Arzamastsev Vitalii
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date July 14, 2026 (latest changes July 14, 2026).
283 place (177.25).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (0 * 2.50 * 1 + 774.19 * 2.40 * 1 + 0 + 0 + 0) / (2.50 * 1 + 2.40 * 1 + 1 + 1 + 1) = 235.19746835443036
p2 = (774.19 * 2.40 * 1 + 0 * 2.50 * 1) / max_coefficients = 119.30440969018456
score = 235.19746835443036 * 0.5 + 119.30440969018456 * 0.5 = 177.25093902230745
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-07-13 | 284 -> 283 | 177.25 | |
| 2026-07-12 | 284 | 177.25 |
Poplar fluff. Mahjong. July.: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 774 |
|
8/32 | 100% | 2.40 | RR | Poplar fluff. Mahjong. July. | Yekaterinburg | |
| 2 | 0 |
|
36/36 | 100% | 2.50 | RR | One tsumo until spring | Yekaterinburg |