From Tim Krabbe's site:

Anand - Krabbé, Amsterdam, September 1st 1991, clock blindsimul 5

Here he played 7.h3 in which, for lack of understanding, I presumed grandmaster depth. Until after the game, when Anand explained it. What I had not noticed was that the player beside me, against whom Anand had played 1.g3, had also used the New Yorker system, and had reached the same position, only with his bishop on g4. And Anand had forgotten which bishop was where in which game. 7.h3, in both games, was not so much a chess move, as a request for information.
    It made me think of a story. A grandmaster once played a 10-board blind simul somewhere. Knowing the ropes of blind simuls, he varied his games right from the start, maybe opening two with 1.e4, two with 1.d4, one with 1.b3, and so on. To his suprise, all of his opponents played 1...b6. On the second move, five of them played 2...Bb7, and the other five 2...Ba6. On the third, three of the five players who had played 2...Bb7 now played 3...Bc8 and the other two played 3...Ba6, while three of the five who had played 2...Ba6 now played 3...Bb7, and the other two 3...Bc8. On move 4, the grandmaster saw bishops everywhere. After move 5, he excused himself and went to the toilet where he was happy to find a window big enough to let him through.

LOL now that is good stuff!  I never thought of "teaming up" on the GM for simuls... pretty stealthy!  :)

I love stories like this, very funny. The ten opponents had obviously orchestrated their actions, not really fair against a blindfold opponent in my opinion. Thanks for posting.

Well in a recent school simul against one of the region's top players, we orchestrated that we would all play different first moves..