Chichigina Natalya
From Odintsovo, Russia
EMA: 15990021
Common russian riichi rating (CRR)
Rating date Sept. 4, 2025 (latest changes Sept. 3, 2025).
107 place (426.27).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (627.45 * 3.05 * 0.57 + 627.45 * 3.05 * 0.71 + 400 * 3.85 * 0.86 + 549.02 * 3.05 * 1 + 0) / (3.05 * 0.57 + 3.05 * 0.71 + 3.85 * 0.86 + 3.05 * 1 + 1) = 483.96801765913546
p2 = (549.02 * 3.05 * 1 + 627.45 * 3.05 * 0.71 + 400 * 3.85 * 0.86 + 627.45 * 3.05 * 0.57) / max_coefficients = 368.575
score = 483.96801765913546 * 0.5 + 368.575 * 0.5 = 426.2715088295677
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 106 -> 107 | 440.76 -> 426.27 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 107 -> 106 | 440.42 -> 440.76 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 100 -> 107 | 440.42 | |
| 2025-08-09 | 97 -> 100 | 451.62 -> 440.42 |
Agari Summer Tournament 2024: 86% -> 71% |
| 2025-08-04 | 97 | 449.71 -> 451.62 | |
| 2025-08-03 | 96 -> 97 | 449.71 | |
| 2025-07-26 | 93 -> 96 | 449.71 | |
| 2025-07-13 | 90 -> 93 | 449.71 | |
| 2025-07-12 | 93 -> 90 | 446.08 -> 449.71 | |
| 2025-07-10 | 90 -> 93 | 456.88 -> 446.08 |
Agari Spring Tournament 2024: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 549 |
|
24/52 | 100% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 2 | 400 |
|
58/96 | 86% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 3 | 627 |
|
20/52 | 71% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 4 | 627 |
|
20/52 | 57% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 5 | 187 |
|
88/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 6 | 333 |
|
51/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 7 | 108 |
|
100/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 8 | 64 |
|
45/48 | 0% | 3.10 | RR | Agari team tournament | Moscow | |
| 9 | 32 |
|
31/32 | 0% | 2.70 | RR | The last chance: back to 2019 | Moscow | |
| 10 | 81 |
|
103/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 11 | 317 |
|
44/64 | 0% | 3.45 | EMA | White Dragon Tournament | Moscow | |
| 12 | 0 |
|
24/24 | 0% | 2.73 | RR | Winner tournament. Agari season event | Moscow | |
| 13 | 895 |
|
🥉 | 3/20 | 0% | 1.50 | CRR | Agari tournament. First stage | Moscow |