in the upper left corner (instead of at A at the left edge), so erasing a Black ko-threat!=> White +
is not really a genuine ko-threat!Capturing at White B would also result in a White win!
The most difficult yose problem
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Cassandra
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Re: The most difficult yose problem
White will connect at in the upper left corner (instead of at A at the left edge), so erasing a Black ko-threat!
=> White +
is not really a genuine ko-threat!
Capturing at White B would also result in a White win!
in the upper left corner (instead of at A at the left edge), so erasing a Black ko-threat!=> White +
is not really a genuine ko-threat!Capturing at White B would also result in a White win!
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)
Igo Hatsuyōron #120 (really solved by KataGo)
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jmeinh
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Re: The most difficult yose problem
Yes, I agree. Then (if only because of the additional white ko-threats on K8 etc.) it is again Black who needs help...Cassandra wrote: White will connect at
=> White +
Capturing at White B would also result in a White win!
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Gérard TAILLE
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Re: The most difficult yose problem
Yes. What about this new one (119 moves):jmeinh wrote:Yes, I agree. Then (if only because of the additional white ko-threats on K8 etc.) it is again Black who needs help...Cassandra wrote: White will connect at
=> White +
Capturing at White B would also result in a White win!
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Cassandra
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Re: The most difficult yose problem
It's the same issue as mentioned before.Gérard TAILLE wrote:Yes. What about this new one (119 moves):
Black's atari
at White's six stones at the upper edge is NO genuine ko-threat.=> White will capture the ko and win by 1.5 points (it results a change in the order of moves with the older line, where Black created a five-stone string).
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)
Igo Hatsuyōron #120 (really solved by KataGo)
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Gérard TAILLE
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Re: The most difficult yose problem
Yes. At least the number of ideas increases but we have still to find this very long sequence.Cassandra wrote:It's the same issue as mentioned before.Gérard TAILLE wrote:Yes. What about this new one (119 moves):
Black's atari
=> White will capture the ko and win by 1.5 points (it results a change in the order of moves with the older line, where Black created a five-stone string).
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Cassandra
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Re: The most difficult yose problem
I have not checked this yet (and so do not have any idea whether the hint might be useful / succesful applicable):Gérard TAILLE wrote:At least the number of ideas increases but we have still to find this very long sequence.
Have you ever tried your idea (seems reasonable in principle) at the other stage of the ko-fight in the lower right corner?
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)
Igo Hatsuyōron #120 (really solved by KataGo)
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Gérard TAILLE
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Re: The most difficult yose problem
Here is a new attempt with 113 moves and a black win by 0.5 points:dany wrote:almost the solution, but the order of ko threats mattersGérard TAILLE wrote:Yes. What about this new one (119 moves):
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Cassandra
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Re: The most difficult yose problem
At least one correct "feeling" in the last stage of the solution finding ...dany wrote:almost the solution, but the order of ko threats mattersGérard TAILLE wrote:Yes. What about this new one (119 moves):
However, I still don't like the large number of White pass-"moves" in this problem.
Taken together with the large difference in the number of Black and White stones in the starting position, this gives an "unbalanced" impression.
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)
Igo Hatsuyōron #120 (really solved by KataGo)
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jmeinh
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Re: The most difficult yose problem
If White captures the bottom right stones with move 88, S must capture the top right corner with 2 moves and it ends again with W+0.5 .Gérard TAILLE wrote:Yes. What about this new one (119 moves):
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Cassandra
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Re: The most difficult yose problem
Black only needs to invest ONE stone in the top right, because it is enough to capture the single White stone there.jmeinh wrote:If White captures the bottom right stones with move 88, S must capture the top right corner with 2 moves and it ends again with W+0.5 .Gérard TAILLE wrote:Yes. What about this new one (119 moves):
=> Black + 0.5.
______________________
You really meant the 113-move solution attempt, didn't you?
Last edited by Cassandra on Mon Feb 14, 2022 2:01 pm, edited 1 time in total.
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)
Igo Hatsuyōron #120 (really solved by KataGo)
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Gérard TAILLE
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Re: The most difficult yose problem
I hope the last adjustement:jmeinh wrote:If White captures the bottom right stones with move 88, S must capture the top right corner with 2 moves and it ends again with W+0.5 .Gérard TAILLE wrote:Yes. What about this new one (119 moves):
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dany
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Re: The most difficult yose problem
Not yetGérard TAILLE wrote:Here is a new attempt with 113 moves and a black win by 0.5 points:
W+0.5
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Re: The most difficult yose problem
This looks promising! May we already congratulate you? What does Dany say?Gérard TAILLE wrote:I hope the last adjustement:jmeinh wrote:If White captures the bottom right stones with move 88, S must capture the top right corner with 2 moves and it ends again with W+0.5 .Gérard TAILLE wrote:Yes. What about this new one (119 moves):
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dany
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Re: The most difficult yose problem
Not yetjmeinh wrote:This looks promising! May we already congratulate you? What does Dany say?Gérard TAILLE wrote:
I hope the last adjustement:
W+0.5
crazy ko mechanics
