Found this computer chess set that JM gave me back in the late 1970s. It's still immaculate and works well. It probably has less processing power than my door-bell but that was enough to make me struggle to beat it 30 odd years ago. It has eight levels of play and I do remember eventually winning at Level 8, after which it must have gone back in its box until now when my son's starting over at Level 1!
Even though there are probably wonderfully animated and instant response versions on-line nowadays there's something appealing about the buttons and old-fashioned beeps, not to mention the warm browns that would once have matched the sofa, cushions, carpets and curtains!