Ivshin Sergei

From Kirov, Russia

EMA: 15990412

Player page

Common russian riichi rating (CRR)

Rating date Jan. 8, 2026 (latest changes Jan. 7, 2026).

191 place (261.13).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (578.95 * 1.50 * 0.86 + 604.65 * 3 * 1 + 0 + 0 + 0) / (1.50 * 0.86 + 3 * 1 + 1 + 1 + 1) = 351.1381963174185

p2 = (604.65 * 3 * 1 + 578.95 * 1.50 * 0.86) / max_coefficients = 171.12173913043478

score = 351.1381963174185 * 0.5 + 171.12173913043478 * 0.5 = 261.1299677239266

Rating changes

Show

all results
Date Place Points Reason
2026-01-04 190 -> 191 268.54 -> 261.13

Dirty Riichi: 100% -> 86%
2026-01-03 189 -> 190 268.54
2025-12-27 185 -> 189 268.54
2025-12-13 187 -> 185 268.54
2025-12-07 182 -> 187 268.54
2025-12-06 178 -> 182 268.54
2025-12-04 180 -> 178 268.54
2025-11-30 182 -> 180 268.54
2025-11-25 183 -> 182 268.54
2025-11-22 180 -> 183 268.54

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 605 2025-08-03 18/44 100% 3.00 RR Two roosters and Chuckles Kirov
2 579 2025-01-04 9/20 86% 1.50 CRR Dirty Riichi Kirov
3 200 2022-07-03 13/16 0% 1.20 CRR Vyatka rooster Kirov
4 343 2022-03-20 45/68 0% 3.50 RR Tenpai can't buy happiness Perm
5 600 2021-11-06 23/56 0% 3.30 RR Kirov Tournament Kirov
6 667 2020-03-08 14/40 0% 2.90 EMA Big open chiitoitsu in a small tenpai Kirov
7 259 2019-09-08 21/28 0% 2.60 RR And yet the sinner collects tanyao Kirov
8 711 2019-05-04 25/84 0% 4.20 EMA Haru Shanten 2019 Perm
9 435 2019-03-09 14/24 0% 2.50 RR Toi-Toi-man Tournament Kirov
10 1000 2018-07-28 🥇 1/24 0% 1.40 RR Seven ryanmens Kirov