Ryabov Aleksandr
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date April 20, 2026 (latest changes April 19, 2026).
49 place (587.70).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (925.23 * 4.60 * 0.14 + 387.10 * 1.80 * 0.14 + 221.05 * 3.85 * 0.43 + 853.93 * 3.75 * 0.43 + 260.87 * 2.80 * 0.57 + 789.47 * 1.50 * 1 + 967.74 * 3 * 1 + 366.67 * 3 * 1 + 764.71 * 2.30 * 1 + 660 * 3.10 * 1) / (4.60 * 0.14 + 1.80 * 0.14 + 3.85 * 0.43 + 3.75 * 0.43 + 2.80 * 0.57 + 1.50 * 1 + 3 * 1 + 3 * 1 + 2.30 * 1 + 3.10 * 1) = 634.893508084902
p2 = (967.74 * 3 * 1 + 660 * 3.10 * 1 + 764.71 * 2.30 * 1 + 853.93 * 3.75 * 0.43) / max_coefficients = 540.5036789297658
score = 634.893508084902 * 0.5 + 540.5036789297658 * 0.5 = 587.698593507334
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-04-16 | 50 -> 49 | 587.70 | |
| 2026-04-13 | 44 -> 50 | 606.05 -> 587.70 |
Moscow Riichi 2024: 57% -> 43% |
| 2026-04-11 | 43 -> 44 | 606.05 | |
| 2026-04-05 | 53 -> 43 | 575.39 -> 606.05 |
Moscow Riichi 2026: 0% -> 100% |
| 2026-04-04 | 52 -> 53 | 575.39 | |
| 2026-04-01 | 54 -> 52 | 570.83 -> 575.39 |
Riichi never changing: 71% -> 57% |
| 2026-03-30 | 53 -> 54 | 570.83 | |
| 2026-03-21 | 52 -> 53 | 570.83 | |
| 2026-03-19 | 54 -> 52 | 568.98 -> 570.83 |
"Green Dragon" in the Secret Chamber: 29% -> 14% |
| 2026-03-14 | 74 -> 54 | 506.53 -> 568.98 |
"Furin" club tournament: for the anniversary: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 660 |
|
18/51 | 100% | 3.10 | RR | Moscow Riichi 2026 | Moscow | |
| 2 | 765 |
|
13/52 | 100% | 2.30 | CRR | "Furin" club tournament: for the anniversary | Moscow | |
| 3 | 367 |
|
20/31 | 100% | 3.00 | RR | Moscow Open Riichi Marathon 2026 | Moscow | |
| 4 | 968 |
|
🥈 | 2/32 | 100% | 3.00 | RR | Final Cup 2025 | Moscow |
| 5 | 789 |
|
5/20 | 100% | 1.50 | CRR | HaTiKo | Korolyov | |
| 6 | 161 |
|
27/32 | 71% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 7 | 261 |
|
18/24 | 57% | 2.80 | CRR | Riichi never changing | Moscow | |
| 8 | 854 |
|
14/90 | 43% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 9 | 221 |
|
75/96 | 43% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 10 | 387 |
|
20/32 | 14% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 11 | 925 |
|
9/108 | 14% | 4.60 | RR | X Russian Championship | Perm | |
| 12 | 353 |
|
34/52 | 0% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 13 | 897 |
|
5/40 | 0% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 14 | 364 |
|
15/23 | 0% | 2.10 | CRR | Mushroom League | Moscow | |
| 15 | 832 |
|
19/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 16 | 437 |
|
50/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 17 | 348 |
|
16/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 18 | 595 |
|
46/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |