The audience is seated, the reporters have their notebooks ready and pixel Nikola Tesla is about to show the world his greatest coil. There is just one problem: the generator has failed, and the coil will only charge if someone does the calculations by hand, very quickly. The newspapers are already calling it Spark Sums.
Every correct answer adds another ring of charge to the coil, every streak makes it hum louder and a single wrong answer drains it with a sad fizzle. Charge it all the way and a giant spark leaps across the stage and lights up the whole city. Fall short, and the newspapers will have to wait for tomorrow.
