Shapes to remember (SDK level)
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Bill Spight
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Re: Shapes to remember (SDK level)
Congratulations!
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins
Visualize whirled peas.
Everything with love. Stay safe.
At some point, doesn't thinking have to go on?
— Winona Adkins
Visualize whirled peas.
Everything with love. Stay safe.
starts to be problematic, even if Black's winrate at that stage is about 15%.-
jlt
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Re: Shapes to remember (SDK level)
Position #10: a move that both players (KGS 3k and 4k) failed to see during most of the game. Black to play.
cannot be at 
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jlt
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Re: Shapes to remember (SDK level)
Position #11.
No-komi game against a Fox 3k, I am white. What to do of the marked stones?
No-komi game against a Fox 3k, I am white. What to do of the marked stones?
is sente, since it threatens to save the two white stones, so Black responds with 
. Then White can play elsewhere.-
jlt
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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.
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.
stone, so I protected at d. Katago says it loses "5 points". A better way of playing is to make sente moves starting with "c", which threaten to swallow
Last edited by jlt on Mon Dec 16, 2019 6:10 am, edited 1 time in total.
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Knotwilg
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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:
Attemmpt:
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jlt
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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.
Here is the game, in case someone would be interested.
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- game.sgf
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Knotwilg
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Re: Shapes to remember (SDK level)
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.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.
Nice endgame exercise!
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jlt
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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?
Black to play. What are the next few moves?
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TelegraphGo
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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?
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?
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jlt
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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.
Last edited by jlt on Wed Jan 15, 2020 7:30 am, edited 1 time in total.
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dfan
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Re: Shapes to remember (SDK level)
White to move, for anyone was wondering but didn't feel like counting the stones.
at 
is also possible, although slighty less good.