Search found 310 matches

by Matti
Sat Aug 19, 2023 3:01 am
Forum: European Go Federation Forum
Topic: 2023 AGM Agenda
Replies: 34
Views: 100039

Re: 2023 AGM Agenda

Silencing clocks:

Preagreed jigo:

Was used at London GP by Ivan Detkov and another Russian to maximise both players' projected combined prize money for places 1 and 2. They were penalised.

The tournament organisers had set rules that enabled jigos to be played. The two russian players were not ...
by Matti
Fri Jun 24, 2022 4:12 am
Forum: Amateurs
Topic: What is the longest winning sequence ?
Replies: 23
Views: 21257

Re: What is the longest winning sequence ?

A molasses ko makes the game five times slower. If there is two molasses kos of differnt sizes the game get 25 times slower. There might be even more molasses kos.
by Matti
Mon Sep 13, 2021 10:04 pm
Forum: Go Rules
Topic: J89's pass-for-ko: Misinterpreted in the Western Go World?
Replies: 135
Views: 84352

Re: J89's pass-for-ko: Misinterpreted in the Western Go Worl

Many years ago I discovered a patch for the "pass-for-ko rule. Even with it there wolud be other flaws in the J1989 rules, so I didn't bother to release it. Anyway:

In the confirmation phase:
A player may not recapture a ko before making a pass to recapture that particular ko.
A player may not ...
by Matti
Mon Aug 09, 2021 10:38 am
Forum: Go Rules
Topic: Time Ko
Replies: 0
Views: 6196

Re: Time Ko

Instead a superko rule in go, instead of a fifty-move rule in chess, you could just have a maximum total time per game and have the score counted as soon as that time elapses.
This makes some problems. I have seen lightinng games where both players are very short of time. Play started playing very ...
by Matti
Sun May 23, 2021 6:18 am
Forum: Go Rules
Topic: fair share go
Replies: 11
Views: 11640

Re: fair share go

phillip1882 wrote:i believe this would make for a fair game without komi.
use the fair share sequence,
1 2 2 1 2 1 1 2 2 1 1 2 1 2 2 1 etc. for move order.
How do you suggest to keep track whose move is it?
by Matti
Tue Sep 22, 2020 10:23 pm
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem

Gérard TAILLE wrote:
Unless somebody tells me she wish continue to search the original martian problem without knowing a solution, I will give you one of my solutions (on a 11x11 goban) next week, i.e. one month after my first post.

Good search!
Now, one moth has passed.
by Matti
Sat Sep 19, 2020 11:11 pm
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem

It seems that the send two rerurn one corner failed to distinguish PSK and SSK.
by Matti
Sat Sep 19, 2020 10:08 pm
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem

Matti,

I am now OK for japonese rule. I really appreciate your idea on this point!

It remains to analyse PSK and SSK rule.

I answered inside the hidden part.
I see the following sequence

$$B
$$ -----------------------
$$ | O O 2 3 X O . X X . |
$$ | . O O X X O O O O X |
$$ | O . O X . X X X ...
by Matti
Sat Sep 19, 2020 1:06 pm
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem


$$B
$$ -----------------------
$$ | O O b a X O . X X . |
$$ | . O O X X O O O O X |
$$ | O . O X . X X X O . |
$$ | . c O X X . X X O O |
$$ | O O O O O X . X X X |
$$ | X X X X O X X X . . |
$$ | X O O X O O X O X X |
$$ | X . . X X X O O O O |
$$ | . O O X O O . O . X |
$$ | O . X X X O . O X ...
by Matti
Sat Sep 19, 2020 12:29 pm
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem


$$B
$$ -----------------------
$$ | O O b a X O . X X . |
$$ | . O O X X O O O O X |
$$ | O . O X . X X X O . |
$$ | . c O X X . X X O O |
$$ | O O O O O X . X X X |
$$ | X X X X O X X X . . |
$$ | X O O X O O X O X X |
$$ | X . . X X X O O O O |
$$ | . O O X O O . O . X |
$$ | O . X X X O . O X ...
by Matti
Sat Sep 19, 2020 9:29 am
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem

I first sent this solution as personal message to Gérard TAILLE. I sent it here for further discussion.
$$B
$$ -----------------------
$$ | O O b a X O . X X . |
$$ | . O O X X O O O O X |
$$ | O . O X . X X X O . |
$$ | . c O X X . X X O O |
$$ | O O O O O X . X X X |
$$ | O X X X O X X X ...
by Matti
Sat Sep 19, 2020 5:24 am
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem

I first sent this solution as personal message to Gérard TAILLE. I sent it here for further discussion.
$$B
$$ -----------------------
$$ | O O b a X O . X X . |
$$ | . O O X X O O O O X |
$$ | O . O X . X X X O . |
$$ | . c O X X . X X O O |
$$ | O O O O O X . X X X |
$$ | O X X X O X X X ...
by Matti
Fri Sep 18, 2020 9:57 am
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem


I think now I have a solution on 10*10 board.

Fantastic Matti.
I will be very happy to analyse it and appreciate your job!
If you prefer to let the other players search without knowing a solution, maybe we can exchange via private messages. It is up to you to decide.
If I send you my soluton ...
by Matti
Fri Sep 18, 2020 9:02 am
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem

I have now found a position where all three rule stes have distinct best starting moves, but they are able to prolong the game without gaining points by choosing other moves.

I perfectly understand this point because it was also for me a great difficulty to avoid these "non natural" moves giving ...
by Matti
Thu Sep 17, 2020 3:56 am
Forum: Go Rules
Topic: Martian problem
Replies: 108
Views: 86806

Re: Martian problem

I have now found a position where all three rule stes have distinct best starting moves, but they are able to prolong the game without gaining points by choosing other moves.