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 Post subject: Re: DH records
Post #41 Posted: Sun May 14, 2017 6:17 am 
Lives with ko

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thanks for this Bill, it took me a bit of time, but I see what you mean now. And probably diagram 4 is never better.

The language I use for endgame does seem to confuse myself. It comes from pro commentary estimates, and my own understanding with a rough overview of the theory, whereas your system is clearer, comparing everything to a given zero point.


dhu163 wrote:
I can agree that in general your 3rd diagram is marginally better for white than the 4th, but by 1/6. I think you mean that after white a, then c is worth 2 2/3, so therefore a is worth 3 points with a 2 2/3 gote follow up, and therefore is worth 4 1/3 (instead of the 5 I first wrote down). The 3rd diagram is equivalent to if W gets a and B gets c, so this is better by (3- 2 2/3)/2 = 1/6.


There is a lot of rubbish in what I wrote here. It should be:

after white a, then c is worth 4 2/3, so therefore a is worth 3 points with a 4 2/3 gote follow up, and therefore is worth 3+ (4 2/3) /2 = 5 1/3 (instead of the 5 I first wrote down). The 3rd diagram is equivalent to if W gets a and B gets c, so it is better by ((4 2/3 )/2- 3)/2 = 1/3.

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 Post subject: Re: DH records
Post #42 Posted: Sun May 14, 2017 6:50 am 
Judan

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dhu163 wrote:
The language I use for endgame does seem to confuse myself. It comes from pro commentary estimates, and my own understanding with a rough overview of the theory, whereas your system is clearer, comparing everything to a given zero point.


Yes, I do think that the usual method of evaluating plays causes confusion. But this is not my system. It uses what I learned as miai counting, what O Meien today calls absolute counting ( 絶対計算 ). :)

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 Post subject: Re: DH records
Post #43 Posted: Wed May 17, 2017 9:15 am 
Lives with ko

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final pandanet game, and I've gone all season undefeated, playing almost all matches

this game, my play quality was low, or at least my alertness, judgement, reading were all down due to exam prep exhaustion, just relying on feeling. Also my opponent played well, making a nice plan to attack a weak group of mine (I should probably have sacrificed a large group to save that one) and perhaps it should have died. In the end, I thought I was slightly behind, but score estimate says I was ahead, I threatened a slow ko to kill my opponent's corner. Instead he threw the ko in himself, so I took the ko first for free, he played a fake ko threat in time trouble, and I won.

I made a quick commentary.



And a practical way to avoid the complacency vs Andrew Kay is probably to imagine a significant reverse komi, to keep playing good moves, and still challenge my opponent to think, to still leave a high quality game, than some conservative rubbish.




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 Post subject: Re: DH records
Post #44 Posted: Thu May 18, 2017 3:33 pm 
Lives with ko

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I just had a good pro game study session. Perhaps with uni pressure and computer go, my creative spirit in go has gotten lost, and I've stopped improving.

With computer go, I've fallen for the trap of thinking learning their ideas and techniques will help my go, when I forget how much of a gap I have on the understanding of every move of high level games and every move they notice but don't play. Perhaps it is also that the high level of judgement and intuition of computer go really brings me back to my ideas of the logic of fuzzy concepts and intuition that I found so interesting before in go. But it turns out to have limited value in improving go skill. I need to put more emphasis improving my personal understanding rather than mimicking high level moves when my understanding of lower level moves is insufficient. I've reduced my leela usage to a minimum, and I should try to think more independently of alphago.

At today's go club, I got the chance to think more deeply about pro moves on a real board, guessing the next move, and seeing how confusing they are, and how big the gap is. Normally I just skim games without thinking too much.

I've looked at the first 30 moves quite in depth and no more. The file size is bigger than my average self-commentary.

Also https://www.youtube.com/watch?v=-yhaEj5ylL0
Lee Changho plays a very cool new move against Lee Sedol in some Korean cup. I can't find the sgf on go4go yet.



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 Post subject: Re: DH records
Post #45 Posted: Fri May 19, 2017 5:46 am 
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not too bad a game. Looked into move 28 in depth.



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 Post subject: Re: DH records
Post #46 Posted: Thu Jun 08, 2017 2:41 am 
Lives with ko

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I won 6/7 at challengers, to come joint top with uberdude, who I will be playing in the final of the British Championship.

I felt I played much much better than at candidates, and by games 4,5,6,7, my opponents seemed to have no chance.
So along with nice study sessions with Andrew Simons, Tim Hunt and Andrew Kay each evening over alphago self-play, I was in a good mood the whole tournament despite losing on day 1 to Uberdude, and getting a ridiculous £80 fine on morning 2 for forgetting my discount railcard at home while using it for my oyster card on the London Underground.
Quite relaxed whether I got through or not. And daring to experiment with the crazy ideas from alphago self-play

varying amounts of comments, I'll probably add more later







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chall2017 2.sgf [4.97 KiB]
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Last edited by dhu163 on Thu Jun 08, 2017 4:06 am, edited 2 times in total.
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 Post subject: Re: DH records
Post #47 Posted: Thu Jun 08, 2017 2:47 am 
Lives with ko

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 Post subject: Re: DH records
Post #48 Posted: Thu Jun 08, 2017 2:48 am 
Lives with ko

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 Post subject: Re: DH records
Post #49 Posted: Sun Aug 20, 2017 1:41 pm 
Lives with ko

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I'm very pleased to have won game 1 of the British Championship, and played well. I had gotten far too nervous beforehand, so this has calmed me down.

Slow games prove very good for me. And my self-review file is full of variations, at a record size.



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Last edited by dhu163 on Mon Aug 21, 2017 4:01 am, edited 1 time in total.

This post by dhu163 was liked by 3 people: daal, dfan, ez4u
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 Post subject: Re: DH records
Post #50 Posted: Sun Aug 20, 2017 3:49 pm 
Oza
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Good job holding onto that grain of sand! Thanks for sharing such a thorough and interesting review.

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 Post subject: Re: DH records
Post #51 Posted: Wed Aug 23, 2017 3:18 am 
Lives with ko

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I don't much trust leelabot these days.

But using it points out some of the issues in my judgement, especially when emotional.

1) At the start, it preferred black in my joseki choice: perhaps move 13 is better at C17; at move 16, it doesn't like my D15 idea as it thinks the D14 cut works instead of needing to atari D18; move 20, 21, 22 could all be D15; move 35 mistake drops B's win chance from 52.6% to 38.3%

2) my whole sequence from move 52 to 62, taking gote for insufficient profit, is questionable, e.g. it preferred move 54 at D3. I had already suggested in my review move 52 at L17


btw, upon calculation, move 68 better endgame is actually to make good shape at C6

3) At move 69, B's chance jumps from 36% to 39% (it didn't notice how good this move was) at it suggests J17 for W and cut. It really doesn't like my strategy with move 70, I suppose it says I lose too much on the upper right without sufficient profit from any attack. By move 79, it likes B with K15, at 62%! But perhaps it is a bit confused, as even though move 88-94 follows its line it rapidly drops from 60% to B to 60% to W. Leelabot is bad at semeai. At move 124, it is up to 86% to W, and doesn't really change afterwards.

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 Post subject: Re: DH records
Post #52 Posted: Fri Oct 06, 2017 10:48 am 
Lives with ko

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I won the 2nd game of the title match by 3.5 on Saturday, so I'm British champion! Still, I'm sufficiently disappointed in my play I haven't found much motivation to review it. I was quite far behind through the middlegame, but Andrew made some slack moves.

Though I haven't actually had the time with all the admin 1st week back at uni, and organising the go stall at the Fresher's fair.

I have spent time on a lengthy review of my Pandanet game last Tuesday though.

It was a crazy game, a simple mistake nearly cost me the game, forcing me to play a 100 point ko for life for my huge group while 7 seconds per move. I had been hoping for a less stressful game, but I guess go is like that.

Board 1 vs Denmark's Jannik Rasmussen:



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Post #53 Posted: Sat Oct 07, 2017 9:23 am 
Lives in sente
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For a low dan player, your game reviews would be highly instructive paths to professional play.
If I wanted to become better, I'd study them.

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Post #54 Posted: Sat Oct 07, 2017 6:11 pm 
Lives with ko

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some alphago thoughts




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Post #55 Posted: Sat Oct 21, 2017 12:03 pm 
Lives with ko

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added quite a bit of tewari on positions that have confused me for a while



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Post #56 Posted: Wed Nov 15, 2017 12:03 pm 
Lives with ko

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A very short review this time. Perhaps I'm a bit tired for these matches, but I need to be in good form to have a chance against Germany.

Nothing really happened this game, and I wasn't concentrating too hard.

just let leela do the analysis of the opening. It says I was very far ahead in the opening (I did copy from alphago, deepzen), but both sides did several silly things, and the win rate switched between 50 and 70% in my favour twice.



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