Kopylov Dmitry

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date Sept. 6, 2023 (latest changes Sept. 6, 2023).

128 place (123.43).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915

p1 = (135.14 * 4.05 * 0.71 + 120 * 4.20 * 1 + 205.61 * 4 * 1 + 0 + 0) / (4.05 * 0.71 + 4.20 * 1 + 4 * 1 + 1 + 1) = 131.16712359317998

p2 = (205.61 * 4 * 1 + 120 * 4.20 * 1 + 135.14 * 4.05 * 0.71) / max_coefficients = 115.70234014006009

score = 131.16712359317998 * 0.5 + 115.70234014006009 * 0.5 = 123.43473186662004

Rating changes

Show

all results
Date Place Points Reason
2023-09-06 129 -> 128 123.43
2023-09-03 115 -> 129 79.18 -> 123.43

SPB Riichi Open 2023: 0% -> 100%
2023-08-19 116 -> 115 79.18
2023-08-12 115 -> 116 81.85 -> 79.18

Moscow Riichi 2022: 86% -> 71%
2023-07-28 116 -> 115 81.85
2023-07-20 116 80.54 -> 81.85
2023-06-12 116 82.98 -> 80.54

Moscow Riichi 2022: 100% -> 86%
2023-06-11 97 -> 116 88.70 -> 82.98
2023-05-28 97 88.04 -> 88.70
2023-05-20 97 86.48 -> 88.04

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 206 2023-09-03 86/108 100% 4.00 RR SPB Riichi Open 2023
2 120 2022-11-06 67/76 100% 4.20 RR IX Russian Riichi Championship
3 135 2022-06-12 97/112 71% 4.05 RR Moscow Riichi 2022