Ryabov Aleksandr

Winner Kawa-league

From Moscow, Russia

Player page

Internal rating (RR)

Rating date Nov. 25, 2025 (latest changes Nov. 14, 2025).

89 place (441.15).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (352.94 * 3.05 * 0.29 + 925.23 * 4.60 * 0.43 + 221.05 * 3.85 * 0.71 + 853.93 * 3.75 * 0.86 + 161.29 * 3.10 * 1) / (3.05 * 0.29 + 4.60 * 0.43 + 3.85 * 0.71 + 3.75 * 0.86 + 3.10 * 1) = 502.57807825146716

p2 = (853.93 * 3.75 * 0.86 + 925.23 * 4.60 * 0.43 + 221.05 * 3.85 * 0.71 + 161.29 * 3.10 * 1) / max_coefficients = 379.7130434782609

score = 502.57807825146716 * 0.5 + 379.7130434782609 * 0.5 = 441.145560864864

Rating changes

Show

all results
Date Place Points Reason
2025-11-12 78 -> 89 472.52 -> 441.15

X Russian Championship: 57% -> 43%
2025-11-10 79 -> 78 469.64 -> 472.52

Agari Spring Tournament 2024: 43% -> 29%
2025-11-04 75 -> 79 479.20 -> 469.64
2025-11-01 78 -> 75 476.62 -> 479.20

SPB Riichi Open 2024: 86% -> 71%
2025-10-13 71 -> 78 491.90 -> 476.62

Moscow Riichi 2024: 100% -> 86%
2025-10-04 73 -> 71 491.90
2025-09-12 67 -> 73 521.48 -> 491.90

X Russian Championship: 71% -> 57%
2025-09-10 67 522.71 -> 521.48

Agari Spring Tournament 2024: 57% -> 43%
2025-09-03 65 -> 67 528.13 -> 522.71

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 68 -> 65 519.95 -> 528.13

SPB Riichi Open 2024: 100% -> 86%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 161 2025-01-07 27/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
2 854 2024-10-13 14/90 86% 3.75 RR Moscow Riichi 2024 Moscow
3 221 2024-09-01 75/96 71% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 925 2024-05-12 9/108 43% 4.60 RR X Russian Championship Perm
5 353 2024-03-10 34/52 29% 3.05 RR Agari Spring Tournament 2024 Moscow
6 832 2023-09-03 19/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 437 2023-06-11 50/88 0% 3.75 RR Money can not buy tenpai Perm
8 595 2022-06-12 46/112 0% 4.05 RR Moscow Riichi 2022 Moscow