Here is a sort description (brought to you by wikipedia):
Saki Miyanaga, a high school first-year student, hates mahjong because her family would always force her to play it and punish her regardless of the outcome of the game. Due to this, she learned how to keep her score at zero, neither winning nor losing, a skill said to be more difficult than actually consistently winning. However, her friend KyÅtarÅ from middle school, completely unaware of such circumstances, convinces her to visit the school's small mahjong club upon entering into high school. After the club discovers her ability, they recruit her permanently and convince her to win instead of breaking even. She easily does so with her skill and discovers a new love for mahjong. This leads the team to enter the prefecture's high school mahjong tournament with the goal of reaching the national high school competition.
you cant find chapters 27-55 online (as far as I know)
http://tenmanga.com/book/SAKI.html
1-19, 56-71 (19 and 56 are not in the right spot)
http://www.mangafox.com/manga/saki/
1-18, 56-71
http://www.otakuworks.com/series/1257/saki
1-26, 56-71
the only way to read the missing chapters, is to download.
you look them up via google.
look up
Saki-v06[Null].zip
Saki-v05[Null].zip
Saki-v04[Null].zip
Saki-v03[Null].zip
Saki-v02[Null].zip
Saki-v01[Null].zip
these 6 volumes contains chapters 1-50
chapter 51 if the start of volume 7 (contains chapters 51-55). Which is MIA at the moment. If I find the missing chapters, I will post a link here or something like that. If anyone can help please post. Chapters 51-55 are only the first part of volume 7.
Also
[color=red]Please discuss this manga here:[/color]
So far I love the manga. Its like Hikaru no Go, solely because its about a young person who either dislikes or hates a certain game and ends up being great at it.
The manga is interesting and makes me want to read more.
Also
it has Moe
and moe is always win.