Bki's study journal

Bki · Post by **Bki** » Mon May 18, 2015 3:57 am

Another win.

The result to :w52:

was, I think, about equal : I had more profit, but white had a little more potential on the top and bottom sides, and all groups were fairly safe.

Then I screwed up in the bottom right corner, but managed to get a ladder breaker through and salvage the situation by making a nice moyo on the right side. He invaded only after playing forcing move that made me strengthen it, so he died, and I won.

By the way, it's relaxing to play with the confidence coming from having read a sequence to the end (and seen it couldn't end badly for you).

Uberdude · Post by **Uberdude** » Mon May 18, 2015 5:10 am

One question, did you think about hane for 21?

Bki · Post by **Bki** » Mon May 18, 2015 5:26 am

Uberdude wrote:One question, did you think about hane for 21?

No... But now I wish I did, because it's a beautiful move.

Bki · Post by **Bki** » Tue May 19, 2015 2:53 am

Okay... That's the most embarrassing game I played in a while. I totally screwed up the top left corner, but managed to come back somewhat into the game, though not quite enough (:white: 207 might have been the losing move).

When I counted and found myself somewhat behind, and with few opportunity to came back. Then he started an extremely big ko, and I failed to get appropriate compensation ( :white:

247 should have been at :black:

250).

Then :white:

273 was just silly, but I didn't care anymore at that point.

Bki · Post by **Bki** » Tue May 19, 2015 4:43 am

Well, that was a little better. This one I won because my opponent didn't carefully re-read the ladder after a sequence I had played to break it. I'm not sure about the result in the lower right. The top left was fine, though it may have been better to take sente with :w32:

. The top right was maybe not optimally handled, but I got a very good result nevertheless. The bottom left ended the game.

Bki · Post by **Bki** » Wed May 20, 2015 2:44 am

Okay, this game has a very large difference in the score, but this was more due to one misread in a large stake fight than an all out disastrous game for me.

Well, I did try a disastrous invasion early on, but I think I got a good result in the multiples ko I followed. But then just when I was sure I could kill I was careless because one of the surrounding group was not alive, and I played in one of the worse possible way if I wanted it to have enough liberties...

More embarrassingly, I failed to play the right killing move.

Bki · Post by **Bki** » Wed May 20, 2015 10:31 am

Another game.

Bki · Post by **Bki** » Fri May 22, 2015 5:15 am

Played a lot of games today, but this one I think is more deserving of a review than the others... Because the others... Well, there was a handicap game where I got slaughtered because I didn't verify long enough on the move that let me die. There was that one game when my opponent died in gote...

Well, I might post some of those games later on if I find something interesting while reviewing them.

This game was decided by an overextension in a fight that allowed the opponent to cut me off. But I think I might have some chances had I played a very good endgame afterwards. Unfortunately, it didn't happen.

I'm also not totally satisfied with the bottom left corner. Also, I'm not sure whether what I played in the bottom right was the best choice. I think it's fine, but I also think I let white have an easy time, because I think the three space extension was a mistake.

Bki · Post by **Bki** » Sat May 23, 2015 8:22 am

Some thoughts...

I explored some 3-4, 1-space pincer variation earlier. Nowadays, on an empty board, I find myself playing the knight move more often, as a counter-pincer fit my style (and usually double as an extension from the other corner). Other pincers I have more varied answers, though I do like the double approach (and jumping then a counter pincer against the two space high).

I've been playing exclusively double 3-4 in those last game, usually enclosing with :b5:

when playing black. I'm not quite sure what's the best way to deal with this split, though.

Click Here To Show Diagram Code: [go]$$c Split $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 5 . . . . | $$ | . . . 2 . . . . . , . . . . . , 1 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . a . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , 6 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . b . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 4 . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . 3 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Should I make a checking extension at a? Then if he play a two space extension it induce enclosing the corner, but what if he answer at b? Split directly? Calmly answer in the corner, content to let him defend?

Or should I enclose with b instead, as it prevent a two space extension from this side?

