Uhlmann/Schmidt: Open Files (Progress in Chess)The strategy and tactics associated with the open file are explained here clearly and comprehensivelyhow files are opened, blocked, occupied, and exploited as roads along which to invade the enemy position. A brief introduction lays the theoretical foundations and is followed by illustrative games, in all of which the open file is the dominant or deciding factor. In each game there is a pause at a key position where a clear verbal assessment is given;