Kosolapov Nikita
From Kirov, Russia
EMA: 15990426
Common russian riichi rating (CRR)
Rating date Jan. 26, 2025 (latest changes Jan. 26, 2025).
127 place (318.23).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (482.76 * 3.75 * 0.43 + 607.48 * 4.60 * 1 + 37.97 * 3.65 * 1 + 473.68 * 1.50 * 1 + 0) / (3.75 * 0.43 + 4.60 * 1 + 3.65 * 1 + 1.50 * 1 + 1) = 357.6394424325801
p2 = (607.48 * 4.60 * 1 + 482.76 * 3.75 * 0.43 + 473.68 * 1.50 * 1 + 37.97 * 3.65 * 1) / max_coefficients = 278.8290220820189
score = 357.6394424325801 * 0.5 + 278.8290220820189 * 0.5 = 318.2342322572995
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2025-01-26 | 125 -> 127 | 318.23 | |
| 2025-01-07 | 123 -> 125 | 318.23 | |
| 2025-01-04 | 138 -> 123 | 273.40 -> 318.23 | 
                        
                             Dirty Riichi: 0% -> 100%  | 
                
| 2024-12-29 | 137 -> 138 | 273.40 | |
| 2024-12-26 | 138 -> 137 | 273.40 | |
| 2024-12-11 | 137 -> 138 | 285.23 -> 273.40 | 
                        
                             Money can not buy tenpai: 57% -> 43%  | 
                
| 2024-11-05 | 140 -> 137 | 285.23 | |
| 2024-10-13 | 132 -> 140 | 287.82 -> 285.23 | |
| 2024-10-11 | 131 -> 132 | 299.52 -> 287.82 | 
                        
                             Money can not buy tenpai: 71% -> 57%  | 
                
| 2024-09-15 | 129 -> 131 | 299.52 | 
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 474 | 
                     | 
                11/20 | 100% | 1.50 | CRR | Dirty Riichi | Kirov | |
| 2 | 38 | 
                     | 
                77/80 | 100% | 3.65 | RR | Riichi over Volga | Samara | |
| 3 | 607 | 
                     | 
                43/108 | 100% | 4.60 | RR | X Russian Championship | Perm | |
| 4 | 483 | 
                     | 
                46/88 | 43% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 5 | 467 | 
                     | 
                9/16 | 0% | 1.20 | CRR | I still can declare riichi | Kirov | |
| 6 | 836 | 
                     | 
                10/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
| 7 | 821 | 
                     | 
                8/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
| 8 | 153 | 
                     | 
                95/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 9 | 825 | 
                     | 
                12/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm | |
| 10 | 148 | 
                     | 
                24/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
| 11 | 200 | 
                     | 
                29/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 12 | 410 | 
                     | 
                50/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 13 | 783 | 
                     | 
                6/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov | |
| 14 | 737 | 
                     | 
                6/20 | 0% | 2.10 | RR | Fuyu Shanten 2019 | Perm |