Kosolapov Nikita
From Kirov, Russia
EMA: 15990426
Common russian riichi rating (CRR)
Rating date Aug. 8, 2025 (latest changes Aug. 4, 2025).
119 place (389.64).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (607.48 * 4.60 * 0.71 + 37.97 * 3.65 * 0.86 + 473.68 * 1.50 * 1 + 641.79 * 4.10 * 1 + 162.79 * 3 * 1) / (4.60 * 0.71 + 3.65 * 0.86 + 1.50 * 1 + 4.10 * 1 + 3 * 1) = 395.9632867429789
p2 = (641.79 * 4.10 * 1 + 607.48 * 4.60 * 0.71 + 473.68 * 1.50 * 1 + 162.79 * 3 * 1) / max_coefficients = 383.3072368421052
score = 395.9632867429789 * 0.5 + 383.3072368421052 * 0.5 = 389.63526179254205
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-04 | 124 -> 119 | 381.75 -> 389.64 |
Riichi over Volga: 100% -> 86% |
| 2025-08-03 | 124 | 380.69 -> 381.75 |
Two roosters and Chuckles: 0% -> 100% |
| 2025-07-26 | 123 -> 124 | 380.69 | |
| 2025-07-19 | 124 -> 123 | 380.69 | |
| 2025-07-14 | 125 -> 124 | 380.69 | |
| 2025-07-13 | 121 -> 125 | 380.69 | |
| 2025-07-12 | 114 -> 121 | 394.80 -> 380.69 |
X Russian Championship: 86% -> 71% |
| 2025-07-05 | 113 -> 114 | 394.80 | |
| 2025-07-03 | 114 -> 113 | 394.80 | |
| 2025-06-25 | 115 -> 114 | 394.80 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 163 |
|
37/44 | 100% | 3.00 | RR | Two roosters and Chuckles | Kirov | |
| 2 | 642 |
|
25/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 3 | 474 |
|
11/20 | 100% | 1.50 | CRR | Dirty Riichi | Kirov | |
| 4 | 38 |
|
77/80 | 86% | 3.65 | RR | Riichi over Volga | Samara | |
| 5 | 607 |
|
43/108 | 71% | 4.60 | RR | X Russian Championship | Perm | |
| 6 | 483 |
|
46/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 7 | 467 |
|
9/16 | 0% | 1.20 | CRR | I still can declare riichi | Kirov | |
| 8 | 836 |
|
10/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
| 9 | 821 |
|
8/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
| 10 | 153 |
|
95/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 11 | 825 |
|
12/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm | |
| 12 | 148 |
|
24/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
| 13 | 200 |
|
29/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 14 | 410 |
|
50/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 15 | 783 |
|
6/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov | |
| 16 | 737 |
|
6/20 | 0% | 2.10 | RR | Fuyu Shanten 2019 | Perm |