Ermolaev Alexey
From Kirov, Russia
EMA: 15990340
Common russian riichi rating (CRR)
Rating date Feb. 16, 2025 (latest changes Feb. 16, 2025).
29 place (639.90).
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 * 0.29 + 66.67 * 1.20 * 0.57 + 616.82 * 4 * 0.57 + 897.20 * 4.60 * 1 + 747.37 * 3.85 * 1 + 608.70 * 2.80 * 1 + 1000 * 1.50 * 1 + 193.55 * 3.10 * 1) / (3.75 * 0.29 + 1.20 * 0.57 + 4 * 0.57 + 4.60 * 1 + 3.85 * 1 + 2.80 * 1 + 1.50 * 1 + 3.10 * 1) = 635.716549651115
p2 = (897.20 * 4.60 * 1 + 747.37 * 3.85 * 1 + 608.70 * 2.80 * 1 + 1000 * 1.50 * 1) / max_coefficients = 644.0895899053628
score = 635.716549651115 * 0.5 + 644.0895899053628 * 0.5 = 639.9030697782389
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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% |
| 2025-01-04 | 19 -> 17 | 658.37 -> 675.13 |
Dirty Riichi: 0% -> 100% |
| 2025-01-03 | 19 | 668.42 -> 658.37 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-26 | 19 | 665.26 -> 668.42 |
Riichi or die: 71% -> 57% |
| 2024-12-18 | 19 | 663.01 -> 665.26 |
Meeting in the billiard room: 14% -> 0% |
| 2024-12-11 | 20 -> 19 | 658.28 -> 663.01 |
Money can not buy tenpai: 57% -> 43% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 194 |
|
26/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon |
| 2 | 1000 |
|
1/20 | 100% | 1.50 | CRR | Dirty Riichi |
| 3 | 609 |
|
10/24 | 100% | 2.80 | CRR | Riichi never changing |
| 4 | 747 |
|
25/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 5 | 897 |
|
12/108 | 100% | 4.60 | RR | X Russian Championship |
| 6 | 617 |
|
42/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 |
| 7 | 67 |
|
15/16 | 57% | 1.20 | CRR | Riichi or die |
| 8 | 356 |
|
57/88 | 29% | 3.75 | RR | Money can not buy tenpai |
| 9 | 478 |
|
13/24 | 0% | 2.80 | CRR | Meeting in the billiard room |
| 10 | 507 |
|
38/76 | 0% | 4.20 | RR | IX Russian Riichi Championship |
| 11 | 333 |
|
11/16 | 0% | 1.20 | CRR | Vyatka rooster |
| 12 | 909 |
|
6/56 | 0% | 3.30 | RR | Kirov Tournament |
| 13 | 205 |
|
32/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai |
| 14 | 279 |
|
81/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship |
| 15 | 556 |
|
29/64 | 0% | 3.85 | EMA | Aki Shanten 2019 |
| 16 | 889 |
|
4/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao |
| 17 | 114 |
|
32/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 |
| 18 | 843 |
|
14/84 | 0% | 4.20 | EMA | Haru Shanten 2019 |
| 19 | 130 |
|
21/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament |
| 20 | 648 |
|
33/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |
| 21 | 304 |
|
17/24 | 0% | 1.40 | RR | Seven ryanmens |
| 22 | 155 |
|
61/72 | 0% | 3.85 | EMA | Haru Shanten 2018 |
| 23 | 733 |
|
5/16 | 0% | 1.20 | RR | Yakuman in discard |
| 24 | 28 |
|
70/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten |
| 25 | 667 |
|
6/16 | 0% | 1.20 | RR | Crouching Peacock, Hidden Dragon 2017 |
| 26 | 933 |
|
2/16 | 0% | 1.00 | RR | Third riichi mahjong tournament, Kirov 2017 |
| 27 | 545 |
|
6/12 | 0% | 0.90 | CRR | Second riichi mahjong tournament, Kirov 2017 |