A term used in chess composition or chess solving. It means that every piece must contribute towards the solution, through not necessarily in the main line.
ECHESSPEDIA
Quotes of the Day
Chess politic is not my dream, but I will be happy when we start to change things and organize a better chess life in the world.
Anatoly Karpov 2010
When I am in the USSR, I have the feeling that every tram conductor plays chess better than I do.
Hans Ree
Chess should not become an obsession. Otherwise there’s a danger that you will slide off into a parallel world, that you lose your sense of reality, get lost in the infinite cosmos of the game. You become crazy.
Magnus Carlsen 2010
I can’t tell the difference between 100 zillion positions and 497 zillion positions, but if it helped Deep Blue play stronger, so be it. I was looking forward to Deep Blue boldly going where no man had gone before. 1997″
Vishy Anand
He has weaknesses, as everyone does, but far fewer than those around him.
Veselin Topalov 2016