Ryabov Aleksandr
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date July 12, 2025 (latest changes July 12, 2025).
54 place (568.23).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35
p1 = (831.78 * 4 * 0.14 + 363.64 * 2.10 * 0.29 + 897.44 * 2.90 * 0.43 + 352.94 * 3.05 * 0.57 + 925.23 * 4.60 * 0.71 + 387.10 * 1.80 * 0.86 + 853.93 * 3.75 * 1 + 260.87 * 2.80 * 1 + 161.29 * 3.10 * 1 + 789.47 * 1.50 * 1) / (4 * 0.14 + 2.10 * 0.29 + 2.90 * 0.43 + 3.05 * 0.57 + 4.60 * 0.71 + 1.80 * 0.86 + 3.75 * 1 + 2.80 * 1 + 3.10 * 1 + 1.50 * 1) = 579.9797773522237
p2 = (853.93 * 3.75 * 1 + 925.23 * 4.60 * 0.71 + 789.47 * 1.50 * 1 + 897.44 * 2.90 * 0.43) / max_coefficients = 556.484039087948
score = 579.9797773522237 * 0.5 + 556.484039087948 * 0.5 = 568.2319082200859
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-12 | 46 -> 54 | 587.91 -> 568.23 |
X Russian Championship: 86% -> 71% |
| 2025-07-10 | 49 -> 46 | 585.46 -> 587.91 |
Agari Spring Tournament 2024: 71% -> 57% |
| 2025-07-05 | 50 -> 49 | 585.46 | |
| 2025-07-03 | 46 -> 50 | 588.68 -> 585.46 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-22 | 46 | 587.13 -> 588.68 |
Mushroom League: 43% -> 29% |
| 2025-06-15 | 43 -> 46 | 595.79 -> 587.13 | |
| 2025-06-14 | 44 -> 43 | 595.79 | |
| 2025-06-11 | 46 -> 44 | 593.99 -> 595.79 |
Money can not buy tenpai: 14% -> 0% |
| 2025-05-26 | 43 -> 46 | 609.02 -> 593.99 |
Autumn Agari tournament: 57% -> 43% |
| 2025-05-19 | 43 | 607.89 -> 609.02 |
"Green Dragon" in the Secret Chamber: 100% -> 86% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 789 |
|
5/20 | 100% | 1.50 | CRR | HaTiKo | Korolyov |
| 2 | 161 |
|
27/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow |
| 3 | 261 |
|
18/24 | 100% | 2.80 | CRR | Riichi never changing | Moscow |
| 4 | 854 |
|
14/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow |
| 5 | 221 |
|
75/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 6 | 387 |
|
20/32 | 86% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov |
| 7 | 925 |
|
9/108 | 71% | 4.60 | RR | X Russian Championship | Perm |
| 8 | 353 |
|
34/52 | 57% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |
| 9 | 897 |
|
5/40 | 43% | 2.90 | CRR | Autumn Agari tournament | Moscow |
| 10 | 364 |
|
15/23 | 29% | 2.10 | CRR | Mushroom League | Moscow |
| 11 | 832 |
|
19/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |
| 12 | 437 |
|
50/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |
| 13 | 348 |
|
16/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow |
| 14 | 595 |
|
46/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |