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
Petrosian would never have beaten me if he had played like that in 1963.
Mikhail Botvinnik 1966
As chess players, Kasparov and Karpov have exhausted themselves, the people began to forget them and they are trying to attract attention with their inadequate statements.
Kirsan Ilyumzhinov 2010
Now, at 51, in my life I have reach the stage between the middlegame and the endgame. But I don’t have the feeling that I am in the endgame already.
Boris Spassky 1988 NIC
When I saw MVL’s position, it is like a football match where you’re 3:0 down, with two minutes to go and you’re down to 10 men!
Lev Aronian 2016
There was a moment at the beginning when the machines were a positive, but lately we’ve being passing to the other extreme. Now it seems that a move isn’t good unless the machine says so.
Veselin Topalov 2016