Kosolapov Nikita

From Kirov, Russia

EMA: 15990426

Player page

Common russian riichi rating (CRR)

Rating date Feb. 9, 2026 (latest changes Feb. 9, 2026).

139 place (354.99).

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

p1 = (607.48 * 4.60 * 0.29 + 37.97 * 3.65 * 0.43 + 473.68 * 1.50 * 0.86 + 641.79 * 4.10 * 1 + 162.79 * 3 * 1) / (4.60 * 0.29 + 3.65 * 0.43 + 1.50 * 0.86 + 4.10 * 1 + 3 * 1) = 407.1701114853528

p2 = (641.79 * 4.10 * 1 + 607.48 * 4.60 * 0.29 + 473.68 * 1.50 * 0.86 + 162.79 * 3 * 1) / max_coefficients = 302.8133779264214

score = 407.1701114853528 * 0.5 + 302.8133779264214 * 0.5 = 354.9917447058871

Rating changes

Show

all results
Date Place Points Reason
2026-02-09 144 -> 139 354.99
2026-02-08 142 -> 144 354.99
2026-02-04 145 -> 142 346.83 -> 354.99

Riichi over Volga: 57% -> 43%
2026-02-02 146 -> 145 346.83
2026-01-25 145 -> 146 346.83
2026-01-19 146 -> 145 346.83
2026-01-12 136 -> 146 365.91 -> 346.83

X Russian Championship: 43% -> 29%
2026-01-07 132 -> 136 365.91
2026-01-04 130 -> 132 369.91 -> 365.91

Dirty Riichi: 100% -> 86%
2026-01-03 128 -> 130 369.91

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
3 474 2025-01-04 11/20 86% 1.50 CRR Dirty Riichi Kirov
4 38 2024-08-04 77/80 43% 3.65 RR Riichi over Volga Samara
5 607 2024-05-12 43/108 29% 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