Ryabov Aleksandr

From Moscow, Russia

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Internal rating (RR)

Rating date Nov. 4, 2025 (latest changes Nov. 1, 2025).

75 place (479.20).

max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.25 * 1) = 14.3

p1 = (352.94 * 3.05 * 0.43 + 925.23 * 4.60 * 0.57 + 221.05 * 3.85 * 0.71 + 853.93 * 3.75 * 0.86 + 161.29 * 3.10 * 1) / (3.05 * 0.43 + 4.60 * 0.57 + 3.85 * 0.71 + 3.75 * 0.86 + 3.10 * 1) = 518.9182952110987

p2 = (853.93 * 3.75 * 0.86 + 925.23 * 4.60 * 0.57 + 221.05 * 3.85 * 0.71 + 161.29 * 3.10 * 1) / max_coefficients = 439.47412587412583

score = 518.9182952110987 * 0.5 + 439.47412587412583 * 0.5 = 479.1962105426122

Rating changes

Show

all results
Date Place Points Reason
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%
2025-08-31 62 -> 68 519.95
2025-08-09 63 -> 62 519.95
2025-08-04 62 -> 63 517.47 -> 519.95

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 57% 4.60 RR X Russian Championship Perm
5 353 2024-03-10 34/52 43% 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