Chichigina Natalya
From Odintsovo, Russia
EMA: 15990021
Internal rating (RR)
Rating date Jan. 6, 2026 (latest changes Jan. 1, 2026).
110 place (363.78).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (627.45 * 3.05 * 0.29 + 627.45 * 3.05 * 0.43 + 400 * 3.85 * 0.57 + 549.02 * 3.05 * 1 + 0) / (3.05 * 0.29 + 3.05 * 0.43 + 3.85 * 0.57 + 3.05 * 1 + 1) = 465.25926009416855
p2 = (549.02 * 3.05 * 1 + 400 * 3.85 * 0.57 + 627.45 * 3.05 * 0.43 + 627.45 * 3.05 * 0.29) / max_coefficients = 262.3036789297659
score = 465.25926009416855 * 0.5 + 262.3036789297659 * 0.5 = 363.7814695119672
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-01 | 112 -> 110 | 369.14 -> 363.78 |
SPB Riichi Open 2024: 71% -> 57% |
| 2025-12-09 | 110 -> 112 | 382.13 -> 369.14 |
Agari Summer Tournament 2024: 57% -> 43% |
| 2025-12-07 | 109 -> 110 | 382.13 | |
| 2025-12-04 | 108 -> 109 | 382.13 | |
| 2025-11-30 | 107 -> 108 | 382.13 | |
| 2025-11-10 | 104 -> 107 | 394.78 -> 382.13 |
Agari Spring Tournament 2024: 43% -> 29% |
| 2025-11-04 | 100 -> 104 | 401.91 -> 394.78 | |
| 2025-11-01 | 101 -> 100 | 406.99 -> 401.91 |
SPB Riichi Open 2024: 86% -> 71% |
| 2025-10-13 | 101 | 401.79 -> 406.99 | |
| 2025-10-09 | 100 -> 101 | 414.16 -> 401.79 |
Agari Summer Tournament 2024: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 549 |
|
24/52 | 100% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 2 | 400 |
|
58/96 | 57% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 3 | 627 |
|
20/52 | 43% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 4 | 627 |
|
20/52 | 29% | 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 |