Saki doesn't understand why she was taken to play mahjong but that's where Saki and Nodoka met. Nodoka wins but questions Saki's playing style so she asks for another game.
It's 'cause I'm a genius!
هذا لأنني عبقريّة
¡Es porque soy un genio!
C’est parce que 
je suis un génie !
È che sono un genio!
É porque sou um gênio!