Contest
Playing under special scoring rules, Saki plays the next game while trying to keep her plus/minus zero score and winning at the same time, but cannot do both with the special rules. However, when the special rules are removed, Saki ended up winning the game, therefore disallowing her from keeping the zero score. Nodoka is dejected after losing since before Saki told her that she hated mahjong and despite that won, but Saki tells her that playing with her was fun. Saki thinks about what Nodoka said, and even tells her father that she wants to one day play again with her mother and sister like they used to before they left to be professional mahjong players. The next day, Saki joins the club, saying that she wants to play more and win against Nodoka.
Aired 13/04/2009EP 2 - Contest

Saki
Miyanaga Saki is a first year high school girl whose family would get angry if she won the family mahjong games. But losing would also have its consequences. Because of this she develops a new way of playing that allows her to stay on the thin line between winning and losing, the plus/minus zero score, an almost impossible score. In a game that relies mainly on luck, the plus/minus zero score is harder than winning, but Saki can achieve this every time.
Having always hated the game, her friend from middle school, Suga Kyotoro, forces her to play in the schools mahjong club. Her developed skill and superhuman luck has made her a worthy mahjong opponent, even to the middle school's national mahjong champion.
(Source: Anime News Network, edited)