Cheers, if you regulary watch teaching games or (even better) take lessons from MyMaster or so, please check out the latest preview (0.3.10pre2). I did quite some changes to observed teaching games. gGo now will keep branches which were created using undo as SGF variations. IGS itself does not support variations (like KGS does, if you know the KGS teaching mode), so the client has to emulate it somehow. This means, when you watch the teaching game and later save the game as SGF file, the SGF will include all branches including the comments, so you can later review the complete lesson. A drawback is, I disabled move navigation, so you can not move back to earlier moves in the original observed board window (too complex). However, you can open an edit board ("Edit game" button), where you can freely move through the game, so this should be a minor issue. The interface for the teacher is not changed, only the observers will keep the branches - not really needed for the teacher and would make things too complicated. This required quite some changes to the whole observe code, and I won't bet a cent it's completely bug-free, so I would appreciate if you could give it some testing. If you don't know where to get the preview releases, check the "Preview" link on the gGo webpage. Peter