Kosolapov Nikita

From Kirov, Russia

EMA: 15990426

Player page

Common russian riichi rating (CRR)

Rating date Sept. 20, 2026 (latest changes Sept. 17, 2026).

252 place (238.89).

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

p1 = (473.68 * 1.50 * 0.29 + 641.79 * 4.10 * 0.71 + 162.79 * 3 * 0.86 + 0 + 0) / (1.50 * 0.29 + 4.10 * 0.71 + 3 * 0.86 + 1 + 1) = 315.46399814340197

p2 = (641.79 * 4.10 * 0.71 + 162.79 * 3 * 0.86 + 473.68 * 1.50 * 0.29) / max_coefficients = 162.3069435431538

score = 315.46399814340197 * 0.5 + 162.3069435431538 * 0.5 = 238.8854708432779

Rating changes

Show

all results
Date Place Points Reason
2026-09-15 253 -> 252 238.89
2026-09-06 246 -> 253 238.89
2026-09-04 246 244.26 -> 238.89

Dirty Riichi: 43% -> 29%
2026-09-01 249 -> 246 244.26
2026-08-31 249 243.99 -> 244.26
2026-08-30 246 -> 249 243.99
2026-08-16 242 -> 246 243.99
2026-08-15 227 -> 242 266.24 -> 243.99

13 bloody tiles: 86% -> 71%
2026-08-13 229 -> 227 266.24
2026-08-04 219 -> 229 277.97 -> 266.24

Riichi over Volga: 14% -> 0%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 163 2025-08-03 37/44 86% 3.00 RR Two roosters and Chuckles Kirov
2 642 2025-06-15 25/68 71% 4.10 RR 13 bloody tiles Perm
3 474 2025-01-04 11/20 29% 1.50 CRR Dirty Riichi Kirov
4 38 2024-08-04 77/80 0% 3.65 RR Riichi over Volga Samara
5 607 2024-05-12 43/108 0% 4.60 RR X Russian Championship Perm
6 483 2023-06-11 46/88 0% 3.75 RR Money can not buy tenpai Perm
7 467 2022-08-20 9/16 0% 1.20 CRR I still can declare riichi Kirov
8 836 2021-11-06 10/56 0% 3.30 RR Kirov Tournament Kirov
9 821 2020-03-08 8/40 0% 2.90 EMA Big open chiitoitsu in a small tenpai Kirov
10 153 2019-12-15 95/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
11 825 2019-11-04 12/64 0% 3.85 EMA Aki Shanten 2019 Perm
12 148 2019-09-08 24/28 0% 2.60 RR And yet the sinner collects tanyao Kirov
13 200 2019-07-21 29/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
14 410 2019-05-04 50/84 0% 4.20 EMA Haru Shanten 2019 Perm
15 783 2019-03-09 6/24 0% 2.50 RR Toi-Toi-man Tournament Kirov
16 737 2019-02-10 6/20 0% 2.10 RR Fuyu Shanten 2019 Perm