Latest Game Footage and Images from Sudoku - Premium Number Puzzle Sudoku for beginners and advanced players alike, with no ads, unlimited grids on or offline, 6 difficulty levels ranging from ...

Puzzled by the secret of the Sudoku? You're not alone; millions of people have tried their hand at the mathematical problem-solving game since it was first popularized in 1986 in Japan. The challenge ...

With the right Sudoku tips, tricks and strategies, you can ace the puzzle every time! Here's your chance to become a Sudoku pro. Whether you’re a total beginner with no clue at all as to how to solve ...

So, you ask, what’s with the ninja? He’s always taunting you on RedEye’s cover, talking smack and daring you to complete his silly little Sudoku number puzzle. (Don’t ever let him hear you call it ...

Forbes contributors publish independent expert analyses and insights. I write about physics, science, academia, and pop culture. One of the great things about doing this kind of workshop is getting to ...