Dr. Sudoku is a sudoku video game for the Game Boy Advance. It comes with 1000 sudoku puzzles to solve and a snazzy soundtrack to listen to. It also has a mode where you can create your own sudoku puzzles, which can be saved and stored on the cartridge.
For this run, g0goTBC and Lightmopp elect to solve all 1000 puzzles in record time. Consideration is put not only into the quickest way to solve each puzzle, but also the least number of times needed to move the cursor in order to solve the puzzle. For details on how this is achieved and the computer science behind it, you can read the authors' notes.