Oparin Konstantin

From Moscow, Russia

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Internal rating (RR)

Rating date July 25, 2026 (latest changes July 18, 2026).

105 place (416.19).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (772.15 * 3.65 * 0.14 + 894.74 * 3.85 * 0.14 + 269.66 * 3.75 * 0.29 + 322.58 * 3.10 * 0.43 + 160 * 3.10 * 1 + 703.70 * 2.45 * 1 + 587.41 * 4.71 * 1) / (3.65 * 0.14 + 3.85 * 0.14 + 3.75 * 0.29 + 3.10 * 0.43 + 3.10 * 1 + 2.45 * 1 + 4.71 * 1) = 480.5842794654882

p2 = (587.41 * 4.71 * 1 + 703.70 * 2.45 * 1 + 160 * 3.10 * 1 + 894.74 * 3.85 * 0.14) / max_coefficients = 351.80373067867123

score = 480.5842794654882 * 0.5 + 351.80373067867123 * 0.5 = 416.1940050720797

Rating changes

Show

all results
Date Place Points Reason
2026-07-18 104 -> 105 416.19
2026-07-14 105 -> 104 416.19
2026-07-12 103 -> 105 416.19
2026-07-07 103 416.27 -> 416.19

Moscow Open Riichi Marathon: 57% -> 43%
2026-07-01 96 -> 103 439.76 -> 416.27

SPB Riichi Open 2024: 29% -> 14%
2026-06-16 97 -> 96 439.76
2026-06-15 97 432.73 -> 439.76
2026-06-14 112 -> 97 350.17 -> 432.73

XII Russian Championship: 0% -> 100%
2026-06-13 114 -> 112 345.69 -> 350.17

Moscow Riichi 2024: 43% -> 29%
2026-06-09 122 -> 114 340.91 -> 345.69

Agari Summer Tournament 2024: 14% -> 0%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 587 2026-06-14 60/144 100% 4.71 RR XII Russian Championship Samara
2 704 2026-05-17 9/28 100% 2.45 RR Hatiko under the sakura Korolyov
3 160 2026-04-05 43/51 100% 3.10 RR Moscow Riichi 2026 Moscow
4 323 2025-01-07 22/32 43% 3.10 RR Moscow Open Riichi Marathon Moscow
5 270 2024-10-13 66/90 29% 3.75 RR Moscow Riichi 2024 Moscow
6 895 2024-09-01 11/96 14% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
7 772 2024-08-04 19/80 14% 3.65 RR Riichi over Volga Samara
8 196 2024-06-09 42/52 0% 3.05 RR Agari Summer Tournament 2024 Moscow
9 991 2024-05-12 🥈 2/108 0% 4.60 RR X Russian Championship Perm
10 843 2024-03-10 9/52 0% 3.05 RR Agari Spring Tournament 2024 Moscow
11 692 2023-09-03 34/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg