Medvedev Sergei

From Moscow, Russia

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Common russian riichi rating (CRR)

Rating date Sept. 14, 2026 (latest changes Sept. 13, 2026).

107 place (473.42).

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

p1 = (370.79 * 3.75 * 0.14 + 516.13 * 3.10 * 0.29 + 766.67 * 3 * 1 + 450.98 * 2.30 * 1 + 489.51 * 4.71 * 1) / (3.75 * 0.14 + 3.10 * 0.29 + 3 * 1 + 2.30 * 1 + 4.71 * 1) = 550.9893894482329

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 = 550.9893894482329 * 0.5 + 395.8442569759896 * 0.5 = 473.41682321211124

Rating changes

Show

all results
Date Place Points Reason
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
2026-08-30 101 -> 103 479.52
2026-08-16 97 -> 101 479.52
2026-08-15 96 -> 97 478.02 -> 479.52
2026-08-13 98 -> 96 474.16 -> 478.02

Moscow Riichi 2024: 29% -> 14%
2026-08-08 97 -> 98 474.16
2026-08-04 98 -> 97 474.16
2026-08-03 99 -> 98 474.16

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 14% 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