This is a tool-assisted speedrun. For more information, see http://tasvideos.org/1734M.html
Brain Age (also known as Dr. Kawashima's Brain Training) is a puzzle game designed on the premise of exercising your brain. In this run, for example, the idea is to solve a series of simple mathematical puzzles.
And yet, the answers given... are not exactly what you'd expect.
The same author of the previous run brings you a set of 51 new ... answers, with extra time taken to provide you, the viewer, with the greatest possible attention to detail. Additionally, the increased detail provides a higher level of difficulty, to prevent the number recognition from checking the answer before the image is complete.
If you liked how the machine's drawing recognition system got abused in this movie, you must also check the troubles TAS brings the text recognition system (http://tasvideos.org/1248M.html) into.