Medvedev Sergei

From Moscow, Russia

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Common russian riichi rating (CRR)

Rating date Oct. 28, 2026 (latest changes Oct. 27, 2026).

110 place (454.32).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (516.13 * 3.10 * 0.29 + 766.67 * 3 * 1 + 450.98 * 2.30 * 1 + 489.51 * 4.71 * 1 + 0) / (3.10 * 0.29 + 3 * 1 + 2.30 * 1 + 4.71 * 1 + 1) = 512.7882666550098

p2 = (489.51 * 4.71 * 1 + 766.67 * 3 * 1 + 450.98 * 2.30 * 1 + 516.13 * 3.10 * 0.29) / max_coefficients = 395.8442569759896

score = 512.7882666550098 * 0.5 + 395.8442569759896 * 0.5 = 454.31626181549973

Rating changes

Show

all results
Date Place Points Reason
2026-10-27 112 -> 110 454.32
2026-10-24 111 -> 112 454.32
2026-10-17 112 -> 111 454.32
2026-10-13 103 -> 112 473.42 -> 454.32

Moscow Riichi 2024: 14% -> 0%
2026-10-03 104 -> 103 473.42
2026-10-02 106 -> 104 473.42
2026-09-17 107 -> 106 473.42
2026-09-07 105 -> 107 480.19 -> 473.42

Moscow Open Riichi Marathon: 43% -> 29%
2026-09-06 102 -> 105 480.19
2026-08-31 103 -> 102 479.52 -> 480.19

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 490 2026-06-14 74/144 100% 4.71 RR XII Russian Championship Samara
2 451 2026-03-14 29/52 100% 2.30 CRR "Furin" club tournament: for the anniversary Moscow
3 767 2026-01-07 8/31 100% 3.00 RR Moscow Open Riichi Marathon 2026 Moscow
4 516 2025-01-07 16/32 29% 3.10 RR Moscow Open Riichi Marathon Moscow
5 371 2024-10-13 57/90 0% 3.75 RR Moscow Riichi 2024 Moscow
6 903 2024-05-19 4/32 0% 1.80 CRR "Green Dragon" in the Secret Chamber Korolyov
7 736 2023-06-11 24/88 0% 3.75 RR Money can not buy tenpai Perm
8 587 2022-11-06 32/76 0% 4.20 RR IX Russian Riichi Championship Perm
9 360 2022-06-12 72/112 0% 4.05 RR Moscow Riichi 2022 Moscow