Boiko Bogdan
From Kirov, Russia
Common russian riichi rating (CRR)
Rating date Feb. 22, 2025 (latest changes Feb. 22, 2025).
113 place (377.12).
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 + 1000 * 3.10 * 1) / (4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 1.50 * 1 + 3.10 * 1) = 392.71821086261986
p2 = (1000 * 3.10 * 1 + 736.84 * 1.50 * 1 + 214.95 * 4.60 * 1 + 191.49 * 2.80 * 1) / max_coefficients = 361.5280757097792
score = 392.71821086261986 * 0.5 + 361.5280757097792 * 0.5 = 377.12314328619954
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-16 | 108 -> 113 | 377.12 | |
| 2025-02-11 | 106 -> 108 | 377.12 | |
| 2025-02-02 | 105 -> 106 | 377.12 | |
| 2025-01-26 | 104 -> 105 | 377.12 | |
| 2025-01-07 | 169 -> 104 | 208.49 -> 377.12 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 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 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 1000 |
|
1/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon |
| 2 | 737 |
|
6/20 | 100% | 1.50 | CRR | Dirty Riichi |
| 3 | 114 |
|
71/80 | 100% | 3.65 | RR | Riichi over Volga |
| 4 | 191 |
|
39/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 5 | 215 |
|
85/108 | 100% | 4.60 | RR | X Russian Championship |