One Late Thursday afternoon, Teri Polgar went to the grocery store. Roaming the air-conditioned aisles, she decided to make her specialty—a macaroni-and-cheese casserole—for dinner that night. Some might consider it more of a winter meal, not really suitable for the middle of July, but Teri liked it any time of year. And Bobby—well, Bobby was hardly aware of what season it was, or for that matter, what time of day. When she got home, she found her husband in front of a chessboard, deep in concentration. That in itself wasn’t unusual. But the board was set up on the kitchen table and her younger brother was sitting across from him. Two out-of-the-ordinary occurrences. Johnny grinned sheepishly when she walked in with her bag of groceries. “I came by for a quick visit and Bobby insisted on teaching me,” he explained. Bobby mumbled something, probably an acknowledgment of her presence. He often muttered to himself, lost in his own world of chess moves and strategies. To say her husband was a bit unconventional would be an understatement. Bobby Polgar was an international chess sensation, one of the top-ranked players in the world. “How’s it going?” Teri asked as she set the groceries on the counter. Johnny answered with a good-natured shrug. “Haven’t got a clue. Ask Bobby.” “Hi, sweetheart,” she said, moving to her husband’s side of the