Medvedev Sergei

From Moscow, Russia

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Internal rating (RR)

Rating date July 22, 2026 (latest changes July 18, 2026).

93 place (438.64).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (370.79 * 3.75 * 0.29 + 516.13 * 3.10 * 0.43 + 766.67 * 3 * 1 + 489.51 * 4.71 * 1 + 0) / (3.75 * 0.29 + 3.10 * 0.43 + 3 * 1 + 4.71 * 1 + 1) = 512.0235894846417

p2 = (489.51 * 4.71 * 1 + 766.67 * 3 * 1 + 516.13 * 3.10 * 0.43 + 370.79 * 3.75 * 0.29) / max_coefficients = 365.26003733118625

score = 512.0235894846417 * 0.5 + 365.26003733118625 * 0.5 = 438.64181340791396

Rating changes

Show

all results
Date Place Points Reason
2026-07-18 92 -> 93 438.64
2026-07-12 91 -> 92 438.64
2026-07-07 90 -> 91 446.06 -> 438.64

Moscow Open Riichi Marathon: 57% -> 43%
2026-07-03 91 -> 90 446.06
2026-07-02 92 -> 91 446.06
2026-07-01 93 -> 92 446.06
2026-06-26 94 -> 93 446.06
2026-06-16 96 -> 94 446.06
2026-06-15 95 -> 96 439.17 -> 446.06
2026-06-14 110 -> 95 351.84 -> 439.17

XII Russian Championship: 0% -> 100%

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
2 767 2026-01-07 8/31 100% 3.00 RR Moscow Open Riichi Marathon 2026 Moscow
3 516 2025-01-07 16/32 43% 3.10 RR Moscow Open Riichi Marathon Moscow
4 371 2024-10-13 57/90 29% 3.75 RR Moscow Riichi 2024 Moscow
5 736 2023-06-11 24/88 0% 3.75 RR Money can not buy tenpai Perm
6 587 2022-11-06 32/76 0% 4.20 RR IX Russian Riichi Championship Perm
7 360 2022-06-12 72/112 0% 4.05 RR Moscow Riichi 2022 Moscow