Dergunov Aleksey
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Jan. 26, 2025 (latest changes Jan. 26, 2025).
13 place (716.17).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (252.87 * 3.75 * 0.43 + 863.64 * 2.10 * 0.71 + 769.23 * 2.90 * 0.71 + 960.78 * 3.05 * 1 + 260.87 * 2.10 * 1 + 747.66 * 4.60 * 1 + 548.39 * 1.80 * 1 + 1000 * 1.50 * 1 + 744.68 * 2.80 * 1 + 797.47 * 3.65 * 1 + 673.68 * 3.85 * 1 + 573.03 * 3.75 * 1 + 826.09 * 2.80 * 1 + 380.95 * 2.60 * 1) / (3.75 * 0.43 + 2.10 * 0.71 + 2.90 * 0.71 + 3.05 * 1 + 2.10 * 1 + 4.60 * 1 + 1.80 * 1 + 1.50 * 1 + 2.80 * 1 + 3.65 * 1 + 3.85 * 1 + 3.75 * 1 + 2.80 * 1 + 2.60 * 1) = 683.1933118800386
p2 = (747.66 * 4.60 * 1 + 960.78 * 3.05 * 1 + 797.47 * 3.65 * 1 + 673.68 * 3.85 * 1) / max_coefficients = 749.1533123028391
score = 683.1933118800386 * 0.5 + 749.1533123028391 * 0.5 = 716.1733120914389
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-26 | 11 -> 13 | 727.75 -> 716.17 |
Autumn Agari tournament: 86% -> 71% Riichi On Ice: 0% -> 100% |
| 2024-12-22 | 11 | 728.40 -> 727.75 |
Mushroom League: 86% -> 71% |
| 2024-12-18 | 12 -> 11 | 728.40 | |
| 2024-12-11 | 12 | 725.05 -> 728.40 |
Money can not buy tenpai: 57% -> 43% |
| 2024-12-01 | 14 -> 12 | 701.16 -> 725.05 |
Riichi never changing: 0% -> 100% |
| 2024-11-26 | 14 | 701.81 -> 701.16 |
Autumn Agari tournament: 100% -> 86% |
| 2024-11-03 | 15 -> 14 | 699.08 -> 701.81 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-22 | 15 | 699.94 -> 699.08 |
Mushroom League: 100% -> 86% |
| 2024-10-13 | 10 -> 15 | 712.04 -> 699.94 |
Moscow Riichi 2024: 0% -> 100% |
| 2024-10-11 | 10 | 708.85 -> 712.04 |
Money can not buy tenpai: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 381 |
|
27/43 | 100% | 2.60 | RR | Riichi On Ice |
| 2 | 826 |
|
5/24 | 100% | 2.80 | CRR | Riichi never changing |
| 3 | 573 |
|
39/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 4 | 674 |
|
32/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 5 | 797 |
|
17/80 | 100% | 3.65 | RR | Riichi over Volga |
| 6 | 745 |
|
13/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 7 | 176 |
|
43/52 | 100% | 3.05 | RR | Agari Summer Tournament 2024 |
| 8 | 1000 |
|
1/20 | 100% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 |
| 9 | 548 |
|
15/32 | 100% | 1.80 | CRR | "Green Dragon" in the Secret Chamber |
| 10 | 748 |
|
28/108 | 100% | 4.60 | RR | X Russian Championship |
| 11 | 261 |
|
35/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 12 | 961 |
|
3/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 |
| 13 | 769 |
|
10/40 | 71% | 2.90 | CRR | Autumn Agari tournament |
| 14 | 864 |
|
4/23 | 71% | 2.10 | CRR | Mushroom League |
| 15 | 215 |
|
85/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 |
| 16 | 253 |
|
66/88 | 43% | 3.75 | RR | Money can not buy tenpai |
| 17 | 486 |
|
58/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |
| 18 | 612 |
|
27/68 | 0% | 3.50 | RR | Tenpai can't buy happiness |
| 19 | 511 |
|
24/48 | 0% | 3.10 | RR | Agari team tournament |