I haven't played the game seriously in about 45 years. I got too involved in it and decided to end it. I got chessmaster on impulse. Chessmaster 2000 had a weak endgame. That was corrected with 3000.
I once owned a "Boris." It was fun, but the company went out of business, I think. Still got it in the garage. When home computers started to get popular, the software greatly improved. Hardly a week goes by, that I don't sit down and try my hand against CM 6000 in a 30 minute game.
Chess keeps the mind alert. It is mental gymnastics.