
... was the final of a strategically highly interesting game between Boris Spassky and Lajos Portisch in a Closed Sicilian, which Mihail Marin analyses in depth in his column in ChessBase Magazine #198!
Do you like these lessons? There are plenty more by tactic expert Oliver Reeh in ChessBase Magazine, where you will also find openings articles and surveys, endgames, and of course annotations by the world's top grandmasters.