Oh, @tristancarax. You have no idea. When I did math problems in school, I always understood the concept but got lost in the numbers. In college I was a part-time cashier and not once did my drawer tally--this was before computerized checkout. My inaccuracy was so regular that the supervisors realized I was honest but very inept with numbers. Still, they wanted me to stay :)) So...yes a challenge :))
I hope your contest takes off. Even if we don't enjoy writing long sentences, it's good to take a different view of writing. Kind of turns it inside out.
Good luck with this!