Matrosova Natalia
From Yekaterinburg, Russia
EMA: 15020064
Internal rating (RR)
Rating date Oct. 11, 2024 (latest changes Oct. 11, 2024).
110 place (293.72).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (195.40 * 3.75 * 0.57 + 411.21 * 4 * 0.86 + 242.99 * 4.60 * 1 + 489.36 * 2.80 * 1 + 303.80 * 3.65 * 1 + 0 * 3.85 * 1) / (3.75 * 0.57 + 4 * 0.86 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 3.85 * 1) = 265.0237040908791
p2 = (411.21 * 4 * 0.86 + 489.36 * 2.80 * 1 + 242.99 * 4.60 * 1 + 303.80 * 3.65 * 1) / max_coefficients = 322.4182787666469
score = 265.0237040908791 * 0.5 + 322.4182787666469 * 0.5 = 293.720991428763
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2024-10-11 | 112 -> 110 | 292.83 -> 293.72 | 
                        
                             Money can not buy tenpai: 71% -> 57%  | 
                
| 2024-09-03 | 111 -> 112 | 296.37 -> 292.83 | 
                        
                             SPB Riichi Open 2023: 100% -> 86%  | 
                
| 2024-09-01 | 92 -> 111 | 333.89 -> 296.37 | 
                        
                             SPB Riichi Open 2024: 0% -> 100%  | 
                
| 2024-08-11 | 92 | 330.17 -> 333.89 | 
                        
                             Money can not buy tenpai: 86% -> 71%  | 
                
| 2024-08-04 | 91 -> 92 | 312.60 -> 330.17 | 
                        
                             Riichi over Volga: 0% -> 100%  | 
                
| 2024-07-14 | 101 -> 91 | 236.78 -> 312.60 | 
                        
                             Guardian of the Winds: 0% -> 100%  | 
                
| 2024-06-11 | 109 -> 101 | 235.28 -> 236.78 | 
                        
                             Money can not buy tenpai: 100% -> 86%  | 
                
| 2024-06-09 | 97 -> 109 | 235.28 | |
| 2024-05-12 | 90 -> 97 | 202.74 -> 235.28 | 
                        
                             X Russian Championship: 0% -> 100%  | 
                
| 2024-05-06 | 92 -> 90 | 200.65 -> 202.74 | 
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 0 | 
                     | 
                96/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 2 | 304 | 
                     | 
                56/80 | 100% | 3.65 | RR | Riichi over Volga | Samara | |
| 3 | 489 | 
                     | 
                25/48 | 100% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 4 | 243 | 
                     | 
                82/108 | 100% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 411 | 
                     | 
                64/108 | 86% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 6 | 195 | 
                     | 
                71/88 | 57% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 7 | 672 | 
                     | 
                23/68 | 0% | 3.50 | RR | Tenpai can't buy happiness | Perm | |
| 8 | 609 | 
                     | 
                10/24 | 0% | 2.20 | RR | URAL Mahjong Battle | Yekaterinburg | |
| 9 | 211 | 
                     | 
                57/72 | 0% | 3.85 | EMA | Haru Shanten 2018 | Perm | |
| 10 | 70 | 
                     | 
                67/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten | Perm | |
| 11 | 0 | 
                     | 
                24/24 | 0% | 2.20 | RR | Summer EMA rules tournament 2017 | Yekaterinburg |