Oparin Konstantin

From Moscow, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 4, 2025 (latest changes Sept. 3, 2025).

37 place (648.71).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (590.91 * 2.10 * 0.14 + 717.95 * 2.90 * 0.29 + 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 * 0.86 + 269.66 * 3.75 * 1 + 322.58 * 3.10 * 1) / (2.10 * 0.14 + 2.90 * 0.29 + 3.05 * 0.57 + 4.60 * 0.71 + 3.05 * 0.71 + 3.65 * 0.86 + 3.85 * 0.86 + 3.75 * 1 + 3.10 * 1) = 615.4861875628499

p2 = (990.65 * 4.60 * 0.71 + 894.74 * 3.85 * 0.86 + 772.15 * 3.65 * 0.86 + 843.14 * 3.05 * 0.57) / max_coefficients = 681.929054054054

score = 615.4861875628499 * 0.5 + 681.929054054054 * 0.5 = 648.7076208084519

Rating changes

Show

all results
Date Place Points Reason
2025-09-03 27 -> 37 685.06 -> 648.71

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 24 -> 27 695.27 -> 685.06

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 20 -> 24 695.27
2025-08-22 20 694.47 -> 695.27

Mushroom League: 29% -> 14%
2025-08-09 21 -> 20 688.99 -> 694.47

Agari Summer Tournament 2024: 86% -> 71%
2025-08-04 20 -> 21 699.87 -> 688.99

Riichi over Volga: 100% -> 86%
2025-08-03 18 -> 20 699.87
2025-07-26 18 700.21 -> 699.87

Autumn Agari tournament: 43% -> 29%
2025-07-14 20 -> 18 700.21
2025-07-12 14 -> 20 719.03 -> 700.21

X Russian Championship: 86% -> 71%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 323 2025-01-07 22/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
2 270 2024-10-13 66/90 100% 3.75 RR Moscow Riichi 2024 Moscow
3 895 2024-09-01 11/96 86% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 772 2024-08-04 19/80 86% 3.65 RR Riichi over Volga Samara
5 196 2024-06-09 42/52 71% 3.05 RR Agari Summer Tournament 2024 Moscow
6 991 2024-05-12 🥈 2/108 71% 4.60 RR X Russian Championship Perm
7 843 2024-03-10 9/52 57% 3.05 RR Agari Spring Tournament 2024 Moscow
8 718 2023-11-26 12/40 29% 2.90 CRR Autumn Agari tournament Moscow
9 591 2023-10-22 10/23 14% 2.10 CRR Mushroom League Moscow
10 692 2023-09-03 34/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg