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 Post subject: Re: Knotwilg's practice
Post #201 Posted: Wed Jan 20, 2021 2:38 pm 
Gosei
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Playing one game a day and review it seems to pay off. I may just have played the best game in my life.

OK it was a handicap game but soon I increased the 20+ advantage to 40 and kept it there or better.

In particular I feel like I did a good job of applying ijime.


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 Post subject: Re: Knotwilg's practice
Post #202 Posted: Thu Jan 21, 2021 6:03 pm 
Gosei
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Online playing schedule: UTC 18:00 - 22:00
Games 11-20, biggest mistakes

1) playing slow moves (7)
small connections 5
staying low i/o cutting (joseki)
live small in gote

2) missed opportunities (4)
omit sente shape
not exploiting aji 3

3) bad fighting, cutting, killing (6)
leave the fight for no reason
missing the fight
wrong cut
cut small scale
kill i/o connecting, allowing bullying
unnecessary invasion

4) technique/shape (9)
allowing hane at the head of 2
cutting in bad shape 2
missing vital point in whole position 3
bad shape 2

5) reading (5)
wrong choice in crosscut
bad reading
L&D mistake
failure to kill
no need to sacrifice


So slow moves and bad shape remain the big issues

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 Post subject: Re: Knotwilg's practice
Post #203 Posted: Fri Jan 22, 2021 7:43 am 
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How's it going on OGS? I think reaching 2D there might be harder than KGS.

Exploring OGS, I fooled around with a 1 kyu computer account there for a few games - and I think its a bit stronger than 1k KGS (at least in even games).

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 Post subject: Re: Knotwilg's practice
Post #204 Posted: Fri Jan 22, 2021 9:19 am 
Gosei
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dust wrote:
How's it going on OGS? I think reaching 2D there might be harder than KGS.

Exploring OGS, I fooled around with a 1 kyu computer account there for a few games - and I think its a bit stronger than 1k KGS (at least in even games).


I think the level is at leat 2 grades apart. As a KGS 2d I'm not yet at the rank limit of my current capability, as a OGS 1k I'm often struggling. An OGS 3k is still a tough opponent, who'll take advantage of my errors. A KGS 3k is easy meat for me.

This is why a stable KGS 3d and OGS 1d are kind of equivalent objectives, the former possibly being even easier.

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 Post subject: Re: Knotwilg's practice
Post #205 Posted: Fri Jan 22, 2021 9:20 am 
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Yes, KGS ranks are weaker than OGS ranks, especially in the kyu range. This was discussed here: https://lifein19x19.com/viewtopic.php?p=262667#p262667

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 Post subject: Re: Knotwilg's practice
Post #206 Posted: Sun Feb 14, 2021 4:04 am 
Gosei
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Rank: KGS 2d OGS 1d Fox 4d
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Online playing schedule: UTC 18:00 - 22:00
45 days into 2021 and 45 games played, I reached 3d. That's one. Now I have to confirm.

I can of course continue on the same rhythm, including daily reading training, but I'd like to do something extra:
- play a particular opening consistently
- review 3d games and get confidence I can beat them
- stabilize and play good endgame
- practice reducing moyos
- ...

The result of consistently playing and reviewing games really shows:
http://www.gokgs.com/graphPage.jsp?user=Artevelde


This post by Knotwilg was liked by 3 people: Bill Spight, ez4u, jlt
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 Post subject: Re: Knotwilg's practice
Post #207 Posted: Wed Mar 10, 2021 2:15 am 
Gosei
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60+ games into 2021 and stalling, at least my level on OGS has dropped again. I have the impression OGS ranks are deflating again.

Persistent review with AI seems to have me play in general a better opening (often leading in the opening).
In a few games I managed to leave big one eyed groups unprotected and not over-defend (with a slonection for example) and win the capturing race from the opponent's attempt to kill it. But in general I lose my games due to wrong choices in that regard, leaving weak groups unprotected. So that's an effect of "learning" I guess.

I keep struggling with invasions and reductions, finding it hard to create resilient shapes that withstand subsequent attack.

Covered 170 Hitachi problems which is not much but at least I do them on an almost daily basis

Studied invasion patterns with Baduk Doctor. His lessons on middle game patterns are probably giving me the right information to find more stability in my middle game but they beg repetition.

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 Post subject: Re: Knotwilg's practice
Post #208 Posted: Wed Mar 10, 2021 4:06 am 
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I also lost one half stone on OGS (was weak 2k, now strong 3k). May be statistical noise though.

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 Post subject: Re: Knotwilg's practice
Post #209 Posted: Fri Mar 26, 2021 6:00 am 
Gosei
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Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
Click Here To Show Diagram Code
[go]$$ Mistake 1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . 2 . . . . . |
$$ | . . . . O . O . O . X X . X O O O O . |
$$ | . . O O X O O X O . O X X O O X O . O |
$$ | . . O X X X X X . O O O X X O X O O X |
$$ | . . . . . . . O . O O X X . X X X X X |
$$ | . . O O X . . . O X O O O X . . . . . |
$$ | . . . . X . . X X X X 1 X . . . . . . |
$$ | . . . O X . . . . . . . . . . . . . . |
$$ | . . . O X . . . . . . O . X . X X X . |
$$ | . . . O X . . . . X X O . . . X O O . |
$$ | . . O X X . . . X O O . . X X O O . . |
$$ | . . O O X . . . X X O O . O O . . . . |
$$ | . O . . . . . . X O O . . . . . . . . |
$$ | . O X X . . . . . X X O . . . . O . . |
$$ | . O O X . . . . . X O . . . . X O . . |
$$ | X O X O . . . . . X . O . O O O . O . |
$$ | . X X X X . . . . X O O X . X X O . O |
$$ | . . . . . . X X X O . O X . X . X O . |
$$ | . . . . . . X O O O O . . . . X X O . |
$$ ---------------------------------------[/go]


:w2: in response to :b1: is a mistake, losing 10 points. Why?

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 Post subject: Re: Knotwilg's practice
Post #210 Posted: Fri Mar 26, 2021 6:39 am 
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Not sure I get it in the right order.

Click Here To Show Diagram Code
[go]$$ Mistake 1
$$ ---------------------------------------
$$ | . . . . . . . 4 9 0 . . . 2 . . . . . |
$$ | . . . . O . O 3 O 8 X X . X O O O O . |
$$ | . . O O X O O X O 7 O X X O O X O . O |
$$ | . . O X X X X X 5 O O O X X O X O O X |
$$ | . . . . . . . O 6 O O X X . X X X X X |
$$ | . . O O X . . . O X O O O X . . . . . |
$$ | . . . . X . . X X X X 1 X . . . . . . |
$$ | . . . O X . . . . . . . . . . . . . . |
$$ | . . . O X . . . . . . O . X . X X X . |
$$ | . . . O X . . . . X X O . . . X O O . |
$$ | . . O X X . . . X O O . . X X O O . . |
$$ | . . O O X . . . X X O O . O O . . . . |
$$ | . O . . . . . . X O O . . . . . . . . |
$$ | . O X X . . . . . X X O . . . . O . . |
$$ | . O O X . . . . . X O . . . . X O . . |
$$ | X O X O . . . . . X . O . O O O . O . |
$$ | . X X X X . . . . X O O X . X X O . O |
$$ | . . . . . . X X X O . O X . X . X O . |
$$ | . . . . . . X O O O O . . . . X X O . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Bm11
$$ ---------------------------------------
$$ | . . . . . 1 2 O 6 O 7 . . O . . . . . |
$$ | . . . 9 O 8 O X O O X X . X O O O O . |
$$ | . . O O X O O X O 4 O X X O O X O . O |
$$ | . . O X X X X X X O O O X X O X O O X |
$$ | . . . . . . 3 O O O O X X . X X X X X |
$$ | . . O O X . . 5 O X O O O X . . . . . |
$$ | . . . . X . . X X X X X X . . . . . . |
$$ | . . . O X . . . . . . . . . . . . . . |
$$ | . . . O X . . . . . . O . X . X X X . |
$$ | . . . O X . . . . X X O . . . X O O . |
$$ | . . O X X . . . X O O . . X X O O . . |
$$ | . . O O X . . . X X O O . O O . . . . |
$$ | . O . . . . . . X O O . . . . . . . . |
$$ | . O X X . . . . . X X O . . . . O . . |
$$ | . O O X . . . . . X O . . . . X O . . |
$$ | X O X O . . . . . X . O . O O O . O . |
$$ | . X X X X . . . . X O O X . X X O . O |
$$ | . . . . . . X X X O . O X . X . X O . |
$$ | . . . . . . X O O O O . . . . X X O . |
$$ ---------------------------------------[/go]


