Ermolaev Andrei

Winner Yoroshiku League 2

From Sarov, Russia

EMA: 15990413

Player page

Internal rating (RR)

Rating date Aug. 28, 2025 (latest changes Aug. 9, 2025).

121 place (340.33).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2

p1 = (663.55 * 4.60 * 0.71 + 492.54 * 4.10 * 1 + 0 + 0 + 0) / (4.60 * 0.71 + 4.10 * 1 + 1 + 1 + 1) = 404.36828047580445

p2 = (663.55 * 4.60 * 0.71 + 492.54 * 4.10 * 1) / max_coefficients = 276.2947368421053

score = 404.36828047580445 * 0.5 + 276.2947368421053 * 0.5 = 340.3315086589549

Rating changes

Show

all results
Date Place Points Reason
2025-08-09 122 -> 121 340.33
2025-08-04 123 -> 122 338.98 -> 340.33
2025-08-03 120 -> 123 338.98
2025-07-13 117 -> 120 338.98
2025-07-12 113 -> 117 358.06 -> 338.98

X Russian Championship: 86% -> 71%
2025-07-03 115 -> 113 358.06
2025-06-15 109 -> 115 319.42 -> 358.06

13 bloody tiles: 0% -> 100%
2024-11-03 111 -> 109 319.42
2024-10-13 104 -> 111 321.68 -> 319.42
2024-10-11 106 -> 104 321.68

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 493 2025-06-15 35/68 100% 4.10 RR 13 bloody tiles Perm
2 664 2024-05-12 37/108 71% 4.60 RR X Russian Championship Perm
3 667 2022-11-06 26/76 0% 4.20 RR IX Russian Riichi Championship Perm
4 164 2021-11-06 47/56 0% 3.30 RR Kirov Tournament Kirov
5 128 2020-03-08 35/40 0% 2.90 EMA Big open chiitoitsu in a small tenpai Kirov
6 852 2019-09-08 5/28 0% 2.60 RR And yet the sinner collects tanyao Kirov
7 590 2019-05-04 35/84 0% 4.20 EMA Haru Shanten 2019 Perm
8 383 2019-01-13 30/48 0% 3.10 RR Agari team tournament 2019 Moscow