Kopylov Dmitry

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date July 20, 2023 (latest changes July 20, 2023).

117 place (81.85).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 3.50 * 0.57) = 13.421155

p1 = (135.14 * 4.05 * 0.86 + 120 * 4.20 * 1 + 0 + 0 + 0) / (4.05 * 0.86 + 4.20 * 1 + 1 + 1 + 1) = 91.1879624280368

p2 = (120 * 4.20 * 1 + 135.14 * 4.05 * 0.86) / max_coefficients = 72.50419207586827

score = 91.1879624280368 * 0.5 + 72.50419207586827 * 0.5 = 81.84607725195254

Rating changes

Show

all results
Date Place Points Reason
2023-07-20 117 80.54 -> 81.85
2023-06-12 117 82.98 -> 80.54

Moscow Riichi 2022: 100% -> 86%
2023-06-11 97 -> 117 88.70 -> 82.98
2023-05-28 97 88.04 -> 88.70
2023-05-20 97 86.48 -> 88.04
2023-05-05 97 86.48

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 120 2022-11-06 67/76 100% 4.20 RR IX Russian Riichi Championship Perm
2 135 2022-06-12 97/112 86% 4.05 RR Moscow Riichi 2022 Moscow