Ryabov Aleksandr
From Moscow, Russia
Internal rating (RR)
Rating date April 12, 2024 (latest changes April 12, 2024).
28 place (499.81).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 3.05 * 1 + 4.20 * 0.57) = 13.19988
p1 = (594.59 * 4.05 * 0.14 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 352.94 * 3.05 * 1 + 0) / (4.05 * 0.14 + 3.75 * 1 + 4 * 1 + 3.05 * 1 + 1) = 515.8535861268651
p2 = (831.78 * 4 * 1 + 436.78 * 3.75 * 1 + 352.94 * 3.05 * 1 + 594.59 * 4.05 * 0.14) / max_coefficients = 483.7634887589887
score = 515.8535861268651 * 0.5 + 483.7634887589887 * 0.5 = 499.8085374429269
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-04-12 | 23 -> 28 | 514.59 -> 499.81 |
Moscow Riichi 2022: 29% -> 14% |
| 2024-03-30 | 19 -> 23 | 514.59 | |
| 2024-03-20 | 23 -> 19 | 514.59 | |
| 2024-03-10 | 22 -> 23 | 509.12 -> 514.59 |
Agari Spring Tournament 2024: 0% -> 100% |
| 2024-03-06 | 26 -> 22 | 496.52 -> 509.12 | |
| 2024-02-12 | 25 -> 26 | 501.22 -> 496.52 |
Moscow Riichi 2022: 43% -> 29% |
| 2024-01-20 | 24 -> 25 | 501.22 | |
| 2024-01-06 | 27 -> 24 | 490.22 -> 501.22 | |
| 2023-12-19 | 28 -> 27 | 490.22 | |
| 2023-12-12 | 26 -> 28 | 494.84 -> 490.22 |
Moscow Riichi 2022: 57% -> 43% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 353 |
|
34/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 |
| 2 | 832 |
|
19/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 3 | 437 |
|
50/88 | 100% | 3.75 | RR | Money can not buy tenpai |
| 4 | 595 |
|
46/112 | 14% | 4.05 | RR | Moscow Riichi 2022 |