This App presents and contextualizes the history of Sudoku. In 1979, American Howard Garns created a puzzle called "Number Place" for a magazine, using Latin Quadro logic, but with smaller subgrids (3x3). In the 1980s, the game arrived in Japan through Nikoli magazine, which renamed it "Sudoku" (short for "Sūji wa dokushin ni kagiru" = "numbers must be unique"). The Japanese eliminated the need for calculations, focusing only on pure logic, which made it popular. In this application, the user will learn the entire history and will have challenges with grids (4x4), with 3 different themes. In addition to the historical context, the App presents fundamental tips for solving challenges and with the possibility of checking your successes.