The 64-Square Madhouse - Fritz Leiber

A machine of blinking lights and smelling of ozone is entered into a Grand Master chess tournament. One of the first of those things called computers. Would it be shamed by human genius or would it out think these human prodigies through sheer calculating power? Well, the machine was not perfect. It could be tricked. It could make mistakes. And—it could learn! (summary by phil c and the publisher)