Last night's BBC Radio 4 'Friday Play' was about Fischer v Spassky 1972.

It's still available for playback for a few days via the Radio Player option at
bbc.co.uk - navigate yourself to Radio, Radio 4, and it'll be under the 'more'
option somewhere - I misremember the exact navigation but it's there to be
found. It lasts for just under one hour. (The first few seconds of the
playback are in fact the closing seconds of the previous programme, so wait a
few seconds for the play)

Paul Buswell