"Jumping across the centre line"
In football, the area around the center line is usually a hazard-free space. But in chess, when a knight crosses the centre line โ i.e. if it jumps from his own half of the playing field to that of the opponent โ then it "usually sends a clear attack signal", writes Oliver Reeh in his tactics section in ChessBase Magazin #211. His collection of tasks in the new edition includes 38 games, which are peppered with many training questions. Attacking knights play an important role in al...
Source: chessbase.com