It contains a healthy mixture of chess patterns and psychology. Both should be useful if you face a chess master over the board. If you play without them however you will lose.
In addition you may find some humor ;)
Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, CY, D, DK, EW, E, FIN, F, GR, IRL, I, L, M, NL, P, S, SLO, SK ausgeliefert werden.