Grashhenko Artem
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Oct. 4, 2025 (latest changes Oct. 4, 2025).
241 place (152.15).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (454.55 * 2.10 * 0.14 + 565.22 * 2.10 * 0.43 + 254.90 * 3.05 * 0.71 + 0 + 0) / (2.10 * 0.14 + 2.10 * 0.43 + 3.05 * 0.71 + 1 + 1) = 223.1850619984327
p2 = (254.90 * 3.05 * 0.71 + 565.22 * 2.10 * 0.43 + 454.55 * 2.10 * 0.14) / max_coefficients = 81.11216216216216
score = 223.1850619984327 * 0.5 + 81.11216216216216 * 0.5 = 152.14861208029743
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-30 | 235 -> 241 | 166.91 -> 152.15 |
Seihoku spring tournament 2024: 57% -> 43% |
| 2025-09-19 | 236 -> 235 | 166.91 | |
| 2025-09-15 | 238 -> 236 | 166.91 | |
| 2025-09-03 | 246 -> 238 | 166.91 | |
| 2025-09-01 | 246 | 165.69 -> 166.91 | |
| 2025-08-31 | 241 -> 246 | 165.69 | |
| 2025-08-25 | 243 -> 241 | 165.69 | |
| 2025-08-22 | 236 -> 243 | 175.52 -> 165.69 |
Mushroom League: 29% -> 14% |
| 2025-08-09 | 236 | 179.27 -> 175.52 |
Agari Summer Tournament 2024: 86% -> 71% |
| 2025-08-04 | 236 | 178.75 -> 179.27 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 255 |
|
39/52 | 71% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 2 | 565 |
|
21/47 | 43% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 3 | 455 |
|
13/23 | 14% | 2.10 | CRR | Mushroom League | Moscow |