So White should sacrifice 2 stones.


This post by jlt was liked by 2 people: Bill Spight, Knotwilg
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 Post subject: Re: Knotwilg's practice
Post #211 Posted: Fri Mar 26, 2021 3:53 pm 
Gosei
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Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
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Online playing schedule: UTC 18:00 - 22:00
More of these in https://senseis.xmp.net/?DieterVerhofst ... OfMistakes

They contain 3 mistakes each of my last 3 games (will add more) which either lost big in terms of winning percentage or points, usually both. It's instructive to see that these big swings still occur in the middle game or early endgame, occasionally late in the endgame and then due to bad reading, losing a group or having to sacrifice a tail. Opening mistakes occur too but typically range in the 1-2 points department. Mistakes in choosing the bigger boundary play rarely matter either.

This means improving technique (move selection in combat) and reading will still make the big difference for me and I assume most players at my level (1-2 dan).

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 Post subject: Re: Knotwilg's practice
Post #212 Posted: Mon Sep 06, 2021 4:18 pm 
Gosei
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Rank: KGS 2d OGS 1d Fox 4d
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OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
I thought I'd post a game where I was happy with myself :)


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 Post subject: Re: Knotwilg's practice
Post #213 Posted: Fri Sep 10, 2021 6:02 pm 
Lives with ko

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IGS: kvasir
I noticed that it was not actually a killing move, but still a very good one.

Click Here To Show Diagram Code
[go]$$W
$$ +---------------------------------------+
$$ . . . . O . O . . . |
$$ . . X O O O X X O . |
$$ X X . X O X O O O . |
$$ O X . X O X X X X . |
$$ O O O O X X . 2 1 6 |
$$ . . . X O . O 3 4 . |
$$ . . X O O . 8 X 5 . |
$$ . . O . . . 9 7 0 . |
$$ . . . . . . X . . . |
$$ , . . . . . . . . . |
$$ . . . . . . . . . . |[/go]


Click Here To Show Diagram Code
[go]$$W
$$ +---------------------------------------+
$$ . . . . O . O . . . |
$$ . . X O O O X X O . |
$$ X X . X O X O O O . |
$$ O X . X O X X X X . |
$$ O O O O X X . X . X |
$$ . . . X O . O O X . |
$$ . . X O O 1 . 4 O 2 |
$$ . . O . . . O O X . |
$$ . . . . . . X 3 . . |
$$ , . . . . . . . . . |
$$ . . . . . . . . . . |[/go]


If white resists it is less good for white.

Click Here To Show Diagram Code
[go]$$W
$$ +---------------------------------------+
$$ . . . . O . O . . . |
$$ . . X O O O X X O . |
$$ X X . X O X O O O . |
$$ O X . X O X X X X . |
$$ O O O O X X . X . X |
$$ . . . X O 3 O O X 8 |
$$ . . X O O 2 X X 9 1 |
$$ . . O . . 4 O O X 6 |
$$ . . . . . 7 X 5 . . |
$$ , . . . . . . . 0 . |
$$ . . . . . . . . . . |[/go]


This post by kvasir was liked by: Knotwilg
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 Post subject: Re: Knotwilg's practice
Post #214 Posted: Thu Sep 16, 2021 5:57 am 
Gosei
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Location: Ghent, Belgium
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Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
Click Here To Show Diagram Code
[go]$$W
$$ +-------------------+
$$ . . . . O . O . . . |
$$ . . X O O O X X O . |
$$ X X . X O X O O O . |
$$ O X . X O X X X X 8 |
$$ O O O O X X . 2 1 5 |
$$ . . . X O . O 3 4 6 |
$$ . . X O O . 0 X 7 . |
$$ . . O . . . . 9 . . |
$$ . . . . . . X . . . |
$$ , . . . . . . . . . |
$$ . . . . . . . . . . |[/go]


How about this?

