적대탐색(Adversarial Search): http://www.aistudy.co.kr/heuristic/adversarial_search_nilsson.htm
The TicTacToe Machine(Delphi Implementation): http://www.delphiforfun.org/Programs/tic_tac_toc_machine.htm
A Menace Simulation(VB Implementation): http://www.adit.co.uk/html/menace_simulation.html
Menacing(Python Implementation): http://vysnu.com/log/2006/03/11/menacing-a-menace-emulator.html
MATCHBOX TIC-TAC-TOE(Basic Implementation): http://www.atarimagazines.com/v3n1/matchboxttt.html
Noughts and Crosses: http://www.adit.co.uk/html/noughts_and_crosses.html