Although he used it four times, drawing all fours games in short order, I still consider this a difficult variation for Black. Smyslov had to display a great deal of resourcefulness in order to equalise, and his opponents did not always exploit their opportunities to the fullest. After this tournament, neither Smyslov nor the other masters made much further use of this defence, so it has disappeared from practice.a. In which game from Dortmund did it appear?
b. Who wrote the passage?
c. Where was it written?
[Chessbase Dortmund round reports: 1, 2, 3, 4, 5]