Boiko Bogdan
From Kirov, Russia
Common russian riichi rating (CRR)
Rating date Oct. 11, 2024 (latest changes Oct. 11, 2024).
171 place (136.85).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (214.95 * 4.60 * 1 + 191.49 * 2.80 * 1 + 113.92 * 3.65 * 1 + 0 + 0) / (4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 1 + 1) = 148.71877394636016
p2 = (214.95 * 4.60 * 1 + 191.49 * 2.80 * 1 + 113.92 * 3.65 * 1) / max_coefficients = 124.9826125035419
score = 148.71877394636016 * 0.5 + 124.9826125035419 * 0.5 = 136.85069322495104
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-10-11 | 172 -> 171 | 136.85 | |
| 2024-09-15 | 169 -> 172 | 136.85 | |
| 2024-09-06 | 172 -> 169 | 136.85 | |
| 2024-09-03 | 172 | 134.63 -> 136.85 | |
| 2024-09-01 | 164 -> 172 | 137.78 -> 134.63 | |
| 2024-08-27 | 165 -> 164 | 137.78 | |
| 2024-08-26 | 170 -> 165 | 137.78 | |
| 2024-08-25 | 171 -> 170 | 137.78 | |
| 2024-08-20 | 172 -> 171 | 137.78 | |
| 2024-08-11 | 172 | 137.11 -> 137.78 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 114 |
|
71/80 | 100% | 3.65 | RR | Riichi over Volga |
| 2 | 191 |
|
39/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 3 | 215 |
|
85/108 | 100% | 4.60 | RR | X Russian Championship |