One trick to build a good defense is put your both Knight at
the center of the board so your Knight can defend 8 blocks, otherwise, if your
both knight were placed on both side of the board, your knight can defend only
4 blocks. Another trick to maintain your defense strong is to keep your pieces
supporting each other, and don't make a "double pawn" structure until
you make a good defense. If you keep your king protected, then your enemy
cannot defeat you easily.
-simple tricks in playing chess