RWBC CCRAT results

03.12.2025

Conditions

Hardware:

Ryzen7 5700G 8*3.8 Ghz (16HT), 32 GB DDR4 Ram

System:

WIN 11 Pro

Software:

CuteChessGUI EXPER 3.5.1 (advanced CuteChess fork/branch by 'alwey' + some changes by me), SCID vs PC 4.25, Ordo 1.26.

Startpositions:

Fixed openings from my 3M_rand.pgn (1185 opening lines with 6 plies) for programs rated below 3500.
Fixed openings from UHO_2024_6mvs_+100_+109 (4740 opening lines with 12 plies) mixed 50:50 with 3M_rand, if majority of programs
participating in a tourney are above 3500.
All games played twice with reversed colours for each line.

Settings:

Time control (adapted to CCRL Blitz spec according to used hardware) 1:20 + 1s (+20ms GUI margin), Hash 256MB(main) if supported.
Ponder off, Resign set to 900 for 5 moves both sides. Concurreny currently set to 4.
Draw adjudication at 100/10/20 (moves/length/score) and at max. move 240 (those results will be manually checked later and eventually adjusted).

Tablebases up to 5 men, if supported, e.g. Syzygy, Nalimov, Scorpio or Gaviota bases.
Szygzy adjudication only if all participants of a match/tourney support Syzygy themselves.

Since CCRAT-8 changed to a minimal Syzygy adjudication for tournaments of all rating ranges no matter if TBS are supported by the participants!
(KR-KR, KN-KN, KB-KB, KN-KB, KN-K, KB-K)

Result display/info:

The result table output is ordo calculated with 200 simuls.

GAMES(pgn download) of collected CCRAT 1-14 rating tournaments

CCRAT-14 (2025-12-02)

   # PLAYER               :   RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 BlackCore 2.0 x64    :   102.33  46.47    87.0     132  65.91   64   46   22  34.85
   2 FabChess 1.16 x64    :    45.54  44.23    75.5     132  57.20   52   47   33  35.61
   3 Monty 0.1.0 x64      :    31.16  44.54    72.5     132  54.92   62   21   49  15.91
   4 ice4 v5 x64          :    28.77  42.87    72.0     132  54.55   54   36   42  27.27
   5 Wasp 1.02 x64        :   -28.28  41.35    60.0     132  45.45   40   40   52  30.30
   6 Cheese 3.1.0 x64     :   -62.04  43.18    53.0     132  40.15   31   44   57  33.33
   7 Nemo 1.0.1 x64       :  -117.48  41.88    42.0     132  31.82   24   36   72  27.27

White advantage = 25.57 +/- 13.83
Draw rate (equal opponents) = 31.17 % +/- 2.20
Errors/bugs
-
Comments:

GAMES(pgn download) of collected CCRAT 1-13 rating tournaments

CCRAT-13 (2025-11-29)

   # PLAYER             :   RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Petrel 3.1 x64     :    65.92  15.43   370.0     600  61.67  229  282   89  47.00
   2 Stash 32.6 x64     :    37.44  28.55    92.0     200  46.00   43   98   59  49.00
   3 Lunar 0.2.1 x64    :    14.04  30.30    85.5     200  42.75   29  113   58  56.50
   4 Senpai 2.0 x64     :  -117.40  32.91    52.5     200  26.25   17   71  112  35.50

White advantage = 41.06 +/- 10.79
Draw rate (equal opponents) = 52.17 % +/- 2.19
Errors/bugs
-
Comments:

CCRAT-12 (2025-04-18)

   # PLAYER                     :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Laser 1.1 x64              :   17.53  41.51    53.5     100  53.50   43   21   36  21.00
   2 Minke 0.0.1 17125d2 x64    :    2.50  44.43    50.5     100  50.50   40   21   39  21.00
   3 Velvet 1.2.0 x64           :  -20.04  43.44    46.0     100  46.00   31   30   39  30.00

White advantage = 91.28 +/- 26.33
Draw rate (equal opponents) = 25.19 % +/- 3.90
Errors/bugs
Player: Minke 0.0.1 17125d2 x64
   "Loss: Black disconnects": 1
   "Loss: White disconnects": 1
   "Loss: White makes an illegal move: none": 1
Comments:

- Minke test version - result for the illegal move game was changed to draw, opponent had no mating material.

