Rating system
Gomoku rating system is adopted from the Polish one – because it enables better comparison of players‘ quality of play.
- Number of points gained (i.e. rating) of a player is distinguished between:
- established (E, Established)
- temporary (T, Novice)
- In order to get an established rating, the player has to:
- play at least 10 games against players whose rating is established.
- win at least 3 points against players whose rating is established.
- Changes of the rating:
- if two E players play against each other, the amount of points gained is counted according to the Figure No.1.
- if a T player plays against an E player, the amount of points gained is counted only for a T player according to the formula in Article No.5.
- a game between two T players isn’t counted towards rating at all.
- Player’s rating is changed once the tournament is finished. Each player enters the tournament with his/her old rating which does not change during the tournament. T player is considered as a T player until the end of the tournament even if (s)he accomplishes Article No.2 during the tournament.
- For E players is valid the following formula:
- Rn = Rst + (250 * (W-L)/N)
- Due to absence of rating system are the first two tournaments considered as established. The following formula has been chosen for establishing the rating:
- Rn = 1600 + (400 * (W-L)/N)
- The amount of points gained between E players is counted according to the following formula:
- Rn = Ro + G
Rn = new rating
Rst = average rating of E players
W = number of won games against E players
L = number of lost games against E players
N = number of games played against E players
Rn = new rating
W = number of won games in both tournaments
L = number of lost games in both tournaments
N = number of played games
Rn = new rating
Ro = old rating
Z = the amount of points gained/lost according to the Figure No.1
Figure No.1
Rating difference | The amount of points gained by the player with higher rating in case of he wins | The amount of points gained by the player with lower rating in case he wins | The amount of points gained by the player with lower rating in case of a draw |
---|---|---|---|
0 - 10 | +16 | +16 | +0 |
11 - 32 | +15 | +17 | +1 |
33 - 54 | +14 | +18 | +2 |
55 - 76 | +13 | +19 | +3 |
77 - 100 | +12 | +20 | +4 |
101 - 124 | +11 | +21 | +5 |
125 - 149 | +10 | +22 | +6 |
150 - 176 | +9 | +23 | +7 |
177 - 204 | +8 | +24 | +8 |
205 - 236 | +7 | +25 | +9 |
237 - 272 | +6 | +26 | +10 |
273 - 313 | +5 | +27 | +11 |
314 - 363 | +4 | +28 | +12 |
364 - 427 | +3 | +29 | +13 |
428 - 521 | +2 | +30 | +14 |
522 - 724 | +1 | +31 | +15 |
725 - 2000 | +0 | +32 | +16 |