Click Here To Show Diagram Code
[go]$$W
$$ +-------------------+
$$ . . . . O . O . . . |
$$ . . X O O O X X O . |
$$ X X . X O X O O O . |
$$ O X . X O X X X X 8 |
$$ O O O O X X . 2 1 5 |
$$ . . . X O 7 O 3 4 6 |
$$ . . X O O . 6 X . . |
$$ . . O . . . . . . . |
$$ . . . . . . X . . . |
$$ , . . . . . . . . . |
$$ . . . . . . . . . . |[/go]


I guess this is the answer

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 Post subject: Re: Knotwilg's practice
Post #215 Posted: Thu Sep 16, 2021 3:52 pm 
Lives with ko

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Maybe there was a problem with your second diagram? I think you intent this, which looks right to me.

Click Here To Show Diagram Code
[go]$$W
$$ +-------------------+
$$ . . . . O . O . . . |
$$ . . X O O O X X O . |
$$ X X . X O X O O O . |
$$ O X . X O X X X X 8 |
$$ O O O O X X . 2 1 5 |
$$ . . . X O 7 O 3 4 . |
$$ . . X O O . 6 X . . |
$$ . . O . . . . . . . |
$$ . . . . . . X . . . |
$$ , . . . . . . . . . |
$$ . . . . . . . . . . |[/go]



and if white tries harder, for example.

Click Here To Show Diagram Code
[go]$$W
$$ +-------------------+
$$ . . . . O . O . . . |
$$ . . X O O O X X O . |
$$ X X . X O X O O O . |
$$ O X . X O X X X X X |
$$ O O O O X X . X O O |
$$ . . . X O O O O X 2 |
$$ . . X O O . X X 1 . |
$$ . . O . . . 6 5 3 0 |
$$ . . . . . . X 7 4 . |
$$ , . . . . . . 8 9 . |
$$ . . . . . . . . . . |[/go]

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 Post subject: Re: Knotwilg's practice
Post #216 Posted: Thu Sep 16, 2021 4:04 pm 
Gosei
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Posts: 1930
Location: Ghent, Belgium
Liked others: 292
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Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
(last diagrams posted were indeed correct - I made a mistake)

Taking another course now, I've checked my last 25 games on OGS. I won 16 and lost 9. The remarkable finding is that I was leading in the opening on 23/25 occasions. In 5/25 I took that lead straight into victory. In the other 11 victories there was a swing in the lead once or twice (exceptionally more) and I took it back, or those 2 times I trailed in the opening I swung it into my favor. In the 9 losses, 5 times my opponent took my lead away from the middle game in 1 swing and 3 times in 2 swings.

If we take this as a representative sample, I can say I'm almost always better in the opening (23/25), allow the lead to be taken away in the middle game more often than not (20/23), but half of those times (9/20) I lose the game the other half I take it back.

This means I should not invest so much in my opening and can count on fighting spirit later in the game, but should pay more attention to the early middle game.

Another interpretation is that I play the opening more or less like AI does, fairly territorial with emphasis on the corners, but fail to mimic the way AI handles the influence my opponents usually get. That corresponds to an impression I have always had, which is I'm not good at dealing with opponent moyos, when they form. I could now take two approaches: improve that, or switch back to more balanced or even influence taking openings and avoid the burden of dealing with moyos.

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 Post subject: Re: Knotwilg's practice
Post #217 Posted: Fri Oct 01, 2021 2:37 pm 
Gosei
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Posts: 1930
Location: Ghent, Belgium
Liked others: 292
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Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
While I'm still completing my collection of mistakes at https://senseis.xmp.net/?DieterVerhofst ... OfMistakes

Next the plan is to play 10 games without making any https://senseis.xmp.net/?Slonection

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