jlt
Gosei
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by jlt Sun Mar 28, 2021 8:35 am
$$Wcm24 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm24 Black Captures: 0 White Captures: 0
hailthorn011
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by hailthorn011 Sun Mar 28, 2021 10:20 am
$$Wcm24 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm24 Black Captures: 0 White Captures: 0
Slava Ukraini!
jlt
Gosei
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by jlt Sun Mar 28, 2021 10:39 am
$$Wcm26 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm26 Black Captures: 0 White Captures: 0
He doesn't want the corner? Then I take it. I think it's pretty big, not only in terms of points, but also because this secures my group D16 so that I only have one weak group on the board, while making Black's group B14 not completely alive.
Another option would have been to play like this
$$Wcm26
Click Here To Show Diagram Code [go]$$Wcm26
This would have enclosed Black while loosely connecting my two white groups and building a huge central influence. Again this is hard to decide but my impression was that the corner was too big and should be taken. But since White didn't play at E12, it's quite possible that Black will play there next, in order to separate the two white groups.
hailthorn011
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by hailthorn011 Sun Mar 28, 2021 10:56 am
$$Wcm26 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm26 Black Captures: 0 White Captures: 0
Slava Ukraini!
jlt
Gosei
Posts: 1786 Joined: Wed Dec 14, 2016 3:59 amGD Posts: 0Has thanked: 185 times Been thanked: 495 times
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by jlt Sun Mar 28, 2021 12:22 pm
$$Wcm28 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm28 Black Captures: 0 White Captures: 0
hailthorn011
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by hailthorn011 Mon Mar 29, 2021 3:18 pm
$$Wcm28 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm28 Black Captures: 0 White Captures: 0
Slava Ukraini!
dfan
Gosei
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by dfan Mon Mar 29, 2021 4:09 pm
jlt
Gosei
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by jlt Mon Mar 29, 2021 11:32 pm
$$Wcm30 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm30 Black Captures: 0 White Captures: 0
As predicted a few moves earlier. The theory says that whenever Black has a 4-4 point and the two neighboring star points, White should invade at the 3-3 point because one of the stones (the marked stone in the diagram below) becomes inefficient:
$$Wcm30
Click Here To Show Diagram Code [go]$$Wcm30
He might also block in the other direction but I don't think he will, otherwise why did he play H2? Obviously he wants to make territory at the bottom.
Other points I considered, or that I may consider in the future:
"a" encloses Black, loosely connects two white groups and builds a strong influence.
"b": a corner approach is one of the standard moves to play against sanrensei, so it can't be bad.
"c" prevents Black C2 and puts a little more pressure on the black group, but feels a bit premature, I have invested too many stones in the area already.
"d" aims at separating the lower left black group from its friends, but doesn't work at all, not only because in some variation a laddered white stone will run into
but also because my central white group is not strong enough and I would probably end up with two weak groups.
hailthorn011
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by hailthorn011 Tue Mar 30, 2021 11:20 am
$$Wcm30 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm30 Black Captures: 0 White Captures: 0
Slava Ukraini!
jlt
Gosei
Posts: 1786 Joined: Wed Dec 14, 2016 3:59 amGD Posts: 0Has thanked: 185 times Been thanked: 495 times
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by jlt Tue Mar 30, 2021 11:43 am
$$Wcm32 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm32 Black Captures: 0 White Captures: 0
As expected. Only one possible answer. If Black wants sente he can play like this:
$$Wcm32
Click Here To Show Diagram Code [go]$$Wcm32
hailthorn011
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by hailthorn011 Thu Apr 01, 2021 1:00 pm
$$Wcm32 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm32 Black Captures: 0 White Captures: 0
Hey just a heads up. Work has gotten super busy so I'm going to have to take a brief hiatus. My apologies.
Slava Ukraini!
jlt
Gosei
Posts: 1786 Joined: Wed Dec 14, 2016 3:59 amGD Posts: 0Has thanked: 185 times Been thanked: 495 times
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by jlt Thu Apr 01, 2021 1:39 pm
$$Wcm34 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm34 Black Captures: 0 White Captures: 0
As expected. I could also consider to extend but I don't like the following variation, I feel Black gets too much outside potential:
$$Wcm34
Click Here To Show Diagram Code [go]$$Wcm34
This one doesn't feel satisfactory either:
$$Wcm34
Click Here To Show Diagram Code [go]$$Wcm34$$Wcm44
Click Here To Show Diagram Code [go]$$Wcm44
White gets sente, but I am not sure White has enough ko threats.
hailthorn011
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by hailthorn011 Tue Apr 20, 2021 8:33 pm
Super sorry! The hiatus lasted a bit longer than I planned but I will be making my move tomorrow and I will be back to playing consistently.
Slava Ukraini!
hailthorn011
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by hailthorn011 Thu Apr 22, 2021 8:09 am
$$Wcm34 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm34 Black Captures: 0 White Captures: 0
Slava Ukraini!
jlt
Gosei
Posts: 1786 Joined: Wed Dec 14, 2016 3:59 amGD Posts: 0Has thanked: 185 times Been thanked: 495 times
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by jlt Thu Apr 22, 2021 12:35 pm
$$Wcm36 Black Captures: 0 White Captures: 0
Click Here To Show Diagram Code [go]$$Wcm36 Black Captures: 0 White Captures: 0
This could be a continuation.
$$Wcm36
Click Here To Show Diagram Code [go]$$Wcm36
Instead of the shoulder hit, I could have invaded but I thought it would be premature because I get a weakish group that Black can attack with profit.
$$Wcm36
Click Here To Show Diagram Code [go]$$Wcm36
Other big points to be considered for later: connecting two groups (a), getting into the center (b), reduction (c), threatening to enter the bottom territory (d), removing the threat of B17 while weakening the black group (e).
but also because my central white group is not strong enough and I would probably end up with two weak groups.