“He doesn’t calculate equity. He’s just seeing it.” Perry Gartner, the president of the United States Backgammon Federation, put it this way: “Truthfully, out of the top sixty-four ...

He was 85. The cause was complications from Alzheimer’s disease, said his son, Perry Gartner. An MIT-trained engineer and Wall Street analyst, Mr. Gartner put an indelible stamp on the tech ...