Ryazanov Aleksandr

From Samara, Russia

EMA: 15990057

Player page

Common russian riichi rating (CRR)

Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).

143 place (343.85).

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

p1 = (569.62 * 3.65 * 0.57 + 719.10 * 3.75 * 0.86 + 23.81 * 2.60 * 1 + 314.29 * 3.50 * 1 + 0) / (3.65 * 0.57 + 3.75 * 0.86 + 2.60 * 1 + 3.50 * 1 + 1) = 375.91045292500206

p2 = (719.10 * 3.75 * 0.86 + 569.62 * 3.65 * 0.57 + 314.29 * 3.50 * 1 + 23.81 * 2.60 * 1) / max_coefficients = 311.7852842809364

score = 375.91045292500206 * 0.5 + 311.7852842809364 * 0.5 = 343.84786860296924

Rating changes

Show

all results
Date Place Points Reason
2025-12-07 137 -> 143 343.85
2025-12-06 135 -> 137 343.85
2025-12-04 130 -> 135 357.69 -> 343.85

Riichi over Volga: 71% -> 57%
2025-11-22 128 -> 130 357.69
2025-11-19 129 -> 128 357.69
2025-11-10 131 -> 129 357.69
2025-11-04 125 -> 131 365.23 -> 357.69
2025-11-01 125 364.63 -> 365.23
2025-10-13 124 -> 125 379.07 -> 364.63

Moscow Riichi 2024: 100% -> 86%
2025-10-04 117 -> 124 392.32 -> 379.07

Riichi over Volga: 86% -> 71%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 314 2025-05-03 49/71 100% 3.50 RR Riichi over The Volga 2025 Samara
2 24 2025-01-26 42/43 100% 2.60 RR Riichi On Ice Samara
3 719 2024-10-13 26/90 86% 3.75 RR Moscow Riichi 2024 Moscow
4 570 2024-08-04 35/80 57% 3.65 RR Riichi over Volga Samara
5 316 2019-02-24 14/20 0% 1.30 CRR Mahjong tournament at the Intellectual Games Festival 2019 Samara
6 727 2017-02-26 4/12 0% 1.10 CRR Mahjong tournament at the Intellectual Games Festival 2017 Samara
7 486 2011-04-23 19/36 0% 0.90 EMA Moscow Riichi 2011 Moscow