Dergunov Aleksey
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date June 9, 2025 (latest changes June 9, 2025).
7 place (747.97).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (542.37 * 3.25 * 1 + 960.78 * 3.05 * 0.71 + 826.09 * 2.80 * 1 + 252.87 * 3.75 * 0.14 + 214.95 * 4 * 0.29 + 863.64 * 2.10 * 0.43 + 769.23 * 2.90 * 0.43 + 260.87 * 2.10 * 0.71 + 747.66 * 4.60 * 0.86 + 548.39 * 1.80 * 0.86 + 1000 * 1.50 * 0.86 + 744.68 * 2.80 * 1 + 797.47 * 3.65 * 1 + 673.68 * 3.85 * 1 + 573.03 * 3.75 * 1 + 985.71 * 3.50 * 1 + 733.33 * 2 * 1) / (3.25 * 1 + 3.05 * 0.71 + 2.80 * 1 + 3.75 * 0.14 + 4 * 0.29 + 2.10 * 0.43 + 2.90 * 0.43 + 2.10 * 0.71 + 4.60 * 0.86 + 1.80 * 0.86 + 1.50 * 0.86 + 2.80 * 1 + 3.65 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1 + 2 * 1) = 712.5255916457432
p2 = (985.71 * 3.50 * 1 + 747.66 * 4.60 * 0.86 + 797.47 * 3.65 * 1 + 673.68 * 3.85 * 1) / max_coefficients = 783.4190984330592
score = 712.5255916457432 * 0.5 + 783.4190984330592 * 0.5 = 747.9723450394013
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-06-08 | 11 -> 7 | 736.81 -> 747.97 |
Random not fault: 0% -> 100% |
| 2025-05-30 | 11 | 735.23 -> 736.81 |
Seihoku spring tournament 2024: 86% -> 71% |
| 2025-05-26 | 11 | 735.64 -> 735.23 |
Autumn Agari tournament: 57% -> 43% |
| 2025-05-25 | 11 | 736.45 -> 735.64 |
Duplicate riichi mahjong tournament 2024: 100% -> 86% |
| 2025-05-19 | 11 | 736.01 -> 736.45 |
"Green Dragon" in the Secret Chamber: 100% -> 86% |
| 2025-05-12 | 12 -> 11 | 735.73 -> 736.01 |
X Russian Championship: 100% -> 86% |
| 2025-05-10 | 12 | 737.11 -> 735.73 |
Agari Spring Tournament 2024: 86% -> 71% |
| 2025-05-03 | 17 -> 12 | 691.27 -> 737.11 |
SPB Riichi Open 2023: 43% -> 29% Riichi over The Volga 2025: 0% -> 100% |
| 2025-04-22 | 17 | 692.01 -> 691.27 |
Mushroom League: 57% -> 43% |
| 2025-04-11 | 17 | 689.40 -> 692.01 |
Money can not buy tenpai: 29% -> 14% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 733 |
|
5/16 | 100% | 2.00 | RR | Random not fault | Moscow |
| 2 | 986 |
|
2/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 3 | 542 |
|
28/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg |
| 4 | 412 |
|
31/52 | 100% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow |
| 5 | 381 |
|
27/43 | 100% | 2.60 | RR | Riichi On Ice | Samara |
| 6 | 826 |
|
5/24 | 100% | 2.80 | CRR | Riichi never changing | Moscow |
| 7 | 573 |
|
39/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow |
| 8 | 674 |
|
32/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 9 | 797 |
|
17/80 | 100% | 3.65 | RR | Riichi over Volga | Samara |
| 10 | 745 |
|
13/48 | 100% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |
| 11 | 176 |
|
43/52 | 86% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow |
| 12 | 1000 |
|
1/20 | 86% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow |
| 13 | 548 |
|
15/32 | 86% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov |
| 14 | 748 |
|
28/108 | 86% | 4.60 | RR | X Russian Championship | Perm |
| 15 | 261 |
|
35/47 | 71% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 16 | 961 |
|
3/52 | 71% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |
| 17 | 769 |
|
10/40 | 43% | 2.90 | CRR | Autumn Agari tournament | Moscow |
| 18 | 864 |
|
4/23 | 43% | 2.10 | CRR | Mushroom League | Moscow |
| 19 | 215 |
|
85/108 | 29% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |
| 20 | 253 |
|
66/88 | 14% | 3.75 | RR | Money can not buy tenpai | Perm |
| 21 | 486 |
|
58/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |
| 22 | 612 |
|
27/68 | 0% | 3.50 | RR | Tenpai can't buy happiness | Perm |
| 23 | 511 |
|
24/48 | 0% | 3.10 | RR | Agari team tournament | Moscow |