Boiko Bogdan
From Kirov, Russia
Common russian riichi rating (CRR)
Rating date Jan. 5, 2025 (latest changes Jan. 5, 2025).
169 place (208.49).
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 + 736.84 * 1.50 * 1 + 0) / (4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 1.50 * 1 + 1) = 224.8
p2 = (736.84 * 1.50 * 1 + 214.95 * 4.60 * 1 + 191.49 * 2.80 * 1 + 113.92 * 3.65 * 1) / max_coefficients = 192.17917981072557
score = 224.8 * 0.5 + 192.17917981072557 * 0.5 = 208.48958990536278
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-04 | 187 -> 169 | 135.58 -> 208.49 |
Dirty Riichi: 0% -> 100% |
| 2025-01-03 | 188 -> 187 | 135.58 | |
| 2024-12-29 | 187 -> 188 | 135.58 | |
| 2024-11-14 | 189 -> 187 | 135.58 | |
| 2024-11-05 | 191 -> 189 | 135.58 | |
| 2024-11-04 | 187 -> 191 | 135.58 | |
| 2024-10-27 | 186 -> 187 | 135.58 | |
| 2024-10-13 | 171 -> 186 | 136.85 -> 135.58 | |
| 2024-10-11 | 172 -> 171 | 136.85 | |
| 2024-09-15 | 169 -> 172 | 136.85 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 737 |
|
6/20 | 100% | 1.50 | CRR | Dirty Riichi |
| 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 |