- player Panda 1.0 3a63a32 x64 removed from pgn and rating calculation, because it used 4 threads instead of default 1 due to a bug

CCRAT-11b (2025-02-25)

UHO part
   # PLAYER               :   RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Clarity 7.2.0 x64    :   242.94  34.90   131.0     200  65.50   84   94   22  47.00
   2 Cinder 0.1.2 x64     :    86.02  15.07   484.0     800  60.50  310  348  142  43.50
   3 akimbo 0.7.0 x64     :   -78.70  31.19    67.5     200  33.75   22   91   87  45.50
   4 Devre 4.0 x64        :  -115.66  33.86    60.5     200  30.25   20   81   99  40.50
   5 BlackCore 6.0 x64    :  -134.60  32.41    57.0     200  28.50   16   82  102  41.00

White advantage = 216.13 +/- 11.58
Draw rate (equal opponents) = 70.38 % +/- 2.38
Errors/bugs
-
Comments:

CCRAT-11a (2025-02-23)

3M_rand part
   # PLAYER               :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Clarity 7.2.0 x64    :  151.63  23.32   124.0     200  62.00   56  136    8  68.00
   2 Cinder 0.1.2 x64     :   65.02  12.32   486.5     800  60.81  243  487   70  60.88
   3 akimbo 0.7.0 x64     :  -44.48  21.41    70.0     200  35.00    9  122   69  61.00
   4 Devre 4.0 x64        :  -72.37  26.36    63.0     200  31.50    1  124   75  62.00
   5 BlackCore 6.0 x64    :  -99.80  30.39    56.5     200  28.25    4  105   91  52.50

White advantage = 34.43 +/- 7.40
Draw rate (equal opponents) = 76.88 % +/- 2.09
Errors/bugs
-
Comments:

- Cinder 0.1.1 renamed to 0.1.2 (both identical strength wise, but 0.1.1 had an uci output bug, which prevented evals/depths being saved to pgn)

CCRAT-10 (2025-01-23)

   # PLAYER                 :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Marvin 5.2.0 x64       :   62.96  51.14    46.0      80  57.50   28   36   16  45.00
   2 RukChess 3.0 x64       :   53.95  54.41    45.0      80  56.25   28   34   18  42.50
   3 Seredina 1.2c x64      :    9.51  21.82   247.5     480  51.56  146  203  131  42.29
   4 Avalanche 1.4.0 x64    :  -17.07  57.80    37.0      80  46.25   18   38   24  47.50
   5 Halogen 10 x64         :  -25.98  51.98    36.0      80  45.00   15   42   23  52.50
   6 Pedantic 1.1.0 x64     :  -39.43  51.37    34.5      80  43.13   20   29   31  36.25
   7 Priessnitz 2.0 x64     :  -43.95  59.31    34.0      80  42.50   22   24   34  30.00

White advantage = 33.50 +/- 11.03
Draw rate (equal opponents) = 43.24 % +/- 2.22
Errors/bugs
Player: Halogen 10 x64
   "Loss: White makes an illegal move: a1a1": 1
Comments:

- Halogen 10 send an illegal move a1a1 in a TB position.
The cause could be verified as a corrupt (KRPvKB.rtbw) syzygy 5men file, which was needed for an underpromotion case in that specific position.
(8/1P3k2/3Kp3/8/8/8/7r/8 w - - 0 69)
The corrupt file was replaced and the result was changed to a win in the pgn file.

CCRAT-9 (2025-01-22)

   # PLAYER               :   RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Seredina 1.2c x64    :   150.46  21.89   405.0     560  72.32  314  182   64  32.50
   2 Seer 1.2.1 x64       :    21.47  59.27    26.0      80  32.50    9   34   37  42.50
   3 Winter 0.8 x64       :    16.42  63.33    25.5      80  31.88    9   33   38  41.25
   4 Velvet 3.0.0 x64     :     6.16  65.28    24.5      80  30.63   12   25   43  31.25
   5 Altair 4.0.0 x64     :    -4.34  66.44    23.5      80  29.38   13   21   46  26.25
   6 BlackCore 2.0 x64    :   -15.10  65.47    22.5      80  28.13    7   31   42  38.75
   7 ice4 v5 x64          :   -74.08  70.54    17.5      80  21.88    6   23   51  28.75
   8 Senpai 1.0 x64       :  -100.99  72.94    15.5      80  19.38    8   15   57  18.75

White advantage = 30.14 +/- 12.94
Draw rate (equal opponents) = 39.84 % +/- 2.49
Errors/bugs
-
Comments:

CCRAT-8 (2025-01-12)

   # PLAYER               :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Frolic 2.5 x64       :   93.69  23.50   325.5     500  65.10  267  117  116  23.40
   2 Counter 3.0 x64      :   50.99  55.11    44.0     100  44.00   35   18   47  18.00
   3 Fruit 2.1            :   25.59  56.13    40.5     100  40.50   30   21   49  21.00
   4 Asymptote 0.5 x64    :  -39.70  58.51    32.0     100  32.00   23   18   59  18.00
   5 Leorik 2.2 x64       :  -43.78  56.05    31.5     100  31.50   16   31   53  31.00
   6 Philou 3.7.1 x64     :  -86.78  56.30    26.5     100  26.50   12   29   59  29.00

White advantage = 35.48 +/- 14.64
Draw rate (equal opponents) = 25.47 % +/- 1.90
Errors/bugs
-
Comments:

- Frolic 2.5 x64 played with 32MB hash, because it has a fixed value and changing it is not yet implemented (despite available uci option)

CCRAT-7 (2025-01-07)

   # PLAYER                       :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Fruit 2.1                    :   61.90  37.15   136.5     200  68.25  115   43   42  21.50
   2 Euwe 2.0.0 x64               :    6.13  38.48   122.0     200  61.00   98   48   54  24.00
   3 GreKo 2017 x64               :    4.29  36.68   121.5     200  60.75  103   37   60  18.50
   4 Potential srw bb19e54 x64    :  -72.32  18.20   220.0     600  36.67  156  128  316  21.33

White advantage = 10.12 +/- 12.53
Draw rate (equal opponents) = 22.47 % +/- 1.72
Errors/bugs
Player: Potential srw bb19e54 x64
   "Loss: Black makes an illegal move: a5b5": 1
   "Loss: Black makes an illegal move: d1b6b": 1
   "Loss: Black makes an illegal move: f8h6": 1
   "Loss: Black's connection stalls": 3
   "Loss: White makes an illegal move: a8a8": 1
   "Loss: White's connection stalls": 5
Player: GreKo 2017 x64
   "Loss: Black makes an illegal move: a8a8": 1
   "Loss: White makes an illegal move: a8a8": 3
Comments:

- GreKo 2017 sends 'material draw' and plays an illegal move 'a8a8' also in positions not covered by FIDE rules.
position fen 1b6/8/2K2N2/8/8/8/4k3/8 w - - 0 164 go wtime 20000 btime 20000 winc 1000 binc 1000 1/2-1/2 {Insufficient material} bestmove a8a8

In later versions it sends a legal bestmove and plays on. Note that this bug was present in an earlier version 10.3 too and had been fixed already, but obviously crept in again. https://talkchess.com/viewtopic.php?p=554431#p554431

- Potential test version with some bugs - stalling in dead lost positions and other bugs.

CCRAT-6 (2025-01-06)

   # PLAYER                       :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Lux 4.1 x64                  :   60.97  50.83    68.5     120  57.08   42   53   25  44.17
   2 Peacekeeper 1.30 x64         :   37.31  46.12    64.5     120  53.75   53   23   44  19.17
   3 Potential srw bb19e54 x64    :   10.97  23.73   249.0     480  51.88  190  118  172  24.58
   4 Monolith 0.4 x64             :  -21.26  44.33    54.5     120  45.42   46   17   57  14.17
   5 Coiled 0.5 x64               :  -87.99  50.18    43.5     120  36.25   31   25   64  20.83

White advantage = 6.01 +/- 13.37
Draw rate (equal opponents) = 25.05 % +/- 2.00
Errors/bugs
Player: Potential srw bb19e54 x64
   "Loss: Black makes an illegal move: c7e5r": 1
   "Loss: Black's connection stalls": 3
   "Loss: White makes an illegal move: a8a8": 1
   "Loss: White's connection stalls": 3
Player: Lux 4.1 x64
   "Loss: Black loses on time": 1
   "Loss: White loses on time": 1
Comments:

- Lux 4.1 time losses in two games over 160 moves with a long move sequence into the 50 moves draw counter (35-40 moves already).
It seems it always used very slightly more time than the inc gave, even after 140 moves.

- Potential test version with some bugs - stalling in dead lost positions and other bugs.

CCRAT-5 (2025-01-04)

   # PLAYER                       :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Quazar 0.3 x64               :   45.03  26.07   175.0     300  58.33  140   70   90  23.33
   2 Potential srw d00d895 x64    :   13.43  26.56   157.5     300  52.50  112   91   97  30.33
   3 Tcheran 3.0 x64              :  -23.36  27.15   137.0     300  45.67   93   88  119  29.33
   4 FoxSEE v8.2 x64              :  -35.10  25.03   130.5     300  43.50   97   67  136  22.33

White advantage = 43.17 +/- 12.36
Draw rate (equal opponents) = 26.99 % +/- 1.85
Errors/bugs
Player: Potential srw d00d895 x64
   "Loss: Black makes an illegal move: e3d3": 1
Comments:

- Potential test version with some bugs.

