The Principle of One Diagonal
For a bishop it is always important to have all jobs on one and the same diagonal.
Then it can not fall into zugzwang and not be diverted:
The Cut-off
This technique is extremely important in rook endgames as without the king
the forces miss a strong fighting unit:
The Back Door
Storming a knight's fortress is often far from easy:

Karsten Müller in ChessBase Magazine
Do you like these lessons? There are plenty more by internationally renowned
endgame expert Dr Karsten Müller in ChessBase Magazine, where you will
also find openings articles and surveys, tactics, and of course annotations
by the world's top grandmasters.
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to go to the ChessBase Magazine page
Apart from his regular columns and video lectures in ChessBase Magazine there
is a whole series of training DVDs by Karsten Müller, which are bestsellers
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