Hey, I just played a go game where my opponent and me did't knew wether white is dead or alive. It, as we think, doesn't have two eyes but black cant take the stones either. It also doesnt looke like a seki. Can you please teach two beginners what the situation exactly is?
White is alive. There is nothing black can do to prevent the capture of the single stone inside the group. That gives white the second eye. He already has one to the left. Under the rules, it is not necessary to actually capture the stone. It is just removed at the end of the game.
Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).
The White group is alive, the Black stone is dead.
You can verify this because, even if White never defends the White group, Black cannot capture it. OTOH, even if Black defends the Black stone, White can capture it.
May I suggest that you play by area scoring rules, which counts both stones and territory. With those rules it is easy to resolve questions of life and death by play. The AGA rules are area rules. See http://senseis.xmp.net/?AGARules
The Adkins Principle: At some point, doesn't thinking have to go on?
— Winona Adkins
What nobody yet mentioned: the white group DOES have two eyes. Look again. The left one has just one point and the right one has been poked in the eye by B, but to no avail, as others have said.
“The only difference between me and a madman is that I’m not mad.” — Salvador Dali
Ike, as others explained, White is alive with one eye at (a) and the second eye at the greyed area, including the dead stone:
$$ $$ O . . . . . O . . X X O X . . . | $$ . . . . . . . X X . X O . X . . | $$ . . . . . . X . . . X O . . . . | $$ . . . . . . . X X X O X X X . . | $$ . . . . . . . X X O O O X O . . | $$ . . . . X X X O X X X O O X X . | $$ X X . X X O O O X . X O O O X . | $$ O X X O O O ? O O X X O X X . . | $$ . . X O a O B ? O X O O O X . . | $$ . X . X O O ? O O O O . X X . . | $$ ---------------------------------
[go]$$ $$ O . . . . . O . . X X O X . . . | $$ . . . . . . . X X . X O . X . . | $$ . . . . . . X . . . X O . . . . | $$ . . . . . . . X X X O X X X . . | $$ . . . . . . . X X O O O X O . . | $$ . . . . X X X O X X X O O X X . | $$ X X . X X O O O X . X O O O X . | $$ O X X O O O ? O O X X O X X . . | $$ . . X O a O B ? O X O O O X . . | $$ . X . X O O ? O O O O . X X . . | $$ ---------------------------------[/go]
Click the "quote" button on EdLee's post and you will see the code.
Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).
Black failed to take into account the eye at "a". If not for that eye, then yes, Black could kill white (I think).
EdLee wrote:Ike, as others explained, White is alive with one eye at (a) and the second eye at the greyed area, including the dead stone:
$$ $$ O . . . . . O . . X X O X . . . | $$ . . . . . . . X X . X O . X . . | $$ . . . . . . X . . . X O . . . . | $$ . . . . . . . X X X O X X X . . | $$ . . . . . . . X X O O O X O . . | $$ . . . . X X X O X X X O O X X . | $$ X X . X X O O O X . X O O O X . | $$ O X X O O O ? O O X X O X X . . | $$ . . X O a O B ? O X O O O X . . | $$ . X . X O O ? O O O O . X X . . | $$ ---------------------------------
[go]$$ $$ O . . . . . O . . X X O X . . . | $$ . . . . . . . X X . X O . X . . | $$ . . . . . . X . . . X O . . . . | $$ . . . . . . . X X X O X X X . . | $$ . . . . . . . X X O O O X O . . | $$ . . . . X X X O X X X O O X X . | $$ X X . X X O O O X . X O O O X . | $$ O X X O O O ? O O X X O X X . . | $$ . . X O a O B ? O X O O O X . . | $$ . X . X O O ? O O O O . X X . . | $$ ---------------------------------[/go]
tynan wrote:Black failed to take into account the eye at "a". If not for that eye, then yes, Black could kill white (I think).
Yes, that shape with that black stone in the middle is a dead shape. There's no way to make two eyes from that eye space after black plays in the centre.
Sente is a move which takes/holds the initiative, requires the opponent to respond, or however you prefer to put it (or can cause damage to your opponent if they tenuki), while gote is the opposite.
In this context though I think it's just the number of posts you've made
stone:
