Kopylov Dmitry

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date Dec. 30, 2025 (latest changes Dec. 13, 2025).

105 place (388.93).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (630.43 * 2.10 * 0.29 + 978.95 * 3.85 * 0.71 + 123.60 * 3.75 * 0.71 + 423.73 * 3.25 * 1 + 342.86 * 1.90 * 1 + 194.81 * 3.45 * 1) / (2.10 * 0.29 + 3.85 * 0.71 + 3.75 * 0.71 + 3.25 * 1 + 1.90 * 1 + 3.45 * 1) = 417.133501724356

p2 = (978.95 * 3.85 * 0.71 + 423.73 * 3.25 * 1 + 194.81 * 3.45 * 1 + 342.86 * 1.90 * 1) / max_coefficients = 360.7217391304348

score = 417.133501724356 * 0.5 + 360.7217391304348 * 0.5 = 388.92762042739537

Rating changes

Show

all results
Date Place Points Reason
2025-12-13 108 -> 105 383.74 -> 388.93

Moscow Riichi 2024: 86% -> 71%
2025-12-07 107 -> 108 383.74
2025-11-30 105 -> 107 385.91 -> 383.74

Seihoku spring tournament 2024: 43% -> 29%
2025-11-10 106 -> 105 385.91
2025-11-04 102 -> 106 394.11 -> 385.91
2025-11-01 98 -> 102 421.96 -> 394.11

SPB Riichi Open 2024: 86% -> 71%
2025-10-13 100 -> 98 410.70 -> 421.96

Moscow Riichi 2024: 100% -> 86%
2025-10-09 101 -> 100 410.70
2025-09-30 100 -> 101 416.12 -> 410.70

Seihoku spring tournament 2024: 57% -> 43%
2025-09-10 101 -> 100 416.12

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 195 2025-08-31 63/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
2 343 2025-04-26 24/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
3 424 2025-02-16 35/60 100% 3.25 RR White Wolf Cup Saint Petersburg
4 124 2024-10-13 79/90 71% 3.75 RR Moscow Riichi 2024 Moscow
5 979 2024-09-01 🥉 3/96 71% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 630 2024-03-30 18/47 29% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
7 206 2023-09-03 86/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
8 120 2022-11-06 67/76 0% 4.20 RR IX Russian Riichi Championship Perm
9 135 2022-06-12 97/112 0% 4.05 RR Moscow Riichi 2022 Moscow