 | |
Correspondence Chess League of America | |
Serving the North American correspondence chess community since 1897 | |
CCLA's RATING SYSTEM |
| The following chart is the graphical representation of the original (1947) Hotchkiss-Wilcock linear equations. This statistical sytem, the forerunner of all numerical rating systems in use today, is still utilized by CCLA. Class names and 200-point intervals used by FIDE were adopted in 1980. Points gained by one player are lost by the other, except for challenge matches of more than two games. |
| Rating difference is the difference in ratings at the time the game is concluded Column 1. |
| If the higher-rated player wins, he gains the number of points listed in column 2 and his opponent loses the same. |
| If the lower-rated player wins, he gains the number of points listed in column 3 and his opponent loses the same. |
| If the result is a draw, then the lower-rated player gains the number of points listed in column 4 and the higher-rated player loses the same. |
| |||
1 | 2 | 3 | 4 | Players' Rating Difference |
Higher- Rated Wins |
Lower- Rated Wins |
Draw |
|---|---|---|---|
| 0-19 | 16 | 16 | 0 |
| 20-39 | 15 | 17 | 1 |
| 40-59 | 14 | 18 | 2 |
| 60-79 | 13 | 19 | 3 |
| 80-99 | 12 | 20 | 4 |
| 100-119 | 11 | 21 | 5 |
| 120-139 | 10 | 22 | 6 |
| 140-159 | 9 | 23 | 7 |
| 160-179 | 8 | 24 | 8 |
| 180-199 | 7 | 25 | 9 |
| 200-219 | 6 | 26 | 10 |
| 220-239 | 5 | 27 | 11 |
| 240-259 | 4 | 28 | 12 |
| 260-279 | 3 | 29 | 13 |
| 280 and up | 2 | 30 | 14 |
| CLASS RATINGS | TITLES + |
| 2200 and up Master | G = Grandmaster * |
| 2000-2199 Expert | I = International Master * |
| 1800-1999 Class A | S = Senior Master 2350 & up |
| 1600-1799 Class B | M = Master 2275 & up |
| 1400-1599 Class C | E = Expert 2100 & up |
| 1200-1399 Class D | |
| below 1200 Class E | |
| + require five years' CCLA membership | |
| * awarded by the I.C.C.F. | |
| To CCLA Home Page | Tournament Director : Jerry Honn |
| To CCLA Email Tournaments | Email: ccla@insightbb.com |