Sirotkin Dmitry
From Moscow, Russia
EMA: 15990155
Common russian riichi rating (CRR)
Rating date Dec. 6, 2025 (latest changes Dec. 4, 2025).
12 place (729.04).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (235.29 * 3.05 * 0.29 + 456.52 * 2.10 * 0.29 + 252.34 * 4.60 * 0.43 + 803.92 * 3.05 * 0.57 + 822.78 * 3.65 * 0.57 + 431.58 * 3.85 * 0.71 + 449.44 * 3.75 * 0.86 + 903.23 * 3.10 * 1 + 738.10 * 2.60 * 1 + 490.20 * 3.05 * 1 + 305.08 * 3.25 * 1 + 714.29 * 3.50 * 1 + 761.19 * 4.10 * 1 + 976.74 * 3 * 1 + 922.08 * 3.45 * 1) / (3.05 * 0.29 + 2.10 * 0.29 + 4.60 * 0.43 + 3.05 * 0.57 + 3.65 * 0.57 + 3.85 * 0.71 + 3.75 * 0.86 + 3.10 * 1 + 2.60 * 1 + 3.05 * 1 + 3.25 * 1 + 3.50 * 1 + 4.10 * 1 + 3 * 1 + 3.45 * 1) = 653.2411788326347
p2 = (922.08 * 3.45 * 1 + 761.19 * 4.10 * 1 + 976.74 * 3 * 1 + 903.23 * 3.10 * 1) / max_coefficients = 804.8361204013378
score = 653.2411788326347 * 0.5 + 804.8361204013378 * 0.5 = 729.0386496169863
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-04 | 12 | 730.15 -> 729.04 |
Riichi over Volga: 71% -> 57% |
| 2025-11-30 | 13 -> 12 | 729.41 -> 730.15 |
Seihoku spring tournament 2024: 43% -> 29% |
| 2025-11-25 | 12 -> 13 | 729.41 | |
| 2025-11-22 | 11 -> 12 | 729.41 | |
| 2025-11-12 | 12 -> 11 | 726.17 -> 729.41 |
X Russian Championship: 57% -> 43% |
| 2025-11-10 | 12 | 723.99 -> 726.17 |
Agari Spring Tournament 2024: 43% -> 29% |
| 2025-11-04 | 11 -> 12 | 742.28 -> 723.99 | |
| 2025-11-01 | 12 -> 11 | 739.43 -> 742.28 |
SPB Riichi Open 2024: 86% -> 71% |
| 2025-10-13 | 13 -> 12 | 725.46 -> 739.43 |
Moscow Riichi 2024: 100% -> 86% |
| 2025-10-09 | 13 | 726.31 -> 725.46 |
Agari Summer Tournament 2024: 71% -> 57% |