Kosolapov Nikita

From Kirov, Russia

EMA: 15990426

Player page

Common russian riichi rating (CRR)

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

122 place (383.04).

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

p1 = (641.79 * 4.10 * 1 + 37.97 * 3.65 * 0.71 + 162.79 * 3 * 1 + 607.48 * 4.60 * 0.57 + 473.68 * 1.50 * 1) / (4.10 * 1 + 3.65 * 0.71 + 3 * 1 + 4.60 * 0.57 + 1.50 * 1) = 399.4012562488098

p2 = (641.79 * 4.10 * 1 + 607.48 * 4.60 * 0.57 + 473.68 * 1.50 * 1 + 162.79 * 3 * 1) / max_coefficients = 366.68648648648644

score = 399.4012562488098 * 0.5 + 366.68648648648644 * 0.5 = 383.0438713676481

Rating changes

Show

all results
Date Place Points Reason
2025-10-04 124 -> 122 376.48 -> 383.04

Riichi over Volga: 86% -> 71%
2025-09-26 125 -> 124 376.48
2025-09-19 126 -> 125 376.48
2025-09-14 127 -> 126 376.48
2025-09-12 119 -> 127 394.82 -> 376.48

X Russian Championship: 71% -> 57%
2025-09-10 121 -> 119 394.82
2025-09-03 122 -> 121 394.82
2025-09-01 124 -> 122 389.64 -> 394.82
2025-08-31 118 -> 124 389.64
2025-08-25 119 -> 118 389.64

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 163 2025-08-03 37/44 100% 3.00 RR Two roosters and Chuckles Kirov
2 642 2025-06-15 25/68 100% 4.10 RR 13 bloody tiles Perm
3 474 2025-01-04 11/20 100% 1.50 CRR Dirty Riichi Kirov
4 38 2024-08-04 77/80 71% 3.65 RR Riichi over Volga Samara
5 607 2024-05-12 43/108 57% 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