Medvedev Sergei

From Moscow, Russia

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Common russian riichi rating (CRR)

Rating date Oct. 13, 2025 (latest changes Oct. 13, 2025).

142 place (328.77).

max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835

p1 = (903.23 * 1.80 * 0.57 + 370.79 * 3.75 * 0.86 + 516.13 * 3.10 * 1 + 0 + 0) / (1.80 * 0.57 + 3.75 * 0.86 + 3.10 * 1 + 1 + 1) = 398.2533854170847

p2 = (516.13 * 3.10 * 1 + 370.79 * 3.75 * 0.86 + 903.23 * 1.80 * 0.57) / max_coefficients = 259.2879987818675

score = 398.2533854170847 * 0.5 + 259.2879987818675 * 0.5 = 328.7706920994761

Rating changes

Show

all results
Date Place Points Reason
2025-10-13 141 -> 142 330.80 -> 328.77

Moscow Riichi 2024: 100% -> 86%
2025-10-04 142 -> 141 330.80
2025-09-19 138 -> 142 345.07 -> 330.80

"Green Dragon" in the Secret Chamber: 71% -> 57%
2025-09-12 139 -> 138 345.07
2025-09-05 140 -> 139 345.07
2025-09-03 142 -> 140 345.07
2025-09-01 144 -> 142 341.38 -> 345.07
2025-08-31 141 -> 144 341.38
2025-08-26 142 -> 141 341.38
2025-08-04 142 340.04 -> 341.38

Tournaments

# Base rank Date Place Power Coefficient Type 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 86% 3.75 RR Moscow Riichi 2024 Moscow
3 903 2024-05-19 4/32 57% 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