Tree of motifs
After an unexpected twist, we all of a sudden have a tree of motifs to hang our knowledge on in stead of a coatrack. At the moment, I have stumbled on three motifs. One of the things we have to do, is hanging the coat hooks we already discovered on their rightful place in the tree of motifs. But first, let's see if we can discover what the rationale is behind the motifs. Rationale behind the geometry motif Geometry is everything that concerns the lines of attack. Theoretically is should be possible to have a tactic with no straight line of attack whatsoever. Yet that is highly unlikely though. Usually, a combination exists of more tactical themes. One theme, take for instance a knight fork, can be without a straight line of attack, but 3 or 4 themes combined cannot. Because 4 of the 5 duplo attacks consist totally of themes with straight lines (pin, skewer, roentgen, discovered attack), while a lot of the double attacks are based on a straight line of attack either. So if you ...