Life In 19x19

I see. Then my idea doesn't work as intended.

Is that really a problem?

Well, I think so.
I'm not good at creating images, so I use coordinates.
B A3, W A1, B L4, W J1, B A2.
Now White has a choice:
a. W pass, B A3 , and W A1 is forbidden.
b. W L9 (or elsewhere), B A3 (repeating the loop until W cannot make a move without damaging himself).
c. W L3, B H1 (SSK allows ...

If I'm right with my solution idea, it's a pretty nasty superko beast. A kind of "pass fight", and at the same time an example of the difference between situational superko and positional superko, isn't it?
And I think maaany moves are necessary before black can make the decisive capture...

There was a similar discussion somewhere on this board before, and one of the most enlightening posts (at least for me) was one that pointed out the difference between "gentleman" and "sportsman". Perhaps this difference is also the decisive one in this case.

After a small change in the order of Black's ko threats (analogous to the order in the video), the White ko trick no longer seems to work, Black seems to refute it. But maybe I'm missing something...
(;SZ[13]PL[B]KM[0.5]AB[da][ea][fa][ga][ka][la][fc][gc][hc][fd][jd][kd][ld][fe][he][ie][je][le][me ...

After a small change in the order of Black's ko threats (analogous to the order in the video), the White ko trick no longer seems to work, Black seems to refute it. But maybe I'm missing something...
(;SZ[13]PL[B]KM[0.5]AB[da][ea][fa][ga][ka][la][fc][gc][hc][fd][jd][kd][ld][fe][he][ie][je][le][me ...

Yes, Black captures at the top left with move 99. Although at the cost of "complexity" (but that is a matter of taste).
I do not see to which post you answer.
It seems it is not my last one because the purpose of black is to have the shortest sequence isn't it?
Well, actually it was your last one ...

Yes, Black captures at the top left with move 99. Although at the cost of "complexity" (but that is a matter of taste).

Will we ever get to see Dany's "Not yet" again?
Well, I used to hate it - a little bit, at least
But if it doesn't come again - I will certainly miss it. A little bit, at least.

$$Bm87
$$ +---------------------------+
$$ | . . O X X X X X O . O . O |
$$ | . . O O O O X X O O . O O |
$$ | . O X X O X X X O O O O O |
$$ | . . . O X X , . X X X X O |
$$ | . . . O O X . X X X . X X |
$$ | . O X . O X . . . O X . 1 |
$$ | O O O O O X O O O X X X . |
$$ | X O X X O O X X O X ...

...
P.S. with ko trick the solution can be extended by 4 moves
Is this what you have meant?
(;SZ[13]PL[B]KM[0.5]AB[da][ea][fa][ga][ka][la][fc][gc][hc][fd][jd][kd][ld][fe][he][ie][je][le][me][cf][ff][fg][jg][kg][lg][ah][ch][dh][gh][jh][lh][mh][ai][bi][ci][ei][gi][ji][cj][hj][ij][jj][dk][ek][ik ...

Yes. What about this new one (119 moves):
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 .

I hope the last adjustement:

(;SZ[13]PL[B]KM[0.5]AB[da][ea][fa][ga][ka][la][fc][gc][hc][fd][jd][kd][ld][fe][he][ie ...

Gérard TAILLE wrote:Yes. What about this new one (119 moves):

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 .

$$Wm72 Komi = 0.5; prisoners: :b21: :w8:
$$ +---------------------------+
$$ | . . O X X X X X O . O . O |
$$ | . 1 O O O O X X O . X . O |
$$ | . O X X O X X X O O O O O |
$$ | . O X O X X , . X X X X O |
$$ | . a Z O O X . X X X . X X |
$$ | . O X . O X . . . . . O . |
$$ | O O O O O X O O O X X ...