Kosolapov Nikita
From Kirov, Russia
EMA: 15990426
Internal rating (RR)
Rating date June 9, 2025 (latest changes June 9, 2025).
157 place (229.75).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (482.76 * 3.75 * 0.14 + 607.48 * 4.60 * 0.86 + 37.97 * 3.65 * 1 + 0 + 0) / (3.75 * 0.14 + 4.60 * 0.86 + 3.65 * 1 + 1 + 1) = 275.69436251145896
p2 = (607.48 * 4.60 * 0.86 + 482.76 * 3.75 * 0.14 + 37.97 * 3.65 * 1) / max_coefficients = 183.79796559654466
score = 275.69436251145896 * 0.5 + 183.79796559654466 * 0.5 = 229.7461640540018
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2025-05-30 | 158 -> 157 | 229.75 | |
| 2025-05-12 | 152 -> 158 | 248.64 -> 229.75 | 
                        
                             X Russian Championship: 100% -> 86%  | 
                
| 2025-05-03 | 151 -> 152 | 248.64 | |
| 2025-04-26 | 149 -> 151 | 248.64 | |
| 2025-04-11 | 141 -> 149 | 261.22 -> 248.64 | 
                        
                             Money can not buy tenpai: 29% -> 14%  | 
                
| 2025-03-03 | 142 -> 141 | 261.22 | |
| 2025-03-02 | 137 -> 142 | 261.22 | |
| 2025-02-16 | 129 -> 137 | 261.22 | |
| 2025-02-11 | 130 -> 129 | 273.40 -> 261.22 | 
                        
                             Money can not buy tenpai: 43% -> 29%  | 
                
| 2025-02-02 | 123 -> 130 | 273.40 | 
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 38 | 
                     | 
                77/80 | 100% | 3.65 | RR | Riichi over Volga | Samara | |
| 2 | 607 | 
                     | 
                43/108 | 86% | 4.60 | RR | X Russian Championship | Perm | |
| 3 | 483 | 
                     | 
                46/88 | 14% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 4 | 836 | 
                     | 
                10/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
| 5 | 821 | 
                     | 
                8/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov | |
| 6 | 153 | 
                     | 
                95/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 7 | 825 | 
                     | 
                12/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm | |
| 8 | 148 | 
                     | 
                24/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov | |
| 9 | 200 | 
                     | 
                29/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 10 | 410 | 
                     | 
                50/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 11 | 783 | 
                     | 
                6/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov | |
| 12 | 737 | 
                     | 
                6/20 | 0% | 2.10 | RR | Fuyu Shanten 2019 | Perm |