Hi Teyko,

Thanks for your comments. I have quite a lot of work on at the moment, but I'll try and have a look at your idea at some point this week.

I think (and I may be wrong, I'll have to check the actual game score) that you may have the wrong position. I am pretty sure that in the Gufeld game White did not play Rhg1 (which would leave the h4-pawn undefended) but rather Rdg1, which means that the d7-knight is then vulnerable to tactics against White's king on the d-file (otherwise why would white recapture on d2 with the king?).

However your point is still a good one - i.e. if White plays Rhg1 instead of Rdg1 then Black will need to go his own way as the Gufeld trick no longer works (i.e. because the d7-knight is defended).

Thanks again,

Ed