Ermolaev Alexey
From Kirov, Russia
EMA: 15990340
Common russian riichi rating (CRR)
Rating date May 6, 2025 (latest changes May 5, 2025).
13 place (735.90).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (356.32 * 3.75 * 0.14 + 66.67 * 1.20 * 0.29 + 616.82 * 4 * 0.29 + 897.20 * 4.60 * 1 + 747.37 * 3.85 * 1 + 608.70 * 2.80 * 1 + 1000 * 1.50 * 1 + 193.55 * 3.10 * 1 + 971.43 * 3.50 * 1) / (3.75 * 0.14 + 1.20 * 0.29 + 4 * 0.29 + 4.60 * 1 + 3.85 * 1 + 2.80 * 1 + 1.50 * 1 + 3.10 * 1 + 3.50 * 1) = 707.8356401031933
p2 = (897.20 * 4.60 * 1 + 971.43 * 3.50 * 1 + 747.37 * 3.85 * 1 + 608.70 * 2.80 * 1) / max_coefficients = 763.9634069400632
score = 707.8356401031933 * 0.5 + 763.9634069400632 * 0.5 = 735.8995235216282
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-05-03 | 26 -> 13 | 649.54 -> 735.90 |
SPB Riichi Open 2023: 43% -> 29% Riichi over The Volga 2025: 0% -> 100% |
| 2025-04-26 | 27 -> 26 | 646.83 -> 649.54 |
Riichi or die: 43% -> 29% |
| 2025-04-11 | 27 | 642.73 -> 646.83 |
Money can not buy tenpai: 29% -> 14% |
| 2025-03-03 | 29 -> 27 | 642.38 -> 642.73 |
SPB Riichi Open 2023: 57% -> 43% |
| 2025-02-26 | 29 | 639.90 -> 642.38 |
Riichi or die: 57% -> 43% |
| 2025-02-16 | 26 -> 29 | 639.90 | |
| 2025-02-11 | 27 -> 26 | 636.24 -> 639.90 |
Money can not buy tenpai: 43% -> 29% |
| 2025-02-02 | 26 -> 27 | 636.24 | |
| 2025-01-26 | 25 -> 26 | 636.24 | |
| 2025-01-07 | 17 -> 25 | 675.13 -> 636.24 |
Moscow Open Riichi Marathon: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 971 |
|
3/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 2 | 194 |
|
26/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow |
| 3 | 1000 |
|
1/20 | 100% | 1.50 | CRR | Dirty Riichi | Kirov |
| 4 | 609 |
|
10/24 | 100% | 2.80 | CRR | Riichi never changing | Moscow |
| 5 | 747 |
|
25/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 6 | 897 |
|
12/108 | 100% | 4.60 | RR | X Russian Championship | Perm |
| 7 | 617 |
|
42/108 | 29% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |
| 8 | 67 |
|
15/16 | 29% | 1.20 | CRR | Riichi or die | Kirov |
| 9 | 356 |
|
57/88 | 14% | 3.75 | RR | Money can not buy tenpai | Perm |
| 10 | 478 |
|
13/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow |
| 11 | 507 |
|
38/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm |
| 12 | 333 |
|
11/16 | 0% | 1.20 | CRR | Vyatka rooster | Kirov |
| 13 | 909 |
|
6/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov |
| 14 | 205 |
|
32/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov |
| 15 | 279 |
|
81/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow |
| 16 | 556 |
|
29/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm |
| 17 | 889 |
|
4/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov |
| 18 | 114 |
|
32/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow |
| 19 | 843 |
|
14/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm |
| 20 | 130 |
|
21/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov |
| 21 | 648 |
|
33/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm |
| 22 | 304 |
|
17/24 | 0% | 1.40 | RR | Seven ryanmens | Kirov |
| 23 | 155 |
|
61/72 | 0% | 3.85 | EMA | Haru Shanten 2018 | Perm |
| 24 | 733 |
|
5/16 | 0% | 1.20 | RR | Yakuman in discard | Kirov |
| 25 | 28 |
|
70/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten | Perm |
| 26 | 667 |
|
6/16 | 0% | 1.20 | RR | Crouching Peacock, Hidden Dragon 2017 | Kirov |
| 27 | 933 |
|
2/16 | 0% | 1.00 | RR | Third riichi mahjong tournament, Kirov 2017 | Kirov |
| 28 | 545 |
|
6/12 | 0% | 0.90 | CRR | Second riichi mahjong tournament, Kirov 2017 | Kirov |