Kopylov Dmitry

From Saint Petersburg, Russia

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Internal rating (RR)

Rating date Feb. 8, 2026 (latest changes Feb. 8, 2026).

121 place (357.38).

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

p1 = (630.43 * 2.10 * 0.14 + 978.95 * 3.85 * 0.57 + 123.60 * 3.75 * 0.71 + 423.73 * 3.25 * 1 + 342.86 * 1.90 * 1 + 194.81 * 3.45 * 1) / (2.10 * 0.14 + 3.85 * 0.57 + 3.75 * 0.71 + 3.25 * 1 + 1.90 * 1 + 3.45 * 1) = 390.0590807269676

p2 = (978.95 * 3.85 * 0.57 + 423.73 * 3.25 * 1 + 194.81 * 3.45 * 1 + 342.86 * 1.90 * 1) / max_coefficients = 324.69632107023415

score = 390.0590807269676 * 0.5 + 324.69632107023415 * 0.5 = 357.3777008986009

Rating changes

Show

all results
Date Place Points Reason
2026-02-08 117 -> 121 357.38
2026-02-02 116 -> 117 357.38
2026-01-30 116 359.94 -> 357.38

Seihoku spring tournament 2024: 29% -> 14%
2026-01-25 113 -> 116 359.94
2026-01-10 114 -> 113 359.94
2026-01-07 111 -> 114 359.94
2026-01-01 105 -> 111 388.93 -> 359.94

SPB Riichi Open 2024: 71% -> 57%
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%

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 57% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 630 2024-03-30 18/47 14% 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