Grishina Olga
From Moscow, Russia
EMA: 15990379
Internal rating (RR)
Rating date Sept. 9, 2026 (latest changes Sept. 7, 2026).
219 place (175.45).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (617.98 * 3.75 * 0.14 + 509.80 * 3.05 * 0.43 + 220 * 3.10 * 1 + 0 + 0) / (3.75 * 0.14 + 3.05 * 0.43 + 3.10 * 1 + 1 + 1) = 241.90761914158
p2 = (220 * 3.10 * 1 + 509.80 * 3.05 * 0.43 + 617.98 * 3.75 * 0.14) / max_coefficients = 108.99351070733289
score = 241.90761914158 * 0.5 + 108.99351070733289 * 0.5 = 175.45056492445644
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-06 | 213 -> 219 | 175.45 | |
| 2026-09-01 | 180 -> 213 | 240.88 -> 175.45 |
SPB Riichi Open 2024: 14% -> 0% |
| 2026-08-31 | 180 | 240.65 -> 240.88 | |
| 2026-08-15 | 182 -> 180 | 240.12 -> 240.65 | |
| 2026-08-13 | 173 -> 182 | 261.38 -> 240.12 |
Moscow Riichi 2024: 29% -> 14% |
| 2026-08-04 | 175 -> 173 | 261.38 | |
| 2026-08-03 | 176 -> 175 | 261.38 | |
| 2026-08-02 | 172 -> 176 | 272.87 -> 261.38 |
Agari Winter Tournament 2025: 57% -> 43% |
| 2026-07-26 | 173 -> 172 | 272.87 | |
| 2026-07-25 | 172 -> 173 | 272.87 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 220 |
|
40/51 | 100% | 3.10 | RR | Moscow Riichi 2026 | Moscow | |
| 2 | 510 |
|
26/52 | 43% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 3 | 618 |
|
35/90 | 14% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 947 |
|
6/96 | 0% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 5 | 510 |
|
26/52 | 0% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 6 | 505 |
|
54/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 7 | 869 |
|
15/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 8 | 701 |
|
27/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 9 | 200 |
|
61/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 10 | 937 |
|
8/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 11 | 697 |
|
21/67 | 0% | 3.45 | RR | Tenpai can't buy happiness | Perm | |
| 12 | 106 |
|
43/48 | 0% | 3.10 | RR | Agari team tournament | Moscow | |
| 13 | 707 |
|
23/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg | |
| 14 | 323 |
|
22/32 | 0% | 2.70 | RR | The last chance: back to 2019 | Moscow | |
| 15 | 477 |
|
59/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 16 | 371 |
|
23/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 17 | 254 |
|
48/64 | 0% | 3.45 | EMA | White Dragon Tournament | Moscow |