I have been looking through the e-mails from some of your viewers and I found one that caught my attention very much. It was the one from Mr. Ed Sandifer, he asked three questions about Euler's history. I did some research and I found the answers:

1.- There are no games recorded because nobody did annotate them.

2.- Euler's Chess teacher in Berlin around 1750 was a man of the
     German aristocracy, his name is unknown.

3.- The dinner guest when "conversation turned to Chess ..."?, was
     Euler's teacher.

I hope you can e-mail this info to Mr. Sandifer.

Rogger Cervera.

chess-poster.com