Can I get to help in generating this fet. Any help would be appreciated.
I tried your file and it solved in 19 seconds with FET 7.9.1. This was my first attempt. I tried to generate multiple timetables and up until now I got no solution. Maybe your timetable is difficult... and I was lucky. I attach the .fet file of the generated timetable.
Vangelis.
I have done some changes and have gotten it to generate a bit more frequently. Thanks anyways.
Your initial file solves best if you generate multiple 1000 timetables with a time limit (for restart) of 2 minutes. I obtained 6 solutions in about 10 minutes this way.