Kopylov Dmitry

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date July 28, 2023 (latest changes July 28, 2023).

115 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
2023-07-28 116 -> 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
2023-04-19 97 85.77 -> 86.48
2023-03-28 97 85.05 -> 85.77
2023-03-20 97 83.70 -> 85.05
2023-02-19 97 83.21 -> 83.70

Tournaments

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