Nikonenko Yaroslav
From Barnaul, Russia
Common russian riichi rating (CRR)
Rating date Oct. 19, 2026 (latest changes Oct. 17, 2026).
202 place (289.55).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (516.13 * 2.40 * 0.43 + 210.53 * 3.90 * 1 + 457.14 * 2.50 * 1 + 521.74 * 2.20 * 1 + 0) / (2.40 * 0.43 + 3.90 * 1 + 2.50 * 1 + 2.20 * 1 + 1) = 342.72023513826787
p2 = (521.74 * 2.20 * 1 + 457.14 * 2.50 * 1 + 210.53 * 3.90 * 1 + 516.13 * 2.40 * 0.43) / max_coefficients = 236.3822193380921
score = 342.72023513826787 * 0.5 + 236.3822193380921 * 0.5 = 289.55122723818
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-10-15 | 203 -> 202 | 289.55 | |
| 2026-10-13 | 202 -> 203 | 298.00 -> 289.55 |
Akademgorodok Riichi Mahjong Tournament 2025: 57% -> 43% |
| 2026-10-10 | 201 -> 202 | 298.00 | |
| 2026-09-26 | 199 -> 201 | 298.00 | |
| 2026-09-17 | 200 -> 199 | 298.00 | |
| 2026-09-13 | 201 -> 200 | 298.00 | |
| 2026-09-06 | 196 -> 201 | 298.00 | |
| 2026-09-03 | 197 -> 196 | 298.00 | |
| 2026-09-01 | 203 -> 197 | 298.00 | |
| 2026-08-31 | 203 | 297.60 -> 298.00 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 522 |
|
12/24 | 100% | 2.20 | CRR | Dora Hunt | Barnaul | |
| 2 | 457 |
|
20/36 | 100% | 2.50 | CRR | Akademgorodok Riichi Mahjong Tournament 2026 | Novosibirsk | |
| 3 | 211 |
|
46/58 | 100% | 3.90 | RR | XI Russian Championship | Moscow | |
| 4 | 516 |
|
16/32 | 43% | 2.40 | CRR | Akademgorodok Riichi Mahjong Tournament 2025 | Novosibirsk | |
| 5 | 933 |
|
🥈 | 2/16 | 0% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 | Novosibirsk |