Bogatov Aleksei
From Samara, Russia
Common russian riichi rating (CRR)
Rating date Jan. 31, 2026 (latest changes Jan. 30, 2026).
236 place (174.02).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (556.96 * 3.65 * 0.57 + 238.10 * 2.60 * 0.86 + 157.14 * 3.50 * 1 + 18.18 * 3 * 1 + 0) / (3.65 * 0.57 + 2.60 * 0.86 + 3.50 * 1 + 3 * 1 + 1) = 194.40802365315253
p2 = (556.96 * 3.65 * 0.57 + 157.14 * 3.50 * 1 + 238.10 * 2.60 * 0.86 + 18.18 * 3 * 1) / max_coefficients = 153.62876254180603
score = 194.40802365315253 * 0.5 + 153.62876254180603 * 0.5 = 174.01839309747928
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-26 | 235 -> 236 | 177.64 -> 174.02 |
Riichi On Ice: 100% -> 86% |
| 2026-01-25 | 225 -> 235 | 192.36 -> 177.64 |
Riichi On Ice 2026: 0% -> 100% |
| 2026-01-12 | 227 -> 225 | 192.36 | |
| 2026-01-10 | 228 -> 227 | 192.36 | |
| 2026-01-05 | 229 -> 228 | 192.36 | |
| 2026-01-03 | 228 -> 229 | 192.36 | |
| 2026-01-01 | 229 -> 228 | 192.36 | |
| 2025-12-27 | 226 -> 229 | 192.36 | |
| 2025-12-07 | 222 -> 226 | 192.36 | |
| 2025-12-06 | 220 -> 222 | 192.36 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 18 |
|
55/56 | 100% | 3.00 | RR | Riichi On Ice 2026 | Samara | |
| 2 | 157 |
|
60/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 3 | 238 |
|
33/43 | 86% | 2.60 | RR | Riichi On Ice | Samara | |
| 4 | 557 |
|
36/80 | 57% | 3.65 | RR | Riichi over Volga | Samara |