Grishin Aleksei
From Penza, Russia
Common russian riichi rating (CRR)
Rating date May 20, 2025 (latest changes May 19, 2025).
205 place (210.65).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (417.72 * 3.65 * 1 + 333.33 * 2.60 * 1 + 114.29 * 3.50 * 1 + 0 + 0) / (3.65 * 1 + 2.60 * 1 + 3.50 * 1 + 1 + 1) = 237.56170212765957
p2 = (417.72 * 3.65 * 1 + 333.33 * 2.60 * 1 + 114.29 * 3.50 * 1) / max_coefficients = 183.73016970036846
score = 237.56170212765957 * 0.5 + 183.73016970036846 * 0.5 = 210.64593591401402
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-05-17 | 203 -> 205 | 210.65 | |
| 2025-05-12 | 205 -> 203 | 206.84 -> 210.65 | |
| 2025-05-03 | 205 | 204.70 -> 206.84 |
Riichi over The Volga 2025: 0% -> 100% |
| 2025-04-27 | 202 -> 205 | 204.70 | |
| 2025-04-22 | 203 -> 202 | 204.70 | |
| 2025-04-13 | 201 -> 203 | 204.70 | |
| 2025-03-30 | 202 -> 201 | 204.70 | |
| 2025-03-29 | 200 -> 202 | 204.70 | |
| 2025-03-23 | 194 -> 200 | 204.70 | |
| 2025-03-03 | 195 -> 194 | 204.70 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 114 |
|
63/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 2 | 333 |
|
29/43 | 100% | 2.60 | RR | Riichi On Ice | Samara |
| 3 | 418 |
|
47/80 | 100% | 3.65 | RR | Riichi over Volga | Samara |
| 4 | 870 |
|
4/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov |