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Shapes to remember (SDK level) http://www.lifein19x19.com/viewtopic.php?f=48&t=16894 |
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Author: | jlt [ Mon Dec 16, 2019 1:22 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #12. In this game, I was white, 7k EGF, playing against 2k EGF. This game showed how weak my endgame is: Katago estimates that I was leading by 10 points/91% winrate at move 147, and yet I lost by 15.5 points. White to play and make a good endgame move. |
Author: | Knotwilg [ Mon Dec 16, 2019 2:13 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
What I learnt from pro games is that in the early endgame it's not so much about points but about life and death. In the late endgame it's easier to calculate what is sente and what is the biggest gote. In the early endgame there are so many mutual implications that this is harder. So one first needs to identify the areas where there is or will be major impact on groups, whether they are immediately sente or not. Attemmpt: |
Author: | jlt [ Mon Dec 16, 2019 3:06 am ] | ||
Post subject: | Re: Shapes to remember (SDK level) | ||
@Knotwilg: I didn't try all your moves, but according to Katago, "b" is not bad, while "a" and "g" are even worse than the move I played in my game. Here is the game, in case someone would be interested.
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Author: | Knotwilg [ Mon Dec 16, 2019 6:16 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
jlt wrote: @Knotwilg: I didn't try all your moves, but according to Katago, "b" is not bad, while "a" and "g" are even worse than the move I played in my game. To be fair to myself, I thought B was too trivial to be worthy of exercise, so I looked for something more interesting. With hindsight G is not sente and neither will it bring about much sente against any of the separated groups. B is a sente border play for Black and White has a good follow-up if Black doesn't answer. Nice endgame exercise! |
Author: | jlt [ Thu Jan 02, 2020 8:53 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #13: this one should be obvious but both players, IGS 6k, got it wrong. Black to play. What are the next few moves? |
Author: | TelegraphGo [ Thu Jan 02, 2020 9:39 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
I thought this was going to be about black trying this common shape: If white backs off at S8, this is an improvement on the game. So a fight's about to go down! But unfortunately, black doesn't have the strength to do this here. How does white win the fight? |
Author: | jlt [ Wed Jan 15, 2020 2:04 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #14: this one should be easy. Edit: I forgot to say that it was White to move, thanks dfan. |
Author: | dfan [ Wed Jan 15, 2020 6:19 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
White to move, for anyone was wondering but didn't feel like counting the stones. |
Author: | jlt [ Tue Feb 04, 2020 3:53 pm ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #15: White to play. |
Author: | jlt [ Sun Feb 16, 2020 7:22 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #16. White to play. |
Author: | jlt [ Fri Apr 17, 2020 8:58 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #17. I was White, 6k+ on IGS, playing a 2-stone handicap game against a 7k. Hint: Black's last move was Answer: |
Author: | Uberdude [ Sun Apr 19, 2020 9:09 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
jlt, I will add my own example in a similar vein to your collection if you don't mind. Sdk should be able to get it right, but I got it wrong in a handicap game I just played. I had correctly assumed my shape was connected, but when my opponent played a move which shouldn't have worked my shape intuition was wrong and I answered too quickly and boom, I made a 20+ point mistake and lost the game. |
Author: | jlt [ Sun Apr 19, 2020 9:54 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Interesting problem. I think another move works. |
Author: | Bill Spight [ Sun Apr 19, 2020 10:04 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Author: | jlt [ Tue Apr 21, 2020 9:51 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #19. White to play. Possible answer. |
Author: | jlt [ Wed Apr 22, 2020 12:42 pm ] |
Post subject: | Re: Shapes to remember (SDK level) |
I got promoted to IGS 5k after an undeserved victory: my opponent resigned while being 1 point ahead according to KataGo. Anyway, here is a joseki question, extracted from the game. The answer should be pretty obvious, but I was careless and played a wrong move. In general I play the opening quite fast in order to save time for the middle game but that's probably a bad habit, it would be better to consider several possible josekis and choose the most appropriate one. Position #20: Black to answer locally. Answer: |
Author: | jlt [ Mon Apr 27, 2020 9:58 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
After winning 15/15 games on Fox at 3k level, I got double-promoted to 1k... but then I was afraid that the games would become too difficult so I came back to my 2k Tygem account, to see if I get stuck or if I can manage to rank up there as well. In the following position I didn't see immediately that Black can play at "a" (White cannot respond at "b", otherwise Black plays "c") but that's not my point. The question is: how to attack White's two stones on the bottom. The answer is rather elementary but I didn't find it during the game. Position #21: Black to attack the marked white group. Answer: |
Author: | jlt [ Thu May 07, 2020 4:38 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #22: from a blitz game, White to play. The move is not difficult to find but not high enough in my "policy network". |
Author: | jlt [ Thu May 14, 2020 3:08 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
Position #23: Black to play. What are the interesting areas on the board? In which area should Black play first? Katago's answer: |
Author: | Bill Spight [ Thu May 14, 2020 3:19 am ] |
Post subject: | Re: Shapes to remember (SDK level) |
The different areas of the board are not independent, although one is almost so. Anyway, it is still a good idea, I think, to consider how play might go in each identifiable region. |
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