Medvedev Sergei

From Moscow, Russia

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Common russian riichi rating (CRR)

Rating date Dec. 14, 2025 (latest changes Dec. 13, 2025).

164 place (302.43).

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

p1 = (903.23 * 1.80 * 0.43 + 370.79 * 3.75 * 0.71 + 516.13 * 3.10 * 1 + 0 + 0) / (1.80 * 0.43 + 3.75 * 0.71 + 3.10 * 1 + 1 + 1) = 384.7929352914379

p2 = (516.13 * 3.10 * 1 + 370.79 * 3.75 * 0.71 + 903.23 * 1.80 * 0.43) / max_coefficients = 220.06822742474918

score = 384.7929352914379 * 0.5 + 220.06822742474918 * 0.5 = 302.43058135809355

Rating changes

Show

all results
Date Place Points Reason
2025-12-13 162 -> 164 308.66 -> 302.43

Moscow Riichi 2024: 86% -> 71%
2025-12-07 156 -> 162 308.66
2025-12-06 154 -> 156 308.66
2025-12-04 156 -> 154 308.66
2025-11-25 157 -> 156 308.66
2025-11-22 155 -> 157 308.66
2025-11-19 145 -> 155 323.57 -> 308.66

"Green Dragon" in the Secret Chamber: 57% -> 43%
2025-11-14 146 -> 145 323.57
2025-11-12 149 -> 146 323.57
2025-11-04 141 -> 149 329.22 -> 323.57

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 516 2025-01-07 16/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
2 371 2024-10-13 57/90 71% 3.75 RR Moscow Riichi 2024 Moscow
3 903 2024-05-19 4/32 43% 1.80 CRR "Green Dragon" in the Secret Chamber Korolyov
4 736 2023-06-11 24/88 0% 3.75 RR Money can not buy tenpai Perm
5 587 2022-11-06 32/76 0% 4.20 RR IX Russian Riichi Championship Perm
6 360 2022-06-12 72/112 0% 4.05 RR Moscow Riichi 2022 Moscow