Ryabov Aleksandr
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date July 15, 2026 (latest changes July 15, 2026).
25 place (691.40).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (221.05 * 3.85 * 0.14 + 853.93 * 3.75 * 0.29 + 260.87 * 2.80 * 0.43 + 161.29 * 3.10 * 0.43 + 789.47 * 1.50 * 0.86 + 967.74 * 3 * 1 + 764.71 * 2.30 * 1 + 660 * 3.10 * 1 + 811.19 * 4.71 * 1) / (3.85 * 0.14 + 3.75 * 0.29 + 2.80 * 0.43 + 3.10 * 0.43 + 1.50 * 0.86 + 3 * 1 + 2.30 * 1 + 3.10 * 1 + 4.71 * 1) = 706.764233446368
p2 = (811.19 * 4.71 * 1 + 967.74 * 3 * 1 + 660 * 3.10 * 1 + 764.71 * 2.30 * 1) / max_coefficients = 676.0418412352296
score = 706.764233446368 * 0.5 + 676.0418412352296 * 0.5 = 691.4030373407988
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-07-12 | 24 -> 25 | 691.40 | |
| 2026-07-07 | 25 -> 24 | 685.04 -> 691.40 |
Moscow Open Riichi Marathon: 57% -> 43% |
| 2026-07-03 | 26 -> 25 | 685.04 | |
| 2026-07-01 | 27 -> 26 | 678.39 -> 685.04 |
SPB Riichi Open 2024: 29% -> 14% |
| 2026-06-15 | 27 | 666.13 -> 678.39 | |
| 2026-06-14 | 58 -> 27 | 559.61 -> 666.13 |
XII Russian Championship: 0% -> 100% |
| 2026-06-13 | 53 -> 58 | 572.59 -> 559.61 |
Moscow Riichi 2024: 43% -> 29% |
| 2026-06-02 | 54 -> 53 | 572.59 | |
| 2026-06-01 | 56 -> 54 | 568.96 -> 572.59 |
Riichi never changing: 57% -> 43% |
| 2026-05-19 | 51 -> 56 | 589.63 -> 568.96 |
"Green Dragon" in the Secret Chamber: 14% -> 0% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 811 |
|
28/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 2 | 660 |
|
18/51 | 100% | 3.10 | RR | Moscow Riichi 2026 | Moscow | |
| 3 | 765 |
|
13/52 | 100% | 2.30 | CRR | "Furin" club tournament: for the anniversary | Moscow | |
| 4 | 367 |
|
20/31 | 100% | 3.00 | RR | Moscow Open Riichi Marathon 2026 | Moscow | |
| 5 | 968 |
|
🥈 | 2/32 | 100% | 3.00 | RR | Final Cup 2025 | Moscow |
| 6 | 789 |
|
5/20 | 86% | 1.50 | CRR | HaTiKo | Korolyov | |
| 7 | 161 |
|
27/32 | 43% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 8 | 261 |
|
18/24 | 43% | 2.80 | CRR | Riichi never changing | Moscow | |
| 9 | 854 |
|
14/90 | 29% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 10 | 221 |
|
75/96 | 14% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 11 | 387 |
|
20/32 | 0% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 12 | 925 |
|
9/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 13 | 353 |
|
34/52 | 0% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 14 | 897 |
|
5/40 | 0% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 15 | 364 |
|
15/23 | 0% | 2.10 | CRR | Mushroom League | Moscow | |
| 16 | 832 |
|
19/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 17 | 437 |
|
50/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 18 | 348 |
|
16/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 19 | 595 |
|
46/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |