The script looked at all (currently 53 316) games in the ratings database and tracked statistics by the ratings difference between the two players (to the nearest hundred points), and by the rating of each player (again, to the nearest hundred points).
The first table shows the win ratios (multiplied by 1000) in each category, along with the mean by difference and the value predicted by the Elo model.
The second table shows how many games were played in each category. Only categories with at least 50 games played appear in either table.
It has been noted that the presence of robot players, who play differently in many respects from human players (they play more games, against a wider range of opponents, and use different strategy) skews results. I have therefore also compiled tables of statistics not including games involving robot players.
John Chew (poslfit@gmail.com)
Diff Elo Avg 2c 3c 4c 5c 6c 7c 8c 9c 10c 11c 12c 13c 14c 15c 16c 17c 18c 19c 20c
-13c 999 958 949
-12c 999 982 981 964
-11c 999 961 974 970 980 975
-10c 999 969 969 957 991 988 927
-9c 999 954 925 960 967 957 972 949
-8c 997 932 964 946 933 932 897 887 933
-7c 993 924 890 949 904 921 949 891 948 962 913
-6c 983 900 870 887 884 795 924 902 935 866 878 916 883 931
-5c 961 884 948 898 800 847 832 874 913 915 864 869 853 901 818
-4c 921 835 872 847 843 809 794 769 841 876 832 853 850 792 739 814 860
-3c 855 752 754 713 728 739 713 716 708 713 795 781 738 779 727 736 768 748
-2c 760 679 632 709 668 594 672 698 674 655 680 733 674 670 696 686 664 629 641
-1c 638 604 558 609 504 567 561 591 600 610 592 597 630 623 644 615 593 613 579 544
0c 500 500 492 522 491 492 519 470 492 514 512 481 497 497 501 490 509 493 504 498 517
1c 361 395 387 432 472 429 456 411 390 407 392 388 381 367 344 385 409 402 405 470 568
2c 239 320 328 283 351 380 323 310 321 320 322 271 341 315 291 326 340 349 387
3c 144 247 205 282 281 256 277 292 294 259 213 221 228 232 277 256 246 264
4c 78 164 128 114 173 185 207 215 177 118 151 161 158 198 233 220 145
5c 38 115 31 121 137 180 162 133 82 81 142 137 122 137 140
6c 16 99 120 95 150 172 135 90 64 135 118 93 129 50
7c 6 75 76 71 85 82 53 100 74 34 75
8c 2 67 39 34 58 56 102 89 95 107
9c 0 45 60 65 17 39 37
10c 0 30 37 40 8 10 65
11c 0 38 16 22 41
12c 0 17 35
13c 0 41 53
Diff Tot 2c 3c 4c 5c 6c 7c 8c 9c 10c 11c 12c 13c 14c 15c 16c 17c 18c 19c 20c -13c 2 1 -12c 3 1 1 -11c 4 1 1 1 1 -10c 7 1 1 1 2 1 -9c 8 1 2 2 1 1 1 -8c 10 1 2 2 1 1 1 1 -7c 13 1 1 1 2 2 2 1 1 1 -6c 21 1 1 1 1 1 4 5 2 2 1 1 1 -5c 30 1 1 1 2 1 2 7 5 3 2 2 1 1 -4c 41 1 1 2 2 3 2 3 8 6 4 3 3 1 1 2 -3c 61 1 1 2 2 2 4 3 4 9 7 4 8 6 3 2 1 -2c 98 1 1 2 3 3 4 5 4 6 9 9 12 15 10 8 3 2 -1c 133 1 1 2 3 3 5 5 6 7 7 10 12 13 20 13 13 7 3 0c 140 1 2 2 3 4 4 6 5 5 7 7 10 11 11 25 14 13 8 3 1c 133 1 1 3 3 3 5 6 5 7 7 10 13 13 19 15 12 8 2 1 2c 98 1 1 2 3 3 4 5 4 6 8 10 12 14 10 8 4 2 3c 61 1 1 2 3 2 3 3 4 10 7 5 8 6 4 2 1 4c 41 1 1 1 2 3 2 3 7 7 3 3 3 1 1 2 5c 30 1 1 1 2 2 2 7 6 3 2 2 1 1 6c 21 1 1 1 1 1 4 5 2 2 2 1 1 7c 13 1 1 1 2 3 2 1 1 1 8c 10 1 1 2 3 1 1 1 1 9c 8 1 2 2 1 1 10c 7 1 1 1 2 1 11c 4 1 1 1 12c 3 1 13c 2 1