Ryabov Aleksandr
From Moscow, Russia
Internal rating (RR)
Rating date Sept. 1, 2024 (latest changes Sept. 1, 2024).
29 place (599.04).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.85 * 1 + 3.65 * 1) = 16.099999999999998
p1 = (436.78 * 3.75 * 0.71 + 831.78 * 4 * 1 + 925.23 * 4.60 * 1 + 352.94 * 3.05 * 1 + 221.05 * 3.85 * 1) / (3.75 * 0.71 + 4 * 1 + 4.60 * 1 + 3.05 * 1 + 3.85 * 1) = 587.5394866223379
p2 = (925.23 * 4.60 * 1 + 831.78 * 4 * 1 + 436.78 * 3.75 * 0.71 + 352.94 * 3.05 * 1) / max_coefficients = 610.5347826086957
score = 587.5394866223379 * 0.5 + 610.5347826086957 * 0.5 = 599.0371346155168
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-09-01 | 19 -> 29 | 641.86 -> 599.04 |
SPB Riichi Open 2024: 0% -> 100% |
| 2024-08-11 | 19 | 642.56 -> 641.86 |
Money can not buy tenpai: 86% -> 71% |
| 2024-08-04 | 13 -> 19 | 655.69 -> 642.56 | |
| 2024-07-14 | 11 -> 13 | 655.69 | |
| 2024-06-11 | 12 -> 11 | 667.33 -> 655.69 |
Money can not buy tenpai: 100% -> 86% |
| 2024-06-09 | 9 -> 12 | 667.33 | |
| 2024-05-12 | 25 -> 9 | 505.43 -> 667.33 |
X Russian Championship: 0% -> 100% |
| 2024-05-06 | 28 -> 25 | 499.81 -> 505.43 | |
| 2024-04-12 | 23 -> 28 | 514.59 -> 499.81 |
Moscow Riichi 2022: 29% -> 14% |
| 2024-03-30 | 19 -> 23 | 514.59 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 221 |
|
75/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 2 | 925 |
|
9/108 | 100% | 4.60 | RR | X Russian Championship |
| 3 | 353 |
|
34/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 |
| 4 | 832 |
|
19/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 5 | 437 |
|
50/88 | 71% | 3.75 | RR | Money can not buy tenpai |
| 6 | 595 |
|
46/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |