RWBC Live Class C at 14:30 GMT+1

[Günther Simon]

Geschrieben von:/Posted by: Günther Simon at 10 July 2004 14:11:15:

IP 2 : 80.145.228.19
Port : 17088
190. Round 10   39.DanChess_106e     -  38.Fruit_15JR          -NOTHING DONE
191. Round 10   12.Trace_129         -  40.Snitch_0366         -NOTHING DONE
192. Round 10   41.Booot_403         -   9.Djinn_0870          -NOTHING DONE
193. Round 10    1.Hagrid_0756       -  37.Zappa_070X          -NOTHING DONE
194. Round 10   15.Scidlet_36        -   3.GnuChess_40TM       -NOTHING DONE
195. Round 10   13.Greko_281         -  22.Holmes_0829e        -NOTHING DONE
196. Round 10   10.Dorky_348         -  36.Jonny_262           -NOTHING DONE
197. Round 10   30.Nullmover_025     -  28.OliThink_411        -NOTHING DONE
198. Round 10    2.Fortress_162      -  17.Alarm_0931          -NOTHING DONE
199. Round 10   27.Sunsetter_C10     -   4.Ghost_013           -NOTHING DONE
200. Round 10   19.Monarch2002_04c   -   6.LadyGambit_10       -NOTHING DONE
201. Round 10    7.EnginMax_511c     -  23.Genesis_201b01      -NOTHING DONE
202. Round 10    8.LaDameBlanche_20c -  24.BigLion_223i        -NOTHING DONE
203. Round 10    5.Ax_08             -  16.MrChess_21          -NOTHING DONE
204. Round 10   14.Madeleine_02      -  29.Faile_14DC          -NOTHING DONE
205. Round 10   31.Freyr_1067        -  32.Armageddon2_247     -NOTHING DONE
206. Round 10   18.DrChess_204b      -  34.Gully_215pl10       -NOTHING DONE
207. Round 10   35.SmallPotato_061   -  21.Plywood_173         -NOTHING DONE
208. Round 10   42.Chispa_4032       -  26.RDChess_323         -NOTHING DONE
209. Round 10   20.ThorsHammer_20    -  11.Taktix_223i         -NOTHING DONE
210. Round 10   25.Asterisk_04b      -  33.Matheus_23          -NOTHING DONE

[Günther Simon]

Geschrieben von:/Posted by: Günther Simon at 10 July 2004 15:22:45:
Als Antwort auf:/In reply to: RWBC Live Class C at 14:30 GMT+1 geschrieben von:/posted by: Günther Simon at 10 July 2004 14:11:15:

IP 2 : 80.145.228.195
Port : 17088

[Günther Simon]

Geschrieben von:/Posted by: Günther Simon at 10 July 2004 21:54:31:
Als Antwort auf:/In reply to: RWBC Live Class C at 14:30 GMT+1 geschrieben von:/posted by: Günther Simon at 10 July 2004 14:11:15:

----------------------------------------------------------
Game No.  White                Black               Result   
----------------------------------------------------------
   198    FORTRESS_162         ALARM_0931           1-0     
   197    NULLMOVER_025        OLITHINK_411         1-0     
   196    DORKY_348            JONNY_262            1-0     
   195    GREKO_281            HOLMES_0829E         1-0     
   194    SCIDLET_36           GNUCHESS_40TM        1-0     
   193    HAGRID_0756          ZAPPA_070X           0-1     
   192    BOOOT_403            DJINN_0870           1-0     
   191    TRACE_129            SNITCH_0366          0-1     
   190    DANCHESS_106E        FRUIT_15JR           0-1
note: Djinn blundered in a drawish rook endgame(rook exchange led
to an immediately lost pawn endgame)
more information later...

[Tom Likens]

Geschrieben von:/Posted by: Tom Likens at 11 July 2004 00:23:15:
Als Antwort auf:/In reply to: Results so far geschrieben von:/posted by: Günther Simon at 10 July 2004 21:54:31:

----------------------------------------------------------
note: Djinn blundered in a drawish rook endgame(rook exchange led
to an immediately lost pawn endgame)
more information later...

