Ermolaev Andrei
From Sarov, Russia
EMA: 15990413
Common russian riichi rating (CRR)
Rating date Sept. 5, 2025 (latest changes Sept. 5, 2025).
114 place (414.39).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (663.55 * 4.60 * 0.71 + 478.26 * 2.80 * 1 + 492.54 * 4.10 * 1 + 0 + 0) / (4.60 * 0.71 + 2.80 * 1 + 4.10 * 1 + 1 + 1) = 454.530608627433
p2 = (663.55 * 4.60 * 0.71 + 492.54 * 4.10 * 1 + 478.26 * 2.80 * 1) / max_coefficients = 374.24391891891895
score = 454.530608627433 * 0.5 + 374.24391891891895 * 0.5 = 414.38726377317596
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-09-03 | 116 -> 114 | 414.39 | |
2025-09-01 | 119 -> 116 | 409.46 -> 414.39 | |
2025-08-31 | 113 -> 119 | 409.46 | |
2025-08-22 | 114 -> 113 | 409.46 | |
2025-08-09 | 112 -> 114 | 409.46 | |
2025-08-04 | 112 | 407.68 -> 409.46 | |
2025-08-03 | 111 -> 112 | 407.68 | |
2025-07-26 | 110 -> 111 | 407.68 | |
2025-07-13 | 107 -> 110 | 407.68 | |
2025-07-12 | 101 -> 107 | 423.59 -> 407.68 |
X Russian Championship: 86% -> 71% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
---|---|---|---|---|---|---|---|---|---|
1 | 493 |
|
35/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
2 | 478 |
|
13/24 | 100% | 2.80 | CRR | Riichi never changing | Moscow | |
3 | 664 |
|
37/108 | 71% | 4.60 | RR | X Russian Championship | Perm | |
4 | 870 |
|
4/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
5 | 667 |
|
26/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
6 | 164 |
|
47/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
7 | 128 |
|
35/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
8 | 852 |
|
5/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
9 | 590 |
|
35/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
10 | 383 |
|
30/48 | 0% | 3.10 | RR | Agari team tournament 2019 | Moscow |