diff --git a/generate_rules.py b/generate_rules.py
index c92602e..5a0bae4 100644
--- a/generate_rules.py
+++ b/generate_rules.py
@@ -221,8 +221,11 @@ for workgroup in workgroups:
             rules += f':- schedule({workgroup.id}, TIMESLOT, _), timeslot(TIMESLOT, ORDER, _, _, _), ORDER >= {first_timeslot}, ORDER <= {last_timeslot}.\n'
 
 rules += "pool_schedule(ROOM) :- schedule(_,_,ROOM), pool(ROOM).\n"\
-        "poolpen(T) :- T = {pool_schedule(_)}.\n"\
-        "#minimize { T : poolpen(T) }.\n" \
+"poolpen(T) :- T = {pool_schedule(_)}.\n"\
+"otherroomsametrack(AK1, AK2) :- ak(AK1,_, TRACK, _,_,_), schedule(AK1, _, ROOM1), ak(AK2,_, TRACK, _,_,_), schedule(AK2, _, ROOM2), ROOM1 != ROOM2.\n"\
+"otherroomsametrackpen(T) :- T = {otherroomsametrack(_, _)}.\n"\
+"finalpen(T) :- poolpen(P),otherroomsametrackpen(O), T = P+O.\n"\
+"#minimize { T : finalpen(T) }.\n"\
          "#show schedule/3."
 
 #######################
@@ -238,6 +241,7 @@ process = ['clingo', output_file_name, '--outf=2']
 
 # run subprocess, not sure, if busy-waiting..
 completed_process = subprocess.run(process, universal_newlines=True, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
+
 output = completed_process.stdout
 
 open('solver_output.json', 'w').write(output)