well spotted on the CPU -- i hadn't noticed that. it's because i'm animating the piece captures now (and it seems to be animating an empty capture too...). i can make this more efficient, at the least.
1) Can the graphical editor copy whole branches inside the graf? That would be a huge help in creating problems (pun is not intended). :)
2) There should be sort of a stop mark inside the problem tree. If player hits this move, - the try is forfeited, but then he can follow the tree to learn why. This feature would be greatly appreciated by beginners, while stronger players would not be able to exploit "roll back".
the tree view behaves strange. Sometimes its very fat (all the space on the right of the problem) sometimes its very narrow (about one move is visible) In that narrow case i cannot scroll to the left.
Imagine it like this:
You see the last move (the very right in the tree) and cannot scroll to the left since the scrollbar already is at the left side...
i use firefox 2.0 and blackdown java 1.4.2 on ubuntu linux