|Matov vs. Fischer (after 16. Na4)|
If we look at the above position, Matov just played (16. Na4) attacking Black's Queen. Fischer, instead of moving his Queen replied (16.___Nc4) counter-attacking White's Queen. If Black's Knight is taken by the Bishop; then Black's Queen will retake the Bishop attacking both the Rook at f1 and the Knight at a4. Fischer, eventually won a piece in this position and the game.