Chichigina Natalya
From Odintsovo, Russia
EMA: 15990021
Internal rating (RR)
Rating date Nov. 1, 2025 (latest changes Nov. 1, 2025).
100 place (401.91).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.25 * 1) = 14.3
p1 = (627.45 * 3.05 * 0.43 + 627.45 * 3.05 * 0.57 + 400 * 3.85 * 0.71 + 549.02 * 3.05 * 1 + 0) / (3.05 * 0.43 + 3.05 * 0.57 + 3.85 * 0.71 + 3.05 * 1 + 1) = 475.96180935030304
p2 = (549.02 * 3.05 * 1 + 400 * 3.85 * 0.71 + 627.45 * 3.05 * 0.57 + 627.45 * 3.05 * 0.43) / max_coefficients = 327.84965034965035
score = 475.96180935030304 * 0.5 + 327.84965034965035 * 0.5 = 401.9057298499767
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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% |
| 2025-09-30 | 101 -> 100 | 414.16 | |
| 2025-09-12 | 102 -> 101 | 414.16 | |
| 2025-09-10 | 98 -> 102 | 426.27 -> 414.16 |
Agari Spring Tournament 2024: 57% -> 43% |
| 2025-09-03 | 98 | 440.76 -> 426.27 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 98 | 440.42 -> 440.76 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 91 -> 98 | 440.42 | |
| 2025-08-09 | 88 -> 91 | 451.62 -> 440.42 |
Agari Summer Tournament 2024: 86% -> 71% |
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 | 71% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 3 | 627 |
|
20/52 | 57% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 4 | 627 |
|
20/52 | 43% | 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 |