From: jzy@casbah.acns.nwu.edu (Jim Yu)
Subject: Re: Curios - The King
Organization: Northwestern University, Evanston Illinois.
Date: Wed, 16 Dec 1992 02:02:48 GMT


Hello everyone!

In article <1992Dec8.130908.20007@irisa.fr> giordano@irisa.fr writes:
> Hi,
>
> I finally found the original formulation of the old chinese go problem
> known as The king of tsume go problems (i found it in an old Revue
> Francaise de Go). Nice problem indeed, you'll enjoy it. This is the upper
> right corner.   
>
>  . . . # . . . . . # #
>  . O . O # . . # . # #		1. There's no other stone on the board.
>  . . . O # # . # # O O
>  . . . . O O O O O . .		2. White (O) to kill.
>  . . . . . . . . . O .
>  . . . . . . . . . . .		3. What is the size of the board
>                                          (17, 19 or 21) ? 
> 
> Good luck. J-Yves.
>

This is indeed an interesting problem -- I especially felt so *after* I read
the solution. :-)

You have the answer?  Yes, I do.  *Fortunately* it's not my answer; my
answer, after minutes of intensive staring at the board, was that I could
not solve it! :-)  I know you don't want to see that.

Choi Eungsoo knows the answer.  He's better known as "playboy" on IGS (yes,
that's one of the hundreds of reasons why IGS is so attractive :-).  He
happened to study this problem when he worked hard on Go one time, and
today he's willing to share his solution with everyone.

Playboy also wants to thank jive (IGS name), who posted the question in the
first place, for this gave him (playboy) a chance to look at this beautiful
problem one more time.

And the following is playboy's beautiful solution to this beautiful problem
in the beautiful mgt format. :-)  And this is not it.  Frankly, I have as
many questions as before; I need help to *understand* the solution, not
just to know it.  When playboy agreed to offer this help to me, you can
imagine, I was thrilled.  Next time, hopefully soon, we'll post this mgt
file again, with comments and variations.

Yours truly,
Jim Yu

------------->8--------------------8<---------------
(
;
GaMe[1]
VieW[]
SiZe[19]
Comment[Curios - The King

1. There's no other stones.

2. White to kill.

3. What's the size of the board?]
AddBlack[sa][sb][ra][rb][qc][pb][pc][nc][mb][mc][la]
AddWhite[sc][rc][re][qd][pd][od][nd][md][lb][lc][jb]
;
White[na]
;
Black[oc]
;
White[oa]
;
Black[ma]
;
White[pa]
;
Black[ob]
;
White[qb]
;
Black[qa]
;
White[qb]
;
Black[rb]
;
White[ra]
;
Black[qa]
;
White[sb]
;
Black[sa]
;
White[kb]
;
Black[nb]
;
White[ra]
;
Black[ka]
;
White[qb]
;
Black[ja]
;
White[ib]
;
Black[rb]
;
White[oa]
;
Black[sa]
;
White[pa]
;
Black[na]
;
White[ra]
;
Black[ia]
;
White[hb]
;
Black[sa]
;
White[pa]
;
Black[oa]
;
White[ra]
;
Black[ha]
;
White[qb]
;
Black[gb]
;
White[pa]
;
Black[ga]
;
White[gc]
;
Black[fb]
;
White[ec]
;
Black[fc]
;
White[fd]
;
Black[gd]
;
White[hc]
;
Black[ed]
;
White[fe]
;
Black[eb]
;
White[dc]
;
Black[db]
;
White[cc]
;
Black[cb]
;
White[bb]
;
Black[bc]
;
White[bd]
;
Black[ac]
;
White[ad]
;
Black[cd]
;
White[ab]
;
Black[bc]
;
White[ac]
;
Black[dd]
;
White[bc]
;
Black[cf]
;
White[bf]
;
Black[bg]
;
White[ce]
;
Black[de]
;
White[df]
;
Black[be]
;
White[ee]
;
Black[ce]
;
White[cg]
;
Black[af]
;
White[ae]
;
Black[bf]
;
White[bh]
;
)