Ryabov Aleksandr

From Moscow, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 14, 2025 (latest changes Sept. 14, 2025).

67 place (540.50).

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

p1 = (363.64 * 2.10 * 0.14 + 897.44 * 2.90 * 0.29 + 352.94 * 3.05 * 0.43 + 925.23 * 4.60 * 0.57 + 387.10 * 1.80 * 0.71 + 221.05 * 3.85 * 0.86 + 853.93 * 3.75 * 1 + 260.87 * 2.80 * 1 + 789.47 * 1.50 * 1) / (2.10 * 0.14 + 2.90 * 0.29 + 3.05 * 0.43 + 4.60 * 0.57 + 1.80 * 0.71 + 3.85 * 0.86 + 3.75 * 1 + 2.80 * 1 + 1.50 * 1) = 570.0614100729018

p2 = (853.93 * 3.75 * 1 + 925.23 * 4.60 * 0.57 + 789.47 * 1.50 * 1 + 897.44 * 2.90 * 0.29) / max_coefficients = 510.9412162162162

score = 570.0614100729018 * 0.5 + 510.9412162162162 * 0.5 = 540.501313144559

Rating changes

Show

all results
Date Place Points Reason
2025-09-12 59 -> 67 567.41 -> 540.50

X Russian Championship: 71% -> 57%
2025-09-10 59 564.74 -> 567.41

Agari Spring Tournament 2024: 57% -> 43%
2025-09-03 60 -> 59 568.50 -> 564.74

SPB Riichi Open 2023: 14% -> 0%
2025-09-01 60 561.83 -> 568.50

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 56 -> 60 561.83
2025-08-22 58 -> 56 560.17 -> 561.83

Mushroom League: 29% -> 14%
2025-08-04 59 -> 58 557.51 -> 560.17
2025-08-03 58 -> 59 557.51
2025-07-30 59 -> 58 557.51
2025-07-26 54 -> 59 569.48 -> 557.51

Autumn Agari tournament: 43% -> 29%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 789 2025-05-17 5/20 100% 1.50 CRR HaTiKo Korolyov
2 161 2025-01-07 27/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
3 261 2024-12-01 18/24 100% 2.80 CRR Riichi never changing Moscow
4 854 2024-10-13 14/90 100% 3.75 RR Moscow Riichi 2024 Moscow
5 221 2024-09-01 75/96 86% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 387 2024-05-19 20/32 71% 1.80 CRR "Green Dragon" in the Secret Chamber Korolyov
7 925 2024-05-12 9/108 57% 4.60 RR X Russian Championship Perm
8 353 2024-03-10 34/52 43% 3.05 RR Agari Spring Tournament 2024 Moscow
9 897 2023-11-26 5/40 29% 2.90 CRR Autumn Agari tournament Moscow
10 364 2023-10-22 15/23 14% 2.10 CRR Mushroom League Moscow
11 832 2023-09-03 19/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
12 437 2023-06-11 50/88 0% 3.75 RR Money can not buy tenpai Perm
13 348 2022-12-18 16/24 0% 2.80 CRR Meeting in the billiard room Moscow
14 595 2022-06-12 46/112 0% 4.05 RR Moscow Riichi 2022 Moscow