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
What am I doing in this pool of piranhas?
Nigel Short 2017
It’s always better to sacrifice your opponent’s men
Savielly Tartakower
With the modern computer age, there are some new ideas, but the principles are basically the same… I try not to over-focus on preparation.
Magnus Carlsen 2012
I may be an old lion, but I can still bite someone’s hand off if he puts it in my mouth
Wilhelm Steinitz
Drawing general conclusions about your main weaknesses can provide a great stimulus to further growth.
Alexander Kotov