Has anyone else seen this? I thought it was pretty awesome. I plan to get one of these as soon as possible. Although, I've never really had a credit card before so I'm kind of wary of them.
Why is an article on the AGA website dated June 27, 2011 referencing the upcoming 2010 Mind Games?
Re: Go Credit Card
Posted: Mon Jun 27, 2011 9:28 pm
by Jedo
Very cool! Maybe when I'm an actual adult who has a credit card, I'll consider this.
Re: Go Credit Card
Posted: Mon Jun 27, 2011 11:41 pm
by lefuet
why did black play in the corner? ..
Re: Go Credit Card
Posted: Tue Jun 28, 2011 4:05 am
by LocoRon
It looks like a tsumego.
Re: Go Credit Card
Posted: Tue Jun 28, 2011 10:33 am
by Redundant
LocoRon wrote:It looks like a tsumego.
I can almost swear that I saw this problem in a book a 4d at my go club was studying...
Re: Go Credit Card
Posted: Wed Jun 29, 2011 1:04 pm
by Solomon
The tsumego on the card:
$$W $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | . . X X X . O . . $$ | . . X . . X O . . $$ | . . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$W $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | . . X X X . O . . $$ | . . X . . X O . . $$ | . . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Re: Go Credit Card
Posted: Wed Jun 29, 2011 1:40 pm
by SoDesuNe
Araban wrote:The tsumego on the card:
$$W $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | . . X X X . O . . $$ | . . X . . X O . . $$ | . . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$W $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | . . X X X . O . . $$ | . . X . . X O . . $$ | . . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 3 X O O O O . . . $$ | 1 . X X X . O . . $$ | a 2 X . . X O . . $$ | . . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 3 X O O O O . . . $$ | 1 . X X X . O . . $$ | a 2 X . . X O . . $$ | . . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Shortage of liberties. If Black plays 'a' White just puts Atari with 2. Did I miss something? =o
Re: Go Credit Card
Posted: Wed Jun 29, 2011 1:53 pm
by Redundant
@Sodesune:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Re: Go Credit Card
Posted: Wed Jun 29, 2011 1:57 pm
by Kirby
Redundant wrote:@Sodesune:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
I didn't analyze this problem that much, but my initial thought from this position was that white could simply play here:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | O 1 X X X . O . . $$ | . . X . . X O . . $$ | X . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | O 1 X X X . O . . $$ | . . X . . X O . . $$ | X . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
However, this makes me slightly nervous:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 5 X O . . . . . . $$ | 3 X O O O O . . . $$ | O 1 X X X . O . . $$ | 4 2 X . . X O . . $$ | X . X X . X O . . $$ | 7 6 O O X . O . . $$ | O O 8 . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 5 X O . . . . . . $$ | 3 X O O O O . . . $$ | O 1 X X X . O . . $$ | 4 2 X . . X O . . $$ | X . X X . X O . . $$ | 7 6 O O X . O . . $$ | O O 8 . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Re: Go Credit Card
Posted: Wed Jun 29, 2011 1:59 pm
by SoDesuNe
Redundant wrote:@Sodesune:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 3 X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 3 X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
I thought cutting and capturing were obvious ^^
Kirby Maybe this is the solution, does anyone has the concrete answer?
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Maybe this?
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 4 X . . X O . . $$ | 2 6 X X . X O . . $$ | 5 . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 4 X . . X O . . $$ | 2 6 X X . X O . . $$ | 5 . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Ha ha ha, no, snapback ^^ It's getting late.
BUT NOW!
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . 3 X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . 3 X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 8 X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 5 X X X . O . . $$ | 6 3 X . . X O . . $$ | 2 4 X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 8 X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 5 X X X . O . . $$ | 6 3 X . . X O . . $$ | 2 4 X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
at and feakin' under the stones!
Re: Go Credit Card
Posted: Wed Jun 29, 2011 2:12 pm
by Kirby
SoDesuNe wrote:
Redundant wrote:@Sodesune:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 3 X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 3 X X X . O . . $$ | . . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
I thought cutting and capturing were obvious ^^
Kirby Maybe this is the solution, does anyone has the concrete answer?
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 . X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Maybe this?
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 4 X . . X O . . $$ | 2 6 X X . X O . . $$ | 5 . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 . X X X . O . . $$ | 3 4 X . . X O . . $$ | 2 6 X X . X O . . $$ | 5 . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Ha ha ha, no, snapback ^^ It's getting late.
It is the best I've come up with so far (ko).
This also doesn't seem to work:
$$Wc $$ ------------------- $$ | 5 O O . . . . . . $$ | 3 X O . . . . . . $$ | 9 X O O O O . . . $$ | 2 7 X X X . O . . $$ | 4 . X . . X O . . $$ | 1 6 X X . X O . . $$ | 8 0 O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | 5 O O . . . . . . $$ | 3 X O . . . . . . $$ | 9 X O O O O . . . $$ | 2 7 X X X . O . . $$ | 4 . X . . X O . . $$ | 1 6 X X . X O . . $$ | 8 0 O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
Re: Go Credit Card
Posted: Wed Jun 29, 2011 2:13 pm
by judicata
It's only a hard problem if you assume it is white to kill .
Re: Go Credit Card
Posted: Wed Jun 29, 2011 2:14 pm
by Kirby
However, I guess in this diagram was aji-keshi, and should be used as a ko threat:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 5 X O . . . . . . $$ | 3 X O O O O . . . $$ | O 1 X X X . O . . $$ | 4 2 X . . X O . . $$ | X . X X . X O . . $$ | 7 6 O O X . O . . $$ | O O 8 . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 5 X O . . . . . . $$ | 3 X O O O O . . . $$ | O 1 X X X . O . . $$ | 4 2 X . . X O . . $$ | X . X X . X O . . $$ | 7 6 O O X . O . . $$ | O O 8 . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
That is, it's probably better for black to play this way:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 3 X O O O O . . . $$ | O 1 X X X . O . . $$ | C 2 X . . X O . . $$ | X . X X . X O . . $$ | 5 4 O O X . O . . $$ | O O 6 . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | 3 X O O O O . . . $$ | O 1 X X X . O . . $$ | C 2 X . . X O . . $$ | X . X X . X O . . $$ | 5 4 O O X . O . . $$ | O O 6 . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
If he doesn't have good enough ko threats, he can always play the marked point. And, if he does have threats elsewhere, it can be a local threat for him.
Re: Go Credit Card
Posted: Wed Jun 29, 2011 2:16 pm
by SoDesuNe
I edited above:
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . 3 X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | . X O . . . . . . $$ | . X O O O O . . . $$ | 1 . X X X . O . . $$ | . 3 X . . X O . . $$ | 2 . X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 8 X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 5 X X X . O . . $$ | 6 3 X . . X O . . $$ | 2 4 X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .
[go]$$Wc $$ ------------------- $$ | X O O . . . . . . $$ | 8 X O . . . . . . $$ | 7 X O O O O . . . $$ | 1 5 X X X . O . . $$ | 6 3 X . . X O . . $$ | 2 4 X X . X O . . $$ | . . O O X . O . . $$ | O O . . O O . . . $$ | . . . . . . . . . $$ | . . . , . . . . .[/go]
at 
and feakin' under the stones!
.
in this diagram was aji-keshi, and should be used as a ko threat: