Claude Shannon was an American mathematician and engineer best known as the founder of information theory, the mathematical framework, built around the concept of the bit, that underlies all modern digital communication and computing. While at Bell Labs he laid the groundwork for how information is measured, compressed, and transmitted.
Shannon was also an early thinker about machine intelligence. In March 1950 the Philosophical Magazine published his paper “Programming a Computer for Playing Chess,” preserved by the Computer History Museum, which is widely regarded as the first technical paper on computer chess. In it he described representing chess positions, scoring them with an evaluation function, and choosing moves by looking ahead through a minimax search, and he discussed strategies for pruning the enormous number of possibilities. These ideas anticipated the design of game-playing programs for decades.
Shannon’s chess work connected directly to the broader question of whether machines could be made to reason. It influenced the early artificial intelligence community and the long line of game-playing systems that ran from his proposal through Deep Blue and beyond.