Oparin Konstantin

From Moscow, Russia

Player page

Internal rating (RR)

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

37 place (646.82).

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

p1 = (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) / (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) = 611.7020328853478

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 = 611.7020328853478 * 0.5 + 681.929054054054 * 0.5 = 646.8155434697009

Rating changes

Show

all results
Date Place Points Reason
2025-09-03 36 -> 37 647.90 -> 646.82

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 32 -> 36 658.70 -> 647.90

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 30 -> 32 658.70
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

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
8 692 2023-09-03 34/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg