What began as a simple game of wizarding chess turned out to be the greatest wizarding duel the Magically Fragile Senior Citizens Center had ever seen. Albus Dumbledore and Gandalf the very Grey (as nicknamed by his friends in the center due to his age) had a dispute when Dumbledore wanted a "takeback." Gandalf wouldn't allow it and thus the battle began.
"You'll never beat me with that puny little wand! I graduated from a wand to a staff when I was sixteen years old!" exclaimed Gandalf.
"Oh yeah! At least I didn't get midgets to do my dirty work!" retorted Dumbledore.
"Oh that's funny, because I recall you doing exactly that! You got Harry to find the sorcerer's stone, and seeing as he was barely five foot at the time..."
"Oh, so now you're making fun of the plot? Thankfully Harry Potter didn't revolve around a piece of jewelry."
"That 'piece of jewelry' was more powerful than you could possibly comprehend!"
And they both lifted up their weapons to strike, simultaneously spraining their backs. They both gave up, and although there were no spells throw, it is still the best duel at the center, because it was the only duel.