Chichigina Natalya
From Odintsovo, Russia
EMA: 15990021
Internal rating (RR)
Rating date Aug. 9, 2025 (latest changes Aug. 9, 2025).
91 place (440.42).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (186.92 * 4 * 0.14 + 627.45 * 3.05 * 0.57 + 627.45 * 3.05 * 0.71 + 400 * 3.85 * 1 + 549.02 * 3.05 * 1) / (4 * 0.14 + 3.05 * 0.57 + 3.05 * 0.71 + 3.85 * 1 + 3.05 * 1) = 507.4894770773419
p2 = (549.02 * 3.05 * 1 + 400 * 3.85 * 1 + 627.45 * 3.05 * 0.71 + 627.45 * 3.05 * 0.57) / max_coefficients = 373.3539473684211
score = 507.4894770773419 * 0.5 + 373.3539473684211 * 0.5 = 440.4217122228815
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-09 | 88 -> 91 | 451.62 -> 440.42 |
Agari Summer Tournament 2024: 86% -> 71% |
| 2025-08-04 | 88 | 449.71 -> 451.62 | |
| 2025-08-03 | 87 -> 88 | 449.71 | |
| 2025-07-30 | 88 -> 87 | 449.71 | |
| 2025-07-13 | 87 -> 88 | 449.71 | |
| 2025-07-12 | 88 -> 87 | 446.08 -> 449.71 | |
| 2025-07-10 | 87 -> 88 | 456.88 -> 446.08 |
Agari Spring Tournament 2024: 71% -> 57% |
| 2025-07-03 | 87 | 449.55 -> 456.88 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-15 | 82 -> 87 | 455.44 -> 449.55 | |
| 2025-06-11 | 83 -> 82 | 455.44 |
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 | 100% | 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 | 14% | 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 |