TOKYO — Goro Hasegawa, the Japanese man credited with creating the Othello board game, has died. He was 83. Mr. Hasegawa died after a lengthy illness Monday in his home in Kashiwa, a Tokyo suburb, ...

Anybody who has played tic-tac-toe has probably worked out that the game can always be drawn, provided neither player makes a mistake. Indeed, it is straightforward to create an algorithm that ...