>Game No.  White                Black               Result   
>----------------------------------------------------------
>   198    FORTRESS_162         ALARM_0931           1-0     
>   197    NULLMOVER_025        OLITHINK_411         1-0     
>   196    DORKY_348            JONNY_262            1-0     
>   195    GREKO_281            HOLMES_0829E         1-0     
>   194    SCIDLET_36           GNUCHESS_40TM        1-0     
>   193    HAGRID_0756          ZAPPA_070X           0-1     
>   192    BOOOT_403            DJINN_0870           1-0     
>   191    TRACE_129            SNITCH_0366          0-1     
>   190    DANCHESS_106E        FRUIT_15JR           0-1
Hey Günther,
If you would send me the log file and any winboard debug files you may have,
it would be greatly appreciated.
thanks in advance,
--tom

[Günther Simon]

Geschrieben von:/Posted by: Günther Simon at 11 July 2004 17:39:24:
Als Antwort auf:/In reply to: Re: Results so far geschrieben von:/posted by: Tom Likens at 11 July 2004 00:23:15:


note: Djinn blundered in a drawish rook endgame(rook exchange led

to an immediately lost pawn endgame)
more information later...

Hey Günther,
If you would send me the log file and any winboard debug files you may have,
it would be greatly appreciated.
thanks in advance,
--tom

@Tom: I send you the log and debug soon!
(From a Human POV the move is a grave blunder, but it seems it
is not obviously for some chess programs?
BTW F8 immediately gives around -4 for ...Rxd4?? and _never_ considers
it at all when analyzing that postion.)
I am not sure anymore if the position was still drawish before 36...Rxd4??,
but anyway this move loses at once, but to my astonishment several programs
placed around Djinn in Class C, showed the same problem to avoid it?
Djinn_0870:    avoids ...Rxd4?? after 56.3 sec on my PIV 2.67Ghz (Rc5 -0.52)
DanChess_106e: avoids it after 3.4 seconds! (Rc5 -0.33)
Scidlet_36:    not avoiding in 90 seconds (-0.27)
Trace_129:     not avoiding in 90 seconds (-0.59)
Zappa_070X:    not avoiding in 90 seconds (-0.11)
GreKo_281:     avoids it in 83.4 seconds (Rc5 -1.55)
BTW after analyzing a bit more it seems 35...Rc4? is perhaps already
a losing error, as it loses an important tempo after 36.Rd4 etc...
(diagram below first one)
Booot_403 vs. Djinn_0870
RWBC Class B round 10
6k1/5p2/p3p1p1/8/2rR1P2/K1P5/1P3P2/8 b - - 0 36 a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h generated with GenDiag 1.8 (C) 2002 by Andreas Herrmann 
avoid ...Rxd4 (immediately lost pawn endgame - not sure though if the endgame is lost anyway?)

Even more interesting might be to analyze that position,
avoiding Rc4:
Booot_403 vs. Djinn_0870
RWBC Class B round 10
6k1/3R1p2/p1r1p1p1/8/5P2/K1P5/1P3P2/8 b - - 0 35 a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h generated with GenDiag 1.8 (C) 2002 by Andreas Herrmann 
...Rc4 seems to lose a very important tempo (Kg7, or perhaps Kf8 have perhaps drawing chances?)

[Tom Likens]

Geschrieben von:/Posted by: Tom Likens at 12 July 2004 01:33:12:
Als Antwort auf:/In reply to: Interesting R+pawns endgame test position (Booot vs. Djinn) geschrieben von:/posted by: Günther Simon at 11 July 2004 17:39:24:

Gunther,
Thanks for the detailed analysis. I look this over tonight to see
why Djinn is so fond of ...Rxd4, which as you pointed out, is a
colossal blunder. I'll post any revelations I reach here. I may
also post this to CCC, to see what the august minds over there think
of it.
regards,
--tom