Odd and even weeks

[cheungkc]

My school have a timetable system of odd and even weeks. We call them week A and week B. Each week has 5 days from Monday to Friday.
As a convention, lessons in week A and B need not be the same, but are preferred to be similar.
For example, if there is a Math lesson for class 1A in the 1st period in week A, there should be (but not necessarily 100% required) another Math lesson for class 1A in the 1st period in week B.

May I know how I should set the constraints for this requirement? I am thinking to use a 10-day timetable, using day 1 and 2 for Monday of week A and B and so on...

Thanks a lot in advance for your help!

[Liviu Lalescu]

Please see:

http://lalescu.ro/liviu/fet/forum/index.php?topic=351.0

and

http://lalescu.ro/liviu/fet/forum/index.php?topic=1695.0

and come back on this topic with further questions.