Here is one of the game I played today :

Crawling on the second line starting with :b37:

made the game difficult for me. It certainly was premature to play there. Also, the cut at :black:

131 was an overplay and a big loss for me. I should have played Q15 (or maybe P15), protecting the side and threatening the cut, before protecting the group on the top side. G17 would have been huge.

Once again I've got the impression that I win most of my games because of my opponent's failure to properly punish my overplays rather than my own skill. This is really hard to feel satisfied with your wins for games like these. I guess it must be the jump in rank, as previous to that I felt that most of my game I somewhat deserved my wins.

SoDesuNe · Post by **SoDesuNe** » Sat May 23, 2015 8:55 am

Bki wrote:I've been playing exclusively double 3-4 in those last game, usually enclosing with :b5: when playing black. I'm not quite sure what's the best way to deal with this split, though.

$$c Split
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . a . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , 6 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . b . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------

Click Here To Show Diagram Code
[go]$$c Split $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 5 . . . . | $$ | . . . 2 . . . . . , . . . . . , 1 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . a . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , 6 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . b . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 4 . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . 3 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I usually take the second enclosure, let him make a two-space-extension and be satisfied that I got two enclosures and Sente.

Bki · Post by **Bki** » Tue May 26, 2015 5:53 am

Playing too much games doesn't help when it comes to reviewing them afterwards...

Lately, I usually get a good result in the opening, can usually more than hold my own during fights, but manage to make questionable strategics decisions during the middle game which lead to my loss.

I think this game is a good illustration. The game started with a taisha, which I think I handled fine (there's some things I should have done differently in the subsequent fighting, though).

But then come :b141:, which was played as it allowed me to cut at F11. Unfortunately, he could afford to sacrifice those four stones at the same time as getting the left side (compared to my wishful thinking, which was : cutting of those stone and me getting half that side, which would likely be enough for a win). And I stupidly answered his timesuji at :w146: instead of taking the side and the game.

Later on during the endgame, I counted, but forgot to consider his prisoners (but I did for my own) so I thought the game was close and so fought to the last 1/2 point ko.

skydyr · Post by **skydyr** » Tue May 26, 2015 7:23 am

For move 8 in the last game, did you consider responding to the taisha with O3? White's been playing high and loose for the most part, but it's not necessarily clear how he will proceed to turn that into territory at this stage of the game.

Bki · Post by **Bki** » Tue May 26, 2015 8:47 am

skydyr wrote:For move 8 in the last game, did you consider responding to the taisha with O3? White's been playing high and loose for the most part, but it's not necessarily clear how he will proceed to turn that into territory at this stage of the game.

Well, I actually considered briefly P3 instead, but I didn't like it because it made the right side big (it's the natural direction for my top right corner once I enclose) and let him have it.

And I'm the sort of player that welcome complication (though I would not seek them actively in a handicap game against a stronger player), so I would likely play the main line of the taisha anyway unless it was disadvantageous.

skydyr · Post by **skydyr** » Tue May 26, 2015 10:14 am

Bki wrote:
skydyr wrote:For move 8 in the last game, did you consider responding to the taisha with O3? White's been playing high and loose for the most part, but it's not necessarily clear how he will proceed to turn that into territory at this stage of the game.

Well, I actually considered briefly P3 instead, but I didn't like it because it made the right side big (it's the natural direction for my top right corner once I enclose) and let him have it.

And I'm the sort of player that welcome complication (though I would not seek them actively in a handicap game against a stronger player), so I would likely play the main line of the taisha anyway unless it was disadvantageous.

Well, arguably it (the main line) is disadvantageous here. White has close-ish support with the G4 group, while black has a low stone at R16. As a result, I think that fighting with multiple weak groups should favour white. More to the point, there is a time for all things. Complication is good when you are behind, and when you would otherwise be forced into an unfavourable position, but it can be a little like putting the game up to a coin toss. Uncomplicated is predictable, and predictable makes it easy to plan to build, maintain, and secure a lead.

Black does have the ladder, though, so perhaps this line would be interesting?

Click Here To Show Diagram Code: [go]$$c Many other choices possible for $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . 9 . . . . . . . . | $$ | . . . , . . . . . , . . . . . , X . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 6 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . 7 1 X O . . | $$ | . . . O . . O . . , . . 5 O X O O . . | $$ | . . . . . . . . . . . . . 3 2 X . . . | $$ | . . . . . . . . . . . . . . 4 8 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

White's moyo potential has been broken up, and white ends in gote. White's lower left enclosure is also facing a smaller side on the left and is somewhat neutralized by black's strong group.

Bki · Post by **Bki** » Wed May 27, 2015 4:46 am

skydyr wrote:
Bki wrote:
skydyr wrote:For move 8 in the last game, did you consider responding to the taisha with O3? White's been playing high and loose for the most part, but it's not necessarily clear how he will proceed to turn that into territory at this stage of the game.

Well, I actually considered briefly P3 instead, but I didn't like it because it made the right side big (it's the natural direction for my top right corner once I enclose) and let him have it.

And I'm the sort of player that welcome complication (though I would not seek them actively in a handicap game against a stronger player), so I would likely play the main line of the taisha anyway unless it was disadvantageous.

Well, arguably it (the main line) is disadvantageous here. White has close-ish support with the G4 group, while black has a low stone at R16. As a result, I think that fighting with multiple weak groups should favour white. More to the point, there is a time for all things. Complication is good when you are behind, and when you would otherwise be forced into an unfavourable position, but it can be a little like putting the game up to a coin toss. Uncomplicated is predictable, and predictable makes it easy to plan to build, maintain, and secure a lead.

Black does have the ladder, though, so perhaps this line would be interesting?
$$c Many other choices possible for
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . 9 . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , X . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 6 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . 7 1 X O . . |
$$ | . . . O . . O . . , . . 5 O X O O . . |
$$ | . . . . . . . . . . . . . 3 2 X . . . |
$$ | . . . . . . . . . . . . . . 4 8 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------

Click Here To Show Diagram Code
[go]$$c Many other choices possible for $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . 9 . . . . . . . . | $$ | . . . , . . . . . , . . . . . , X . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 6 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . 7 1 X O . . | $$ | . . . O . . O . . , . . 5 O X O O . . | $$ | . . . . . . . . . . . . . 3 2 X . . . | $$ | . . . . . . . . . . . . . . 4 8 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

White's moyo potential has been broken up, and white ends in gote. White's lower left enclosure is also facing a smaller side on the left and is somewhat neutralized by black's strong group.

Good points. I tend to underestimate the influences that groups relatively far away can have on the fighting.

That last variation was a good idea on this board. I will keep it in mind.

Apart from that... I received Grade Go Problems for Beginners 4, though I will first prioritize finishing 1001 L&D problems. Having solved the first sixth problems already, though, I think the difficulty will be adequate for my level.

Also, played another game today, and I'm quite happy with it. Obviously, there are quite a few moves that I now think were mistakes, but neither me nor my opponent played any outrageous blunder. And at the very least, I enjoy much more reviewing games like that.

Unfortunately, I forgot to save the comments I put on the sgf...

:b49:

: Clearly a mistake, I should have extended at least one more. If he defend the side, then I can turn and get the advantage in the centre. If he extend, then now I can play :b49:

, and the double hane is far less severe, as it also kill off his right side group.

:b53:

: I think I could have hane instead. He has to connect (if he atari, then I still have the double atari to escape), then I'm one space ahead compared to the game. He has a ko-lock, but it's not worrying as it kill of his side.

:black:

103 : Maybe one space narrower would have been better, considering white is quite strong on both side.

:black:

105 : Unpunished overplay (white should push and cut).

:black:

207 : Not sure if white should have resigned here. He can save his group (either by linking up or living locally) at the cost of letting me save the three dead stones, but afterwards the game is still close.

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