Ivshin Sergei

From Kirov, Russia

EMA: 15990412

Player page

Common russian riichi rating (CRR)

Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).

179 place (269.45).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (604.65 * 3 * 1 + 578.95 * 1.50 * 1 + 0 + 0 + 0) / (3 * 1 + 1.50 * 1 + 1 + 1 + 1) = 357.64933333333335

p2 = (604.65 * 3 * 1 + 578.95 * 1.50 * 1) / max_coefficients = 181.2412162162162

score = 357.64933333333335 * 0.5 + 181.2412162162162 * 0.5 = 269.44527477477476

Rating changes

Show

all results
Date Place Points Reason
2025-09-30 180 -> 179 269.45
2025-09-25 181 -> 180 269.45
2025-09-12 183 -> 181 269.45
2025-09-05 184 -> 183 269.45
2025-09-03 186 -> 184 269.45
2025-09-01 187 -> 186 267.06 -> 269.45
2025-08-31 183 -> 187 267.06
2025-08-26 185 -> 183 267.06
2025-08-25 186 -> 185 267.06
2025-08-04 186 266.20 -> 267.06

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 605 2025-08-03 18/44 100% 3.00 RR Two roosters and Chuckles Kirov
2 579 2025-01-04 9/20 100% 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