Oparin Konstantin
From Moscow, Russia
Internal rating (RR)
Rating date Aug. 13, 2025 (latest changes Aug. 9, 2025).
30 place (658.70).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (691.59 * 4 * 0.14 + 843.14 * 3.05 * 0.57 + 990.65 * 4.60 * 0.71 + 196.08 * 3.05 * 0.71 + 772.15 * 3.65 * 0.86 + 894.74 * 3.85 * 1 + 269.66 * 3.75 * 1 + 322.58 * 3.10 * 1) / (4 * 0.14 + 3.05 * 0.57 + 4.60 * 0.71 + 3.05 * 0.71 + 3.65 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1) = 621.0222713005585
p2 = (894.74 * 3.85 * 1 + 990.65 * 4.60 * 0.71 + 772.15 * 3.65 * 0.86 + 843.14 * 3.05 * 0.57) / max_coefficients = 696.3690789473684
score = 621.0222713005585 * 0.5 + 696.3690789473684 * 0.5 = 658.6956751239634
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-09 | 33 -> 30 | 654.50 -> 658.70 |
Agari Summer Tournament 2024: 86% -> 71% |
| 2025-08-04 | 31 -> 33 | 666.06 -> 654.50 |
Riichi over Volga: 100% -> 86% |
| 2025-08-03 | 28 -> 31 | 666.06 | |
| 2025-07-12 | 21 -> 28 | 685.46 -> 666.06 |
X Russian Championship: 86% -> 71% |
| 2025-07-10 | 18 -> 21 | 699.19 -> 685.46 |
Agari Spring Tournament 2024: 71% -> 57% |
| 2025-07-03 | 18 | 699.91 -> 699.19 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-15 | 12 -> 18 | 711.28 -> 699.91 | |
| 2025-06-09 | 14 -> 12 | 707.42 -> 711.28 |
Agari Summer Tournament 2024: 100% -> 86% |
| 2025-05-12 | 12 -> 14 | 716.33 -> 707.42 |
X Russian Championship: 100% -> 86% |
| 2025-05-10 | 11 -> 12 | 729.68 -> 716.33 |
Agari Spring Tournament 2024: 86% -> 71% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 323 |
|
22/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 2 | 270 |
|
66/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 3 | 895 |
|
11/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 4 | 772 |
|
19/80 | 86% | 3.65 | RR | Riichi over Volga | Samara | |
| 5 | 196 |
|
42/52 | 71% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 6 | 991 |
|
🥈 | 2/108 | 71% | 4.60 | RR | X Russian Championship | Perm |
| 7 | 843 |
|
9/52 | 57% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 8 | 692 |
|
34/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |