Notes by E. Schiffers.

1. 3…Bb4 This move is justly condemned by theory; it would not be advantageous to exchange the Bishop for the Queen's Knight, and still less so to retreat.
2. 18.Rae1 After 18.... Kt to R 5, would follow 19. R to K 3, threatening Kt to B 5.
3. 19.Re5 A pretty but unsound sacrifice; Black might have played 19.... Kt x R; 20. P x R, Q x P, and White would simply have lost the exchange. (See diagram.)
4. 24.Qg4 Black inadvertently touched the Pawn at K B 3, which compelled the loss of the Queen. [This was one of the questions which came before the Committee, but they decided that, although the touching may have been unintentional, Herr Marco was quite within his rights, if not even bound, to insist on the Pawn being taken, especially as the touching of it was probably an outcome of mental workings, for its capture with the Knight was at first sight very strong.—Ed.]