Boiko Bogdan
From Kirov, Russia
Internal rating (RR)
Rating date Feb. 11, 2025 (latest changes Feb. 11, 2025).
110 place (325.38).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (214.95 * 4.60 * 1 + 191.49 * 2.80 * 1 + 113.92 * 3.65 * 1 + 1000 * 3.10 * 1 + 0) / (4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 3.10 * 1 + 1) = 332.72475247524756
p2 = (1000 * 3.10 * 1 + 214.95 * 4.60 * 1 + 191.49 * 2.80 * 1 + 113.92 * 3.65 * 1) / max_coefficients = 318.0302839116719
score = 332.72475247524756 * 0.5 + 318.0302839116719 * 0.5 = 325.37751819345976
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-11 | 113 -> 110 | 325.38 | |
| 2025-02-02 | 109 -> 113 | 325.38 | |
| 2025-01-26 | 106 -> 109 | 325.38 | |
| 2025-01-07 | 148 -> 106 | 135.58 -> 325.38 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 2024-11-06 | 154 -> 148 | 135.58 | |
| 2024-10-13 | 141 -> 154 | 136.85 -> 135.58 | |
| 2024-09-06 | 143 -> 141 | 136.85 | |
| 2024-09-03 | 144 -> 143 | 134.63 -> 136.85 | |
| 2024-09-01 | 133 -> 144 | 137.78 -> 134.63 | |
| 2024-08-11 | 133 | 137.11 -> 137.78 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 1000 |
|
1/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon |
| 2 | 114 |
|
71/80 | 100% | 3.65 | RR | Riichi over Volga |
| 3 | 191 |
|
39/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 4 | 215 |
|
85/108 | 100% | 4.60 | RR | X Russian Championship |