Restrict choice list in repeat select_one question

[ARIF_AZAD_KHAN]

For single select it is possible to restrict duplicate selection in repeat group. Have a look the discussion:

Duplicate value in repeat group question

Ooh, this is another super fun question! I love these puzzle forms. @khantaung you have the right idea but the tricky thing is considering all of the previously-selected choices no matter how many repeats there are. Take a look at the form here for a solution that I believe should work for any number of choices and any number of repeats.