|Sally Simpson: The Question appears to be what position did Yasser see in the room with Bronstein and the stunned Geller.|
Informator 49 (game 301) is this game and it gives the move 20.h4
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An 'N' (new move)
However in INF 48 (Game 370) Browne himself annotates the game Wolff vs Browne, 1989 where the same position is reached and Browne gives some analysis saying 20.h4!? is an interesting idea.
So the move that popped into Bronstein's head when he woke up had infact been mentioned as a possibility by his opponent Walter Browne.
In Browne analysis to the Wolff game Browne suggests here:
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That Black plays 21...Bxf5. In the game he runs against his own analysis and plays 21...Kh7.
So what is going on?
In 'Sorcerers Apprentice' Bronstein says Browne himself gave him a copy of a magazine with the Wolff game in it. Bronstein looked at it and says he discovered that 21..Bxf5 invited a very strong attack.
This is Plan A from Browne giving Bronstein a copy of the game in a magazine knowing he is bound to spot the flaw when he has infact a new move up his sleeve. 21...Kh7.
Now it all goes crazy (if you have not seen the vid link above do so now, it's rather good. and come back, I'll still be here.)
Why, if you have a move ready to bust an opening variation do you invite a fellow countryman of the opponent you are about to play it against to your room and show him what you intend to do. (apparently Geller plays his part well in this sham act.)
Did Bronstein suspect Browne was trying to trap him by giving him the magazine and invited Yasser to his room before the game expecting Yasser to tell Walter Browne just to let him know the ploy had worked.
Browne arrives 'a puffing and a panting' (for effect) reaches move 21 and again (for effect) let's 16 minutes pass and plays 21...Kh7.
Bronstein is now looking at 21..Kh7 and wondering if Yasser told Browne. (apparently not)
No matter, the position is teeming with ideas, Bronstein uncorks 23.Qh2!! (the exclaims are Bronstein's who adds in 'Sorcerer's Apprentice' this is the refutation he was looking for. ) and Gotcha Back!
So did Bronstein discover Browne's better move 21...Kh7 and wanted Browne to go there (thus the Yasser invite) so he could play 22.Qh2!!
This is turning out to be a wonderful story.