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13 x 9 game 01
PageType: OngoingGame
This is an ongoing game on an experimental 13x9 goban. You are invited to submit your next move: Click on Edit page and replace the intersection (where you want to place your next move) with an increased integer number. Please identify yourself by adding a short comment to the move log. After every 10th move a duplication of the current game situation is required: In this case please copy and paste the current board and replace odd numbers by 'X' (for black stones), even numbers by 'O' (for white stones).
HolIgor: Black concedes the ko because white has two ko-threats at the bottom and two at the top while black has two maximum. The result: Black 27+1 = 20, White 23+3 + 6.5 = 32.5. White wins by 5.5 moku.
HolIgor: As the result of the game is clear and nobody wants to play I finish it myself. If you think that either side could do better feel free to correct.
HolIgor:
Klaus: Which Ko are you talking of?
HolIgor: Well, when black makes an atari on a stone in the center, white would prevent black's cut. This creates a ko. White will be very mean and try to get the last move before filling the ko and then will win the ko as well.
Klaus: maybe your Quest for tedomari ist to frightening for me at this point, so I simply add a move first, and search for the perfect sequence later.... (
HolIgor: As it is clear that White is ahead at moment (counting komi) the problem is just to play perfect yose. I am never content with the yose I play in my games. This is a good opportunity to practice, count the values of the moves, try to apply the theory and so on.
HolIgor:
Klaus: According to my comments below, I think
HolIgor:
Ben Axelrod:
Klaus: I am not good at counting yose, but I want to try to judge the connection on the upper right.
+8 points (for White, circled) White gote
1 captured white Stone and 6 Points circeled +5 points Black sente
It seems to be unreasonable big to ignore
1 captured white Stone and 2 Points circeled +1 but the capture was gote for black (This as well resembles Corner12ConnectionValue, if HolIgor wants to do so, all comments might be moved to his HolIgor explores yose page)
So the difference between a double gote play is /points, makeing the 3.5 points miai counting you mentioned. So the game continuation was the best orthodox play.
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If we compare this with the game, white is about 2,5 points bigger than in the game but black has sente. How much will this be worth?
What is the biggest move left? Maybe the next move of the actuall game will help to solve this.
Klaus: Isn't a move at b8 worth 5 Points?
Klaus: The alternativ
![]() But it might be even bigger! HolIgor: I corrected your statement above. The value of this move has been discussed here before. It is 2.66 miai counting if there is no threat to the life of the group. See Corner12ConnectionValue. Black might try to fight a ko but this is usually bad. Since black is behind in this game the ko option should be considered.
White can start a picnic Ko later and he is likely to win it! Whenever he connects at a, he treatens to capture the whole black group with the atari at b.
So it is a 5 point gote with a 2 point gote follow up, which we can approximate with a 6 point gote alltogether. Right?
HolIgor:
Agt:
HolIgor:
Frs:
HolIgor:
Frs:
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BenAxelrod: HolIgor: Did white lose anything?
Frs: Yes, one stone at B1.
HolIgor: PS: Is there komi?
frs:
ChessWhiz:
frs:
Agt:
Frs:
ChessWhiz:
BenAxelrod:
Agt:
BenAxelrod:
Klaus: So me and Frs switch sides again, and I turn out to move for the losing party!
Frs:
Ben Axelrod:
Frs:
Ben Axelrod:
Klaus:
Frs:
Frs:
Ben Axelrod:
Frs:
Frs:
Klaus:
Frs:
Ben Axelrod:
Frs:
Klaus:
David:
David: Why are Klaus and Frs playing both sides?
Klaus: Sorry, if that bothers you. I will stop that and stay on the white side.
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Frs: Because I always try to play the best move, no matter if I play Black or White (or both colors). In my opion, there is nothing wrong in switching sides, but -ok- I should have earlier stated the main intention of this game: To experiment a little with 13x9, and to watch how it develops when anyone is invited to submit the next move. You may play both colors, but please don't submit the next move if you have already submitted the last move.
Ben Axelrod:
Klaus:
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Frs: After
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Klaus: You might be right, Frs! However, I had a plan, playing
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Frs:
Klaus:
Frs:
Klaus:
Frs:
Klaus:
Klaus:
Frs:
Pedro:
Frs:
Pedro:
Frs:
Pedro:
Frs:
Pedro:
Frs: Securing the bottom right corner with a large knight's move at
incognito:
BIB:
Frs:
Pedro:
Frs:
Pedro: Game settings
Komi: 5.5
Black: whoever submits a move :) Game start: 2003-June-11 This is a copy of the living page "13 x 9 game 01" at Sensei's Library. ![]() |