Kosolapov Nikita

From Kirov, Russia

EMA: 15990426

Player page

Internal rating (RR)

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

126 place (327.87).

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

p1 = (607.48 * 4.60 * 0.43 + 37.97 * 3.65 * 0.57 + 641.79 * 4.10 * 1 + 162.79 * 3 * 1 + 0) / (4.60 * 0.43 + 3.65 * 0.57 + 4.10 * 1 + 3 * 1 + 1) = 361.6458435639216

p2 = (641.79 * 4.10 * 1 + 607.48 * 4.60 * 0.43 + 162.79 * 3 * 1 + 37.97 * 3.65 * 0.57) / max_coefficients = 294.0862876254181

score = 361.6458435639216 * 0.5 + 294.0862876254181 * 0.5 = 327.86606559466986

Rating changes

Show

all results
Date Place Points Reason
2025-12-07 124 -> 126 327.87
2025-12-04 128 -> 124 321.87 -> 327.87

Riichi over Volga: 71% -> 57%
2025-11-30 127 -> 128 321.87
2025-11-14 128 -> 127 321.87
2025-11-12 121 -> 128 341.60 -> 321.87

X Russian Championship: 57% -> 43%
2025-11-04 117 -> 121 348.92 -> 341.60
2025-11-01 117 348.34 -> 348.92
2025-10-13 118 -> 117 343.23 -> 348.34
2025-10-04 122 -> 118 337.82 -> 343.23

Riichi over Volga: 86% -> 71%
2025-09-12 118 -> 122 357.17 -> 337.82

X Russian Championship: 71% -> 57%

Tournaments

# Base rank Date Place Power Coefficient Rating 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 38 2024-08-04 77/80 57% 3.65 RR Riichi over Volga Samara
4 607 2024-05-12 43/108 43% 4.60 RR X Russian Championship Perm
5 483 2023-06-11 46/88 0% 3.75 RR Money can not buy tenpai Perm
6 836 2021-11-06 10/56 0% 3.30 RR Kirov Tournament Kirov
7 821 2020-03-08 8/40 0% 2.90 EMA Big open chiitoitsu in a small tenpai Kirov
8 153 2019-12-15 95/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
9 825 2019-11-04 12/64 0% 3.85 EMA Aki Shanten 2019 Perm
10 148 2019-09-08 24/28 0% 2.60 RR And yet the sinner collects tanyao Kirov
11 200 2019-07-21 29/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
12 410 2019-05-04 50/84 0% 4.20 EMA Haru Shanten 2019 Perm
13 783 2019-03-09 6/24 0% 2.50 RR Toi-Toi-man Tournament Kirov
14 737 2019-02-10 6/20 0% 2.10 RR Fuyu Shanten 2019 Perm