I've solved the riddle of Kramnik's blindfold
Kramnik usually wears glasses, the artist has painted a blindfold on
Kramnik so he will not be wearing glasses in the completed picture.
So people wearing glasses in the picture are important!
That leaves us with 4 players wearing glasses. Botvinnik, Euwe, Anand and Smyslov.
That spells out BEAS.
The source of the river Beas starts in the Himalayas.
The artist wants us to organise an expedition to the source of the Beas.
There we will find the book that will unlock the mysteries
of Chess and also, probably, the secret of Everlasting Life.
Phew, I'm glad I sorted that out, It's been bugging me for days.