Sirotkin Dmitry
From Moscow, Russia
EMA: 15990155
Internal rating (RR)
Rating date Sept. 18, 2025 (latest changes Sept. 14, 2025).
13 place (740.31).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (235.29 * 3.05 * 0.43 + 456.52 * 2.10 * 0.57 + 252.34 * 4.60 * 0.57 + 803.92 * 3.05 * 0.71 + 822.78 * 3.65 * 0.86 + 431.58 * 3.85 * 0.86 + 449.44 * 3.75 * 1 + 903.23 * 3.10 * 1 + 738.10 * 2.60 * 1 + 490.20 * 3.05 * 1 + 714.29 * 3.50 * 1 + 761.19 * 4.10 * 1 + 976.74 * 3 * 1 + 922.08 * 3.45 * 1) / (3.05 * 0.43 + 2.10 * 0.57 + 4.60 * 0.57 + 3.05 * 0.71 + 3.65 * 0.86 + 3.85 * 0.86 + 3.75 * 1 + 3.10 * 1 + 2.60 * 1 + 3.05 * 1 + 3.50 * 1 + 4.10 * 1 + 3 * 1 + 3.45 * 1) = 667.6199464043846
p2 = (922.08 * 3.45 * 1 + 761.19 * 4.10 * 1 + 976.74 * 3 * 1 + 903.23 * 3.10 * 1) / max_coefficients = 812.9932432432431
score = 667.6199464043846 * 0.5 + 812.9932432432431 * 0.5 = 740.3065948238138
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-12 | 13 | 739.25 -> 740.31 |
X Russian Championship: 71% -> 57% |
| 2025-09-10 | 14 -> 13 | 736.98 -> 739.25 |
Agari Spring Tournament 2024: 57% -> 43% |
| 2025-09-03 | 16 -> 14 | 735.85 -> 736.98 |
SPB Riichi Open 2023: 14% -> 0% |
| 2025-09-01 | 17 -> 16 | 723.68 -> 735.85 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 18 -> 17 | 691.94 -> 723.68 |
SPB Riichi Open 2025: 0% -> 100% |
| 2025-08-09 | 18 | 692.89 -> 691.94 |
Agari Summer Tournament 2024: 86% -> 71% |
| 2025-08-04 | 15 -> 18 | 704.42 -> 692.89 |
Riichi over Volga: 100% -> 86% |
| 2025-08-03 | 23 -> 15 | 676.61 -> 704.42 |
Two roosters and Chuckles: 0% -> 100% |
| 2025-07-30 | 23 | 676.00 -> 676.61 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-14 | 24 -> 23 | 676.00 |