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I installed Drago (along with a couple engines) today and am quite impressed with it thus far. My problem now is that I can't seem to figure out how to install problems for study. The menu bar mentions databases but doesn't give any clue as to what those databases consist of or where they can be found. I have several hundred Sgt files but no idea how to make Dragon access them.
To work problems in guess mode, you have first to open (File>Open menu) a SGF file containing problems. Let's try with easy.sgf in Drago install folder.
Now use Solve>Solve problems menu. Keep default settings and press OK. You have entered a solving session of 10 problems. The Solve menu gives access to some related commands including Hint, Free mode and Cancel. Remember the help file is intended to be as clear and useful as possible.
Note also the solving mode may work also on folders containing SGF files with each a single problem. Just use File>Open folder.