You can always use it things that are not critical for the game to work; and a good coder would make it in a separate class/container so most possible bugs are isolated as well.
In the chess example the most importan thing its not for the machine to win (or lose); is so the user feels its not the same game they already played; or -dare I say- think that the enemy is "learning"
In the chess example the most importan thing its not for the machine to win (or lose); is so the user feels its not the same game they already played; or -dare I say- think that the enemy is "learning"