"Puzzle-Mix" splits in the following categories:

"Boulder Dash Only" (30 Levels) - is limited  to only a few 
classic elements in order to present as much as possible of 
original Boulder Dash.

"Boulder Dash Soko"(10 Levels) combines Boulder Dash- 
and Sokoban-Elements.  

In "BD-JUE" (20 Levels) I present especially some of my
own Custom elements (see "Elements Info"). But you don't 
have to learn very much with regard to the behaviour of 
the new elements.

Everything is self-instructional and easy to understand. 
Sometimes I had to rebuild normal R&D elements (as CEs)  
so that a rock can interact correctly with an elevator 
for example).
