Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1+some 2/3/84; site dual.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!ihnp4!dual!bill
From: bill@dual.UUCP (Bill Kanawyer)
Newsgroups: net.games.go
Subject: Answer: Life & Death problem #12.
Message-ID: <655@dual.UUCP>
Date: Fri, 6-Jul-84 15:07:48 EDT
Article-I.D.: dual.655
Posted: Fri Jul  6 15:07:48 1984
Date-Received: Sat, 7-Jul-84 02:28:49 EDT
Distribution: net
Organization: Dual Systems, Berkeley, CA
Lines: 30

<<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>>


>     Black has a way to kill white in the corner. But look out... it's not
> what you think. Sometimes one need to go the long way around to reach a goal.

	A  B  C  D  E  F  G  H  J  K
   10   *  .  .  .  .  .  *  .  .  .
    9   .  .  .  .  .  .  .  .  .  .
    8   .  .  .  .  .  .  .  .  @  @
    7   .  .  .  .  .  .  .  @  .  O
    6   .  .  .  .  .  .  .  @  @  O
    5   .  .  .  .  .  @  O  @  O  O
    4   *  .  .  .  .  .  @  O  @  4
    3   .  .  .  .  @  .  @  O  O  3
    2   .  .  .  .  .  @  O  O  .  5
    1   .  .  .  .  .  @  @  2  1  .

Black = @  White = O  Answer = 1, 2, 3, ...
---------------------------------------

    How many of you picked K-2 as the first move?
    
    Well black needs to make the move at J-1 first otherwise white can force a
ko. White must answer at 2 or he dies right away. Then black plays at the key
position of K-3 and white is finished. Note that white must take the black
stone with 4 or black kill the lower white group with his next move.

Bill Kanawyer
{ucbvax,amd70,ihnp4,cbosgd,decwrl,fortune,zehntel}!dual!bill