Hello all, and especially the historians out the

On page 183 of Pergamon Press' 1984 edition of Botvinnik's "Half a
Century of Chess", I find the following curious remark:

"...But I very much wanted to win this game [game four of the 1953
match in Moscow between Botvinnik and Taimanov to break the tie from
the USSR championship - zdrakec], which practically assured me of the
title of USSR champion. This was furthered, I would say, by the almost
passionate atmosphere of the match, due to the fact that during our
game in the championship [tournament, not the current match - zdrakec]
a rather unpleasant dispute took place...."

The tournament in question was the 20th USSR Championship, held in
Moscow in 1952. Can anybody fill in the details of the dispute between
Botvinnik and Taimanov?

Regards,
zdrakec