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!we13!ihnp4!dual!bill From: bill@dual.UUCP (Bill Kanawyer) Newsgroups: net.games.go Subject: Answer: Live & Death problem #8. Message-ID: <446@dual.UUCP> Date: Tue, 17-Apr-84 16:07:33 EST Article-I.D.: dual.446 Posted: Tue Apr 17 16:07:33 1984 Date-Received: Wed, 18-Apr-84 07:31:31 EST Distribution: net Organization: Dual Systems, Berkeley, CA Lines: 31 < joseki for bugs > Here black is to play first and try to kill white. Can he do it? How? A B C D E F G H J K 10 . . . . . . . 3 2 1 9 . . . . . . . @ @ O 8 . . . O . O O @ O . 7 * . . . . . @ O . O 6 . . . . . . @ O O O 5 . . . . . . @ @ @ @ 4 . . . . . . . . . . 3 . . . . . . . . . . 2 . . . . . . . . . . 1 * . . . . . * . . . Black = @ White = O Answer moves = 1, 2, 3, ... ========================================= The best that black can do here is to force a ko on white. After black plays 3) H-10 white cannot fill at K-10. White must therefor kill the black stones by playing at G-9,10. As you can see this is a two step ko for white. Black can be happy knowing that, even if he looses the ko, he has made the best use of his 'dead' stones. Remember 'losing' the ko means 2 moves in a row someplace else. Bill Kanawyer {ucbvax,amd70,ihnp4,cbosgd,decwrl,fortune,zehntel}!dual!bill