Grishina Olga
From Moscow, Russia
EMA: 15990379
Common russian riichi rating (CRR)
Rating date May 19, 2026 (latest changes May 19, 2026).
151 place (348.31).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (509.80 * 3.05 * 0.14 + 947.37 * 3.85 * 0.29 + 617.98 * 3.75 * 0.43 + 217.39 * 2.80 * 0.57 + 509.80 * 3.05 * 0.71 + 220 * 3.10 * 1) / (3.05 * 0.14 + 3.85 * 0.29 + 3.75 * 0.43 + 2.80 * 0.57 + 3.05 * 0.71 + 3.10 * 1) = 438.85018073506404
p2 = (509.80 * 3.05 * 0.71 + 947.37 * 3.85 * 0.29 + 617.98 * 3.75 * 0.43 + 220 * 3.10 * 1) / max_coefficients = 257.7750841750842
score = 438.85018073506404 * 0.5 + 257.7750841750842 * 0.5 = 348.3126324550741
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-19 | 154 -> 151 | 345.65 -> 348.31 |
"Green Dragon" in the Secret Chamber: 14% -> 0% |
| 2026-05-17 | 150 -> 154 | 345.65 | |
| 2026-05-15 | 151 -> 150 | 345.65 | |
| 2026-05-12 | 153 -> 151 | 347.79 -> 345.65 |
X Russian Championship: 14% -> 0% |
| 2026-05-11 | 151 -> 153 | 347.79 | |
| 2026-05-07 | 150 -> 151 | 347.79 | |
| 2026-05-05 | 151 -> 150 | 347.79 | |
| 2026-05-04 | 150 -> 151 | 347.79 | |
| 2026-05-03 | 149 -> 150 | 346.92 -> 347.79 | |
| 2026-05-02 | 150 -> 149 | 346.92 |
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 | 71% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 3 | 217 |
|
19/24 | 57% | 2.80 | CRR | Riichi never changing | Moscow | |
| 4 | 618 |
|
35/90 | 43% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 5 | 947 |
|
6/96 | 29% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 6 | 510 |
|
26/52 | 14% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 7 | 226 |
|
25/32 | 0% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 8 | 505 |
|
54/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 9 | 869 |
|
15/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 10 | 701 |
|
27/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 11 | 652 |
|
9/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 12 | 200 |
|
61/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 13 | 937 |
|
8/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 14 | 697 |
|
21/67 | 0% | 3.45 | RR | Tenpai can't buy happiness | Perm | |
| 15 | 106 |
|
43/48 | 0% | 3.10 | RR | Agari team tournament | Moscow | |
| 16 | 707 |
|
23/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg | |
| 17 | 323 |
|
22/32 | 0% | 2.70 | RR | The last chance: back to 2019 | Moscow | |
| 18 | 477 |
|
59/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 19 | 371 |
|
23/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 20 | 254 |
|
48/64 | 0% | 3.45 | EMA | White Dragon Tournament | Moscow |