[yayachiken]

The detection of solutions seems a bit buggy.

In the fourth task "Add the angles BAC and EDF on the given line GH", I drew the circles DF and EF in, then connected E and F with a line segment, and it told me that I solved the problem without touching the points GH at all...

Edit: In fact, simply drawing the line from E to F is already enough.

Edit 2: Similar when doing the "Perpendicular to line in a point not on a line": Drawing any perpendicular is enough, even if it is not going through that point.

[sdkgames]

Thanks for the feedback. I will check the win conditions.