Bykov Dmitriy
From Saint Petersburg, Russia
EMA: 15990236
Common russian riichi rating (CRR)
Rating date May 31, 2025 (latest changes May 30, 2025).
237 place (135.78).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (299.07 * 4 * 0.29 + 578.95 * 1.50 * 0.86 + 0 + 0 + 0) / (4 * 0.29 + 1.50 * 0.86 + 1 + 1 + 1) = 200.07368585876267
p2 = (578.95 * 1.50 * 0.86 + 299.07 * 4 * 0.29) / max_coefficients = 71.48781056115257
score = 200.07368585876267 * 0.5 + 71.48781056115257 * 0.5 = 135.7807482099576
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-05-25 | 236 -> 237 | 147.06 -> 135.78 |
Duplicate riichi mahjong tournament 2024: 100% -> 86% |
2025-05-17 | 233 -> 236 | 147.06 | |
2025-05-12 | 234 -> 233 | 145.41 -> 147.06 | |
2025-05-03 | 223 -> 234 | 154.69 -> 145.41 |
SPB Riichi Open 2023: 43% -> 29% |
2025-04-27 | 217 -> 223 | 154.69 | |
2025-04-26 | 216 -> 217 | 154.69 | |
2025-04-22 | 221 -> 216 | 154.69 | |
2025-04-13 | 219 -> 221 | 154.69 | |
2025-04-11 | 220 -> 219 | 154.69 | |
2025-03-29 | 217 -> 220 | 154.69 |