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Subject: Tiebreaking, WCC99

Author: Peter McKenzie

Date: 18:35:01 03/10/00


I just implemented the 'Progress' tiebreak scheme in PGNres.  This sums your
score after each round in a tournament.  This is effective against the 'Swiss
Gambit' type result.  It seems like an interesting tiebreak method, good for
Swiss tournaments only of course.

Here are results of WCC99, the first table is ordered by Score then Progress.
The second table is ordered by Score then SOP (SOP was used to tiebreak at WCC99
I believe).

There is no change in the way the ties for first and third were resolved,
although the ordering of the group on 4.5 points is different.



No. Name            1    2    3    4    5    6    7     Score  Prog
-------------------------------------------------------------------
  1 Shredder        W30+ B3+  W7+  B6=  W10= B2=  W5+     5.5  23.5
  2 Ferret          B20+ W14+ B10- W24+ B12+ W1=  W3+     5.5  22.0
  3 Fritz           B27+ W1-  B26+ W13+ B5+  W10+ B2-     5.0  21.0
  4 Cilkchess       W21+ B24+ B5-  W12= B11+ W8=  B10+    5.0  20.0
  5 Junior          W15+ B8+  W4+  B10= W3-  W6+  B1-     4.5  22.0
  6 Nimzo           B26= W22+ B16+ W1=  W7+  B5-  W9=     4.5  20.0
  7 Rebel           B25+ W11+ B1-  W19+ B6-  W13+ B8=     4.5  19.5
  8 DarkThought     B12+ W5-  B21+ W11= B16+ B4=  W7=     4.5  18.5
  9 ChessTiger      B10- W13- B29+ W22+ B14+ W18+ B6=     4.5  14.5
 10 Hiarcs          W9+  B17+ W2+  W5=  B1=  B3-  W4-     4.0  21.5
 11 LambChop        W19+ B7-  W15+ B8=  W4-  B24+ W16=    4.0  16.5
 12 Francesca       W8-  B28+ W17+ B4=  W2-  W16= B20+    4.0  15.0
 13 Virtual_Chess_X W24- B9+  W18+ B3-  W26+ B7-  W19+    4.0  15.0
 14 GromitChess     W28+ B2-  W19- B23+ W9-  W27+ B25+    4.0  14.0
 15 EUGEN           B5-  W29+ B11- W21+ B24= W20= B18+    4.0  13.5
 16 Zugzwang        W18= B23+ W6-  B17+ W8-  B12= B11=    3.5  15.0
 17 MChess          B29+ W10- B12- W16- B25= W26+ W24+    3.5  11.5
 18 Isichess        B16= W26= B13- W25+ B19+ B9-  W15-    3.0  13.5
 19 P.ConNerS       B11- W20+ B14+ B7-  W18- W21+ B13-    3.0  13.0
 20 Diep            W2-  B19- W30= B28+ W22+ B15= W12-    3.0  10.5
 21 Patzer          B4-  W27+ W8-  B15- W30+ B19- W29+    3.0  10.0
 22 Mini            W23= B6-  W28= B9-  B20- W30+ B27+    3.0   9.0
 23 Now             B22= W16- B27- W14- W28= B29+ B26+    3.0   8.0
 24 SOS             B13+ W4-  B25+ B2-  W15= W11- B17-    2.5  13.5
 25 Arthur          W7-  B30+ W24- B18- W17= B28+ W14-    2.5   9.5
 26 Ikarus          W6=  B18= W3-  W27+ B13- B17- W23-    2.0  10.5
 27 Centaur         W3-  B21- W23+ B26- W29+ B14- W22-    2.0   8.0
 28 RuyLopez        B14- W12- B22= W20- B23= W25- B30=    1.5   4.5
 29 XXXX2           W17- B15- W9-  B30+ B27- W23- B21-    1.0   4.0
 30 Neurologic      B1-  W25- B20= W29- B21- B22- W28=    1.0   3.0


No. Name             Win Draw Loss Unf.  Score Games       %   SOP
------------------------------------------------------------------
  1 Shredder          +4   =3   -0   *0    5.5     7   78.6%  29.0
  2 Ferret            +5   =1   -1   *0    5.5     7   78.6%  28.0
  3 Fritz             +5   =0   -2   *0    5.0     7   71.4%  27.5
  4 Cilkchess         +4   =2   -1   *0    5.0     7   71.4%  26.5
  5 Junior            +4   =1   -2   *0    4.5     7   64.3%  32.5
  6 DarkThought       +3   =3   -1   *0    4.5     7   64.3%  28.5
  7 Rebel             +4   =1   -2   *0    4.5     7   64.3%  28.0
  8 Nimzo             +3   =3   -1   *0    4.5     7   64.3%  27.5
  9 ChessTiger        +4   =1   -2   *0    4.5     7   64.3%  23.5
 10 Hiarcs            +3   =2   -2   *0    4.0     7   57.1%  33.5
 11 LambChop          +3   =2   -2   *0    4.0     7   57.1%  27.0
 12 Francesca         +3   =2   -2   *0    4.0     7   57.1%  26.5
 13 Virtual_Chess_X   +4   =0   -3   *0    4.0     7   57.1%  24.5
 14 GromitChess       +4   =0   -3   *0    4.0     7   57.1%  22.0
 15 EUGEN             +3   =2   -2   *0    4.0     7   57.1%  21.0
 16 Zugzwang          +2   =3   -2   *0    3.5     7   50.0%  26.5
 17 MChess            +3   =1   -3   *0    3.5     7   50.0%  19.5
 18 P.ConNerS         +3   =0   -4   *0    3.0     7   42.9%  25.5
 19 Isichess          +2   =2   -3   *0    3.0     7   42.9%  23.5
 20 Diep              +2   =2   -3   *0    3.0     7   42.9%  22.0
 21 Patzer            +3   =0   -4   *0    3.0     7   42.9%  20.5
 22 Mini              +2   =2   -3   *0    3.0     7   42.9%  19.5
 23 Now               +2   =2   -3   *0    3.0     7   42.9%  17.0
 24 SOS               +2   =1   -4   *0    2.5     7   35.7%  28.5
 25 Arthur            +2   =1   -4   *0    2.5     7   35.7%  20.0
 26 Ikarus            +1   =2   -4   *0    2.0     7   28.6%  25.0
 27 Centaur           +2   =0   -5   *0    2.0     7   28.6%  21.0
 28 RuyLopez          +0   =3   -4   *0    1.5     7   21.4%  20.5
 29 XXXX2             +1   =0   -6   *0    1.0     7   14.3%  21.0
 30 Neurologic        +0   =2   -5   *0    1.0     7   14.3%  19.5




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