Chichigina Natalya
From Odintsovo, Russia
EMA: 15990021
Common russian riichi rating (CRR)
Rating date Jan. 26, 2025 (latest changes Jan. 26, 2025).
97 place (401.70).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (186.92 * 4 * 0.57 + 627.45 * 3.05 * 1 + 627.45 * 3.05 * 1 + 400 * 3.85 * 1 + 0) / (4 * 0.57 + 3.05 * 1 + 3.05 * 1 + 3.85 * 1 + 1) = 437.8093928495875
p2 = (627.45 * 3.05 * 1 + 627.45 * 3.05 * 1 + 400 * 3.85 * 1 + 186.92 * 4 * 0.57) / max_coefficients = 365.5943217665615
score = 437.8093928495875 * 0.5 + 365.5943217665615 * 0.5 = 401.7018573080745
Rating changes
| Date | Place | Points | Reason | 
|---|---|---|---|
| 2025-01-26 | 95 -> 97 | 401.70 | |
| 2025-01-07 | 92 -> 95 | 401.70 | |
| 2025-01-05 | 91 -> 92 | 401.70 | |
| 2025-01-03 | 93 -> 91 | 399.88 -> 401.70 | 
                        
                             SPB Riichi Open 2023: 71% -> 57%  | 
                
| 2024-12-27 | 94 -> 93 | 399.88 | |
| 2024-12-18 | 95 -> 94 | 399.88 | |
| 2024-12-11 | 96 -> 95 | 399.88 | |
| 2024-11-05 | 96 | 413.71 -> 399.88 | |
| 2024-11-04 | 95 -> 96 | 413.71 | |
| 2024-11-03 | 96 -> 95 | 411.60 -> 413.71 | 
                        
                             SPB Riichi Open 2023: 86% -> 71%  | 
                
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 400 | 
                     | 
                58/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 2 | 627 | 
                     | 
                20/52 | 100% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 3 | 627 | 
                     | 
                20/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 4 | 187 | 
                     | 
                88/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 5 | 333 | 
                     | 
                51/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 6 | 108 | 
                     | 
                100/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 7 | 64 | 
                     | 
                45/48 | 0% | 3.10 | RR | Agari team tournament | Moscow | |
| 8 | 32 | 
                     | 
                31/32 | 0% | 2.70 | RR | The last chance: back to 2019 | Moscow | |
| 9 | 81 | 
                     | 
                103/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 10 | 317 | 
                     | 
                44/64 | 0% | 3.45 | EMA | White Dragon Tournament | Moscow | |
| 11 | 0 | 
                     | 
                24/24 | 0% | 2.73 | RR | Winner tournament. Agari season event | Moscow | |
| 12 | 895 | 
                     | 
                🥉 | 3/20 | 0% | 1.50 | CRR | Agari tournament. First stage | Moscow |