CCRAT-4 (2025-01-01)

   # PLAYER                       :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Glass 2.0 x64                :   90.25  62.43    57.5      80  71.88   51   13   16  16.25
   2 Leorik 2.1 x64               :   58.69  66.71    54.5      80  68.13   42   25   13  31.25
   3 Hamsters 0.7.1               :   24.26  64.12    51.0      80  63.75   43   16   21  20.00
   4 RedQueen 0.9.5 x64           :  -26.59  65.01    45.5      80  56.88   38   15   27  18.75
   5 Critter 0.40                 :  -71.09  58.93    40.5      80  50.63   32   17   31  21.25
   6 Potential srw d00d895 x64    :  -75.51  27.70   151.0     400  37.75  108   86  206  21.50

White advantage = 32.62 +/- 16.33
Draw rate (equal opponents) = 22.91 % +/- 2.13
Errors/bugs
Player: Potential srw d00d895 x64
   "Loss: White makes an illegal move: a8a8": 2
Player: RedQueen 0.9.5 x64
   "Loss: Black loses on time": 1
   "Loss: White loses on time": 1
Comments:

- Various RedQueen versions sometimes (rarely) lose on time

- Potential test version with some bugs

CCRAT-3 (2024-12-22)

   # PLAYER                       :   RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Admete 1.5.0 x64             :   117.01  40.81   136.0     200  68.00  112   48   40  24.00
   2 Hamsters 0.6                 :    88.43  36.00   127.5     200  63.75  104   47   49  23.50
   3 Counter 2.0.1 x64            :    57.51  39.43   118.0     200  59.00   99   38   63  19.00
   4 Potential dev 3a9f418 x64    :   -21.61  36.51    93.0     200  46.50   74   38   88  19.00
   5 Diablo 0.5.1 x64             :  -118.08  42.50    63.5     200  31.75   38   51  111  25.50
   6 Diablo 0.5.1                 :  -123.28  41.19    62.0     200  31.00   34   56  110  28.00

White advantage = 23.95 +/- 12.39
Draw rate (equal opponents) = 25.93 % +/- 1.98
Errors/bugs
Player: Potential dev 3a9f418 x64
   "Loss: White disconnects": 1
Player: Counter 2.0.1 x64
   "Loss: Black makes an illegal move: a5a4": 1
   "Loss: Black makes an illegal move: g4g3": 1
   "Loss: Black makes an illegal move: g8h7": 1
   "Loss: Black makes an illegal move: h5g6": 1
   "Loss: White makes an illegal move: f7d5": 1
   "Loss: White makes an illegal move: h3f1": 1
Comments:

- Counter 2.0.1 ignores N underpromotions and treats 'em as Q promotions
(games of that version removed from the CCRAT rating list, as base games from CCRL + CEGT were inconsistently adjudicated despite the resulting illegal moves - bug fixed in 2.0.2)

- Potential test version with some bugs

CCRAT-2 (2024-12-21)

   # PLAYER                       :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Potential dev 3a9f418 x64    :   45.53  16.31   250.5     400  62.63  213   75  112  18.75
   2 Diablo 0.5.1 x64             :  -45.53  16.31   149.5     400  37.38  112   75  213  18.75

White advantage = 29.09 +/- 16.00
Draw rate (equal opponents) = 19.62 % +/- 1.98
Errors/bugs
Player: Potential dev 3a9f418 x64
   "Loss: Black disconnects": 7
   "Loss: White disconnects": 1
Comments:

- Potential test version with some bugs

CCRAT-1 (2024-12-20)

   # PLAYER                  :  RATING  ERROR  POINTS  PLAYED    (%)    W    D    L   D(%)
   1 Stash 10.0 x64          :  101.33  25.18   246.0     360  68.33  211   70   79  19.44
   2 Rudim 1.4 x64           :  -22.42  24.60   165.5     360  45.97  120   91  149  25.28
   3 Chers 0.3.2 x64         :  -31.48  25.16   159.5     360  44.31  108  103  149  28.61
   4 MinimalChess 0.3 x64    :  -47.43  25.04   149.0     360  41.39   92  114  154  31.67

White advantage = 14.12 +/- 10.72
Draw rate (equal opponents) = 27.63 % +/- 1.74
Errors/bugs
Player: Chers 0.3.2 x64
   "Loss: White's connection stalls": 1
Comments:

- Chers 0.3.2 bug verified and reproduced
3rr1k1/1p3pp1/pqnbbn1p/4p3/2ppP1P1/PP1P1N1P/1BPQNPB1/3RR1K1 w - - 0 19 (hangs always in this position)