
What's this? Once I had selected my refreshment (500ml bottle of gaseosa, 2,75€) I took the tray to my table for a closer look.

Match of the Century, Fischer v Spassky, Karpov, Korchnoi, a bit of English and a bit of Spanish. And mostly German.

As far as I can see it reproduces some analysis of the Alekhine Variation of the Dutch Defence, in German (and in long algebraic, which I've not seen for a while).

In the boxed middle section, which I've reproduced on both the previous image and the next one, there's a game quoted from 1980 but all the other references - there's not many - seem to be from earlier.

So this raises the question - from where is the text taken?