Obit watch: January 17, 2017.

Eugene Cernan, Gemini 9, Apollo 10, and Apollo 17 astronaut. NYT. NASA.

Hans Berliner, master chess player and prominent developer of early game playing computers (such as HiTech and BKG 9.8.)

Mr. Berliner was an expert at correspondence chess, in which moves can be sent by postcard or, more recently, over the internet. Players have days to think about each move, and games usually last months or even years. When Mr. Berliner won the Fifth World Correspondence Chess Championship, the final began on April Fools’ Day in 1965 and did not end until three years later.

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