Damezumari Trouble.

Do you know what a ダメ詰まり ( damezumari ) is? Damezumari (also known as 수부족,subujok) is an igo term, means shortage of liberty.

An example of damezumari

Sometimes, damezumari can be really tricky. When someone think that one group is alive, be aware of damezumari.

Here's some example of damezumari mistake:
http://www.go4go.net/v2/modules/collection/sgfview.php?id=16228
A mistake of damezumari by Yashiro Kumiko.

http://www.go4go.net/v2/modules/collection/sgfview.php?id=10828
A mistake by Nakano Yasuhiro.

I remember that in Hikaru no Go, Tsutsui won from Kaio player, due to a misread of damezumari by the Kaio player, but I ndon't know the game record.

Tobi and Hiraki

There are many terms in go, and somewhat there are some terms, that seem similiar, but different. One of them is hiraki and tobi.

Maybe you have known the difference, but some people haven't. So, let see the difference.
Tobi is a japanese word, actually mean 'to jump'. In igo, tobi really means 'to jump', since it is used to jump outside (to the center).

The squared stone is example of tobi

Hiraki is similiar to tobi, but there is a difference. Hiraki is also "a jump", but not to outside. It is a jump in the same vertical line or we can call it moving at the side.

The squared stone is example of hiraki

Niken biraki is usually used to make live.

The squared stone is niken biraki example

Igo's term is, sometimes, complicated, but I found it that it's more interesting to use the terms while discussing ;)