The interference of one black piece by another like moving one on the same line (if the pieces are on different lines, it is a Holzhausen).
ECHESSPEDIA
Quotes of the Day
One of the most important things in chess is pattern recognition: the ability to recognise typical themes and images on the board, characteristics of a position and their consequences.
Magnus Carlsen 2010
16. “By all means examine the games of the great chess players, but don’t swallow them whole. Their games are valuable not for their separate moves, but for their vision of chess, their way of thinking.
Anatoly Karpov
Agon was just sold for one pound and the reputation of Ilyumzhinov’s FIDE is worth even less than that.
Garry Kasparov 2014
You can’t look too annoyed or they’ll look for the mistake you’ve made. A lot of the time it’s about looking for these opportunities and if you give them a clue, the good players will find it.
Magnus Carlsen 2016
When I am White I win because I am White. When I am Black I win because I am Bogoljubov.
Efim Bogoljubov