RAOUL@JPL-VLSI.ARPA (07/11/84)
From: Alvin Wong <RAOUL@JPL-VLSI.ARPA> I am getting alot of duplicate messages from mclure@Sri-unix via chess@sri-unix with incremental header information as below. I also received about five or six copies of his bitmap move generator report. Please check your distribution algorithm. Alvin >From: MAILER 11-JUL-1984 09:58 >To: RAOUL >Subj: [Netmail From: mclure @ Sri-Unix.arpa] Belle/Blitz sacrifice > >Mail-From: ARPAnet host SRI-UNIX rcvd at Wed Jul 11 09:58-PDT >Received: from Lanl.arpa.arpa by Sri-Unix.arpa with TCP; 11 Jul 84 8:46-PDT >Date: 11 Jul 1984 09:29:18-MDT >From: mclure@Sri-Unix >Received: from Lanl.arpa.arpa by Sri-Unix.arpa with TCP; 11 Jul 84 8:07-PDT >Date: 11 Jul 1984 08:50:17-MDT >From: mclure@Sri-Unix >Received: from Lanl.arpa.arpa by Sri-Unix.arpa with TCP; 11 Jul 84 7:28-PDT >Date: 11 Jul 84 2:49-PDT >From: mclure @ Sri-Unix.arpa >To: chess@Sri-Unix >Subject: Belle/Blitz sacrifice > >The Belle/Blitz sacrifice mentioned in an earlier message >was made in the following position with Black (Belle) to >move: > > BR ** BB ** -- BK -- BR > BP BP BP BP BQ -- BP -- > -- ** -- ** -- ** BP ** > ** -- BB -- ** -- ** -- > -- ** WB BN BN ** -- ** > ** -- WN -- ** -- ** -- > WP WP WP WP -- WP WP WP > WR -- WB WQ ** WR WK -- > >Just out of curiousity, I handed this position to my faithful Prestige >and put it in "infinite" search mode where it just keeps searching >deeper and deeper to see how long it would take to find the solution. > >Presumably Belle found it in a reasonable amount of time, say below >5 minutes, because it was playing under tournament time controls. > >Note that Prestige is much, much slower than Belle obviously. It >runs on a tiny 4-mhz 6502. Still, the Spracklens have been able to >come up with a nice little program that can play good chess. > >It took Prestige 57 minutes to find Belle's move: Rxh2! >This was a 6-ply search and Prestige felt it was 2.67 pawns ahead after >Rxh2. The principal variation is: Rxh2, Nxe4, Qh4, Ng3, Qxg3, Bd5. > > Stuart ------