Ivshin Sergei

From Kirov, Russia

EMA: 15990412

Player page

Common russian riichi rating (CRR)

Rating date Sept. 21, 2026 (latest changes Sept. 17, 2026).

278 place (208.74).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (578.95 * 1.50 * 0.29 + 604.65 * 3 * 0.86 + 0 + 0 + 0) / (1.50 * 0.29 + 3 * 0.86 + 1 + 1 + 1) = 300.48251206280156

p2 = (604.65 * 3 * 0.86 + 578.95 * 1.50 * 0.29) / max_coefficients = 116.99221284879947

score = 300.48251206280156 * 0.5 + 116.99221284879947 * 0.5 = 208.7373624558005

Rating changes

Show

all results
Date Place Points Reason
2026-09-15 279 -> 278 208.74
2026-09-06 273 -> 279 208.74
2026-09-04 263 -> 273 217.57 -> 208.74

Dirty Riichi: 43% -> 29%
2026-09-01 267 -> 263 217.57
2026-08-31 266 -> 267 217.36 -> 217.57
2026-08-30 264 -> 266 217.36
2026-08-16 262 -> 264 217.36
2026-08-15 262 216.91 -> 217.36
2026-08-13 265 -> 262 216.91
2026-08-04 267 -> 265 216.91

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 605 2025-08-03 18/44 86% 3.00 RR Two roosters and Chuckles Kirov
2 579 2025-01-04 9/20 29% 1.50 CRR Dirty Riichi Kirov
3 200 2022-07-03 13/16 0% 1.20 CRR Vyatka rooster Kirov
4 333 2022-03-20 45/67 0% 3.45 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