A text-based game of 3D Tic-Tac-Toe against a computer opponent. Originally, the game printed out the game board on teletype paper. It was later updated to include a visual display of the game board.
Strachey's program inspired Arthur Samuel to develop his own checkers game in 1952 for the IBM 701 and although the IBM 701 machine on which he developed his Samuel Checkers program was among the most powerful computers of its time, its memory was not sufficient to game out every possible outcome of each move. Samuel got around this limitation by introducing what is now called “alpha-beta pruning,” a scoring system that allowed the program to evaluate the likelihood of winning from certain positions without playing them out to the end of the game. Like a human player, Samuel Checkers looked as many moves ahead as it could and made its decisions from there.
A game of draughts (a.k.a. checkers) written for the Ferranti Mark 1 computer by Christopher Strachey at the University of Manchester between 1951 and 1952. In the summer of 1952, the program was able to "play a complete game of Draughts at a reasonable speed".
Robot Chess is an early chess game in which the user can play against an AI. The AI is only powerful enough to compute "mate-in-two" problems and thus the game didn't represent a full game of chess. Players would enter moves of the Ferranti Mark 1 and the computer would print out the response move. The simulation ignores some chess rules such as en passant, promotion and castling.