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Subject: Re: u2600 ICC Rating List -- Feb 22

Author: James Long

Date: 19:21:20 02/22/99

Go up one level in this thread


On February 22, 1999 at 04:09:49, Will Singleton wrote:

>Under 2600 Club
>Feb 22 1999
>
>Program      ICC Blitz  Change   Games     Platform    Author
>
>ZChess           2588     +13       7      K6/266      Franck Zibi
>Gromit           2569                      ?           Frank Schneider
>XXXXII           2556                      P/266       Martin Zetner
>TDChess          2535     +21     488      P/400       Jon Baxter
>Stobor           2504     -30       8      K6/350      Tom Kerrigan
>Rookie           2491     -57     152      P/360       Marcel van Kervinck
>LambChop         2488    +100      65      P/133       Pete McKenzie
>BugChess         2445     +17      30      P/450       Erik van het Hof
>PostModernist    2431              19      K6/300      Andrew Williams
>Amateur          2414     +14      82      Mac/300     Will Singleton
>Hossa            2396     -10     329      P/350       Steffen Jakob
>Grok             2319     -18      15      K6/300      Peter Kappler
>InmiChess        2268     -63      10      Cyrix/233   Werner Inmann
>WildChild        1877                      P/200       Brian McKinley
>
>Inactive List
>
>Rival            2248                      P/266       Chris Moreton
>EXchess          2332                      Cel/400     Dan Homan
>SSEChessII       2395                      P/400       Sam Slutzky
>
>
> ICC account names that differ from the program name:
> ----------------------------------------------------------------------------
> Blik (Rookie), zchess1 (Zchess), Kerrigan (Stobor),
> Chrismo (Rival), TayxBot (SSEChessII).
> ----------------------------------------------------------------------------
>
>
>Notable
>
>Well, things have been fairly hectic this week, and not just on the
>chessboard.  But I have a feeling that when the lines of communication
>are open, and one has the will, then good things can result.  Stay tuned.
>
>LambChop has made a move, due (I hear) to the changing of lazy eval
>and some other things.  It's threatening to jump to the 2500 level soon.
>Otherwise, the list order was pretty much unchanged from last week.
>
>New highs were recorded by Zchess (2598) and TDChess (2670).  Those guys
>are pushing the envelope, no doubt about it.  TDChess played 488 games to
>take the games-played award.
>
>Some of the ratings are remarkably stable.  For example, if you discard
>LambChop (for stat purposes), the mean rating change was only about
>20 points, while the avg games-played was around 100.  Considering that
>one can lose or gain up to 30 points per game, I think that indicates
>the ratings we have here are pretty much indicative of the relative
>strengths of the programs (for their choice of opponent and time-
>control).  Your mileage may vary, but the point is that the list is
>taking on a recognizable and stable form.
>
>SSEChessII has been moved to the inactive list.  OilThink has been removed
>entirely, since it hasn't played in a few months. If anyone knows what
>Oliver is up to, let me know.
>
>New Feature
>
>I thought I'd post a position each week, taken from member submissions
>from the current week's play.  Recently on the CCC board we've had a few
>positions posted, and these have helped me track down some problems with
>my code.  Probably just chance, but I think these things are helpful
>for programmers in that they can see how their results differ from others,
>and figure out why.
>
>So members, please send me interesting games that your programs play (or
>just the positions), and perhaps we can all benefit from the analyses.
>
>To start the ball rolling, here's a position from the game Amateur-LambChop,
>played on ICC yesterday.  For some reason, Amateur declined the easy move,
>which would have won quickly, and played a tricky move that led to a loss.
>On subsequent analysis, it took Amateur 9 ply to see the right move.  During
>the actual game (blitz), it only searched about 7 ply.  I'm thinking this
>might be some bug or other weirdness.  Does your program have any trouble
>finding the right move quickly?
>
>7k/2pn1Q2/2r4p/p1qpp3/Pp1b3N/1P1P2PP/2P1R2B/7K w - -


My program's output on a P5 166, 4mb cache.
Neither the eval nor the search are complete yet...

position 001
7k/2pn1Q2/2r4p/p1qpp3/Pp1b3N/1P1P2PP/2P1R2B/7K w - - 0 1
solution is f7xd7
 2&    230       1        217  f7xd7 c6f6
 2     230       7        733  f7xd7 c6f6
 3&    252      10       1197  f7xd7 c6f6 g3g4
 3&    260      18       2611  h4f5 c5f8 f7xd7
 3     260      20       2935  h4f5 c5f8 f7xd7
 4&    297      47       8121  h4f5 e5e4 f7xd7 e4xd3 c2xd3
 4     297      64      11556  h4f5 e5e4 f7xd7 e4xd3 c2xd3
 5&    367     115      21748  h4f5 e5e4 f7xd7 c6g6 f5xd4 c5xd4 e2xe4
 5     367     152      29290  h4f5 e5e4 f7xd7 c6g6 f5xd4 c5xd4 e2xe4
 6&    371     297      58150  h4f5 c5f8 f7xd7 c6g6 f5xd4 f8f1 h2g1 e5xd4
 6     371     779     157034  h4f5 c5f8 f7xd7 c6g6 f5xd4 f8f1 h2g1 e5xd4
 7&    387    1090     220917  h4f5 c5f8 f7xd7 c6g6 g3g4 c7c5 h2xe5 d4xe5
                              e2xe5
 7     387    3580     749294  h4f5 c5f8 f7xd7 c6g6 g3g4 c7c5 h2xe5 d4xe5
                              e2xe5
 8&    393    5956    1250893  h4f5 c5f8 f7xd7 c6g6 g3g4 c7c6 h2xe5 d4xe5
                              e2xe5

my move is Nf5 (wrong)
depth:7 1/33 nodes:177311 qnodes:1083368 nps:21006

--
James



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