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 Post subject: Re: Uberdude's journal
Post #41 Posted: Fri Mar 31, 2017 9:28 am 
Oza

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So I'm coming to the end of the BIBA online study month. I've played 6 games (4 losses and 2 wins, including a surprising one against Benjamin D-G French 6d) and even did some of the homework problems (will try to finish them next month). The reviews from Blackie were good, but the teaching game was rather a missed opportunity as I suicided early.

I also played another European team game, which I ended up winning by half a point! Here's my synopsis:

Quote:
My game was against 4 dan Armel-David Wolff, who I'd met at the World Amateur last year. I thought the opening was slightly good for me once he didn't go for complications by pincering my bottom left approach and I invaded his dubious shape on the left side. Inspired by AlphaGo, I went for the kick and jump when he approached the top left, aiming to overconcentrate him on the side but he extended further on the 3rd line so I didn't get a chance to play the 5th line shoulder hit and he snuck in the corner and lived (for now) in sente which was a bit annoying. I took a big thick endgame move and grew my lower moyo, and he reduced it by aiming at an invasion. I answered in a thin but good endgame way, but maybe I should have ignored and split his right side (splitting groups was big and created powerful follow-ups) which he then fixed. He resisted my attempt to get a double sente endgame and attacked my left group: deciding discretion was the better part of valour I lived submissively. By now I was in overtime and lost of a lot of points when he broke into my lower side (I missed a tesuji to kill him due to his shortage of liberties from a bad push) and the game got uncomfortably close. There were a few minor ups and downs in the endgame but in the end I fortunately managed to squeeze out a half point win (after losing the final ko).




And Crazy Sensei analysis (it thought I did actually fall behind in middle-game which seems plausible, and then caught up in endgame): https://www.crazy-sensei.com/?lang=en&g ... ation=game

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 Post subject: Re: Uberdude's journal
Post #42 Posted: Tue May 02, 2017 2:09 am 
Oza

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Uberdude wrote:
So my goals are:
- at least play in if not win British Championship title match next year
- get 2400 rating
- get solid 5d KGS from non-blitz


Last weekend was the first stage of the British Championship and (having got permission from the boss to play) qualified for the next stage (8 player round robin Challengers' league) with 5 wins out of 6 which sounds good, but actually I played rather poorly and had easy opponents (all wins against people > 2 stones weaker) so am not particularly confident about the first goal above. I didn't beat any of the other 7 qualifiers (dhu did well and won the tournament with 6 wins and beat 5 of them, maybe he'll post soon) and lost to Andrew Kay (tried to have fun in the opening and lost early) so actually lost rating points despite 5/6 down to 2363 (meaning dhu overtakes me), so 2400 is a way off. Interestingly enough the 7 qualifiers are exactly the top 7 entrants by rating (excluding Walter Gregory 2d who hasn't played in 20 years so his grade is probably too high (though he did give Andrew Kay a decent fight) over Tim Hunt who was 10 points lower). And I've not played on KGS. So a rather unsatisfactory warm up for the Challengers' league, I'll need to play a lot better to do well in it.

P.S. one of my wins was against Sam Bithell 1k, a relatively new player from the Milton Keynes and Cambridge clubs. I had beaten him on 4 stones at the club recently, but failed to clinically kill him and he did well with 3 wins: it's for good experiences like this it's nice to let 1ks play in the Candidates.


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 Post subject: Re: Uberdude's journal
Post #43 Posted: Thu May 04, 2017 10:03 am 
Oza

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KGS: Uberdude 4d
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My 2nd game from Candidates (because it was broadcast and some people having trouble with sgf):



Game 3 against Andrew Kay, the only strong player I played in the tournament. Funnily enough also ended by resign at move 107, but really it was lost already at move 20. My decision making sucks.


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 Post subject: Re: Uberdude's journal
Post #44 Posted: Sun May 07, 2017 4:38 pm 
Dies with sente

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I added a few comments. For example, there were many better ways in kay's game, and he played overly aggressively.





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 Post subject: Re: Uberdude's journal
Post #45 Posted: Tue May 09, 2017 2:47 pm 
Dies in gote

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Uberdude wrote:
Game 3 against Andrew Kay, the only strong player I played in the tournament.

Andrew, in your game against Andrew Kay, if white :w98: play at N18, seems to me it's (W)eye vs (B)no eye and white at least get a favorable ko out of it?


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 Post subject: Re: Uberdude's journal
Post #46 Posted: Wed May 10, 2017 7:34 am 
Oza

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wolfking wrote:
Uberdude wrote:
Game 3 against Andrew Kay, the only strong player I played in the tournament.

Andrew, in your game against Andrew Kay, if white :w98: play at N18, seems to me it's (W)eye vs (B)no eye and white at least get a favorable ko out of it?

Good point, I was too emotional to look so far from his last move. :sad: I might not even have been in overtime, I can't recall. I did feel he played unnecessarily aggressively after my disastrous start and could have given me a chance in that fight, but as the game was bad for me I was mentally weak and expecting to lose so didn't try so hard to win, essentially playing out the resign. Andrew K on the other hand never gives up and fights hard to reverse games he is losing.

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 Post subject: Re: Uberdude's journal
Post #47 Posted: Thu May 11, 2017 8:28 am 
Dies in gote

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Uberdude wrote:
Good point, I was too emotional to look so far from his last move. :sad: I might not even have been in overtime, I can't recall. I did feel he played unnecessarily aggressively after my disastrous start and could have given me a chance in that fight, but as the game was bad for me I was mentally weak and expecting to lose so didn't try so hard to win, essentially playing out the resign. Andrew K on the other hand never gives up and fights hard to reverse games he is losing.

Yes this can happen even to the top pros! I especially remember the famous "early resignation" by Qian Yuping against Kobayashi Koichi when he was actually half point ahead. He was just too upset with some of his plays to objectively assess his position.

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 Post subject: Re: Uberdude's journal
Post #48 Posted: Tue May 16, 2017 10:01 am 
Oza

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KGS: Uberdude 4d
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Played the last Euro teams game of the season, lost to Alessandro Pace of Italy (who was top of BIBA group B). Opening felt good for me, but then did the classic endgame move you hope is sente that isn't in a fight. Some comments/variations in the sgf.

Quote:
I was happy with how the opening went, and played a shoulder hit I'd seen in a Lee Sedol game to counter his influence strategy. Once I played the last big opening point on the left he played a strange attachment underneath and rather than directly answering I went for a leaning attack. He then played a loose move (f7 rather than f8, afterwards he said it was misclick) which allowed me to clamp to get the side but instead I got carried away and played what was essentially an endgame move at e2 so he fixed the clamp problem in sente. He then played a sharp attachment which I answered submissively and couldn't break into his moyo due to his own clamp tesuji. By now I was in overtime and tried to reduce aiming at his bad aji, but my wall had a cutting point of its own and with just a few seconds per move I sacrificed a huge group to kill a smaller one of his with bad aji. Maybe I could have had a chance if I surrounded the centre and sacrificed the tail of my group, but I saved it and in doing so he saved his formerly dead group so I was miles behind but didn't have time to count so played it out and lost by 25 points.




One position/move I want to understand better is that below. Lee Sedol played the tiger mouth connection of :w1: and I did the same, rather than pole connection at a, or hanging connection at b. I can see how b emphasises centre thickness/shape (it's common for black to peep that cut later, or in my game he just cut and killed me a lot later) but does have the downside of some cutting aji starting with the black empty triangle at 1 or a. As white has made the marked slide for 3-3 exchange (normally a no-no in another order with the jump out of pincer joseki, but here compensated for by the pleasant press on the top and black's approach from the wrong side at top left) you don't want black to cut there as you can't dodge to the 3-3 point as you could without the exchange, so I can see the downside of that. But what is the downside of pole connection? The upside is there is no peep to the left of a, nor would c be an atari after the cut, and that could help deal with the cut (in fact the cut would still be devastating in my game, but it could make quite a difference in another fight. So why did Lee play the tiger mouth? It takes a liberty from the black group, but that doesn't make the cut after d work. I can see it makes a little more eyeshape, and as Lee likes to let his groups get weak and then magically live maybe that's why. Or is it making e not sente, and thus black can't so easily poke through the elephant eye at f to break into the centre (if he does white can break into the top side, though maybe black can play g first).

Click Here To Show Diagram Code
[go]$$W
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . X . X X . . B . . |
$$ | . . . O . . . . . , . O O . . X . W . |
$$ | . . . . . . . . . . . . . f . e . . . |
$$ | . . O . . . . . . . . . . . O . O . . |
$$ | . . . . . . . . . . . . . . a 1 . . . |
$$ | . . . . . . . . . . . . . c O X X . . |
$$ | . . . . . . . . . . . . . b . O X . . |
$$ | . . . , . . . . . , . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . O d . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


There's also this similar 3-4 joseki where I once played the same tiger mouth and the centre peep at a caused big troubles later; following which I vowed to never play tiger mouth but pole connection again in the future! Again why is this "the joseki" move rather than pole connection? (Not many pro examples though).
Click Here To Show Diagram Code
[go]$$W
$$ -------------------------
$$ . . . . . . . . . . . . .
$$ . . . . . . . . O . . . .
$$ . . X . X X X . O X . . .
$$ . . . O O O X 1 . , X . .
$$ . . . . . . O . O . . . .
$$ . . . . . . . a . X . . .
$$ . . . . . . . . . . . . .
$$ . . . . . . . . . . . . .[/go]


Edit: I just realised one other advantage of the tiger mouth connection is you can safely cut black's 2nd line attachment, if it's the pole connection black could break through at a:
Click Here To Show Diagram Code
[go]$$B
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . X . X X . . X . . |
$$ | . . . O . . . . . , . O O . . X . O . |
$$ | . . . . . . . . . . . . . . . . . 4 . |
$$ | . . O . . . . . . . . . . . O a O 1 . |
$$ | . . . . . . . . . . . . . . . O 3 2 . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . , . . . . . , . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

In fact it seems Lee Sedol utilised this later in the game when black ended up being forced to live submissively with kosumi there (though it also takes white's eyeshape, and Park did end up playing a to attack the whole white group, but he resigned when he went all-in and failed to kill it). It's impressive that despite getting the honte push up, Park's group there later got under pressure.
Click Here To Show Diagram Code
[go]$$B
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . X . X X . . X . . |
$$ | . . . O . . . . . , . O O . . X . O . |
$$ | . . . . . . . . . . . . . . . a . . . |
$$ | . . O . . . . . . . . . . . O . O . . |
$$ | . . . . . . . . . . . . . X O O . 1 . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . . O O X . . |
$$ | . . . , . . . . X , X . . . . O X . . |
$$ | . . . O . . . . . . . X . X O O X . . |
$$ | . . . . . . . . O O O X . X O X X . . |
$$ | . . . . . . . . . X X O . O X X . . . |
$$ | . . X . . O O O . . . O . O X . O . . |
$$ | . . O O O X X . X X X . . . . O . . . |
$$ | . . O X X . . . X O O O . O O , X . . |
$$ | . O X O . X . . O . . . . O X X . . . |
$$ | . X X . . . . . . . O . X X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


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 Post subject: Re: Uberdude's journal
Post #49 Posted: Tue May 16, 2017 1:14 pm 
Dies in gote

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Looks like B got away with all 3 of his shock contact moves - at C9, O7, and K10.

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 Post subject: Re: Uberdude's journal
Post #50 Posted: Tue May 16, 2017 2:38 pm 
Oza

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dust wrote:
Looks like B got away with all 3 of his shock contact moves - at C9, O7, and K10.

Yes, the 1st one was a surprise, my feeling is probably not good at pro level, and I think hane above was correct, but maybe not my leaning. If not e2 I think I have a fine result. o7 was a surprise, though I was half expecting o6. Looks a good move: I think I should hane below. k10 I half expected, but no time to plan response. Should play faster!

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 Post subject: Re: Uberdude's journal
Post #51 Posted: Wed May 17, 2017 8:46 am 
Dies with sente

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Yeah C9 can't really be good, your E8 looks like a good idea, my first feeling was C8, though lean can't be too bad.

vs. O7, in hindsight, your extend doesn't look good, so I think O8, double hane. it seems that after you did O8 in the game, you had to extend

O7 does look like a good move, comparing to the standard O6

vs K10 probably directly cut at E7

K10 doesn't look good

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