Isabaev Rustam
From Chelyabinsk, Russia
Common russian riichi rating (CRR)
Rating date Oct. 13, 2025 (latest changes Oct. 13, 2025).
244 place (145.93).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835
p1 = (407.41 * 2.30 * 0.14 + 350.65 * 3.45 * 1 + 0 + 0 + 0) / (2.30 * 0.14 + 3.45 * 1 + 1 + 1 + 1) = 198.21587420541198
p2 = (350.65 * 3.45 * 1 + 407.41 * 2.30 * 0.14) / max_coefficients = 93.63452611127585
score = 198.21587420541198 * 0.5 + 93.63452611127585 * 0.5 = 145.9252001583439
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-13 | 244 | 144.50 -> 145.93 | |
| 2025-09-05 | 241 -> 244 | 153.86 -> 144.50 |
Finding Dora: 29% -> 14% |
| 2025-09-03 | 250 -> 241 | 153.86 | |
| 2025-09-01 | 252 -> 250 | 152.54 -> 153.86 | |
| 2025-08-31 | 282 -> 252 | 52.69 -> 152.54 |
SPB Riichi Open 2025: 0% -> 100% |
| 2025-08-25 | 283 -> 282 | 52.69 | |
| 2025-08-04 | 283 | 52.59 -> 52.69 | |
| 2025-08-03 | 278 -> 283 | 52.59 | |
| 2025-08-02 | 277 -> 278 | 52.59 | |
| 2025-07-30 | 278 -> 277 | 52.59 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 351 |
|
51/78 | 100% | 3.45 | RR | SPB Riichi Open 2025 | Saint Petersburg | |
| 2 | 407 |
|
17/28 | 14% | 2.30 | CRR | Finding Dora | Yekaterinburg | |
| 3 | 211 |
|
16/20 | 0% | 2.10 | CRR | 13 tiles until tempai | Yekaterinburg |