Lavreniuk Irina
From Moscow, Russia
EMA: 15990327
Internal rating (RR)
Rating date Dec. 27, 2025 (latest changes Dec. 13, 2025).
168 place (244.01).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (666.67 * 3.05 * 0.29 + 413.04 * 2.10 * 0.29 + 18.69 * 4.60 * 0.43 + 539.33 * 3.75 * 0.71 + 294.12 * 3.05 * 1 + 67.80 * 3.25 * 1) / (3.05 * 0.29 + 2.10 * 0.29 + 4.60 * 0.43 + 3.75 * 0.71 + 3.05 * 1 + 3.25 * 1) = 275.9424354790147
p2 = (539.33 * 3.75 * 0.71 + 294.12 * 3.05 * 1 + 666.67 * 3.05 * 0.29 + 413.04 * 2.10 * 0.29) / max_coefficients = 212.06956521739133
score = 275.9424354790147 * 0.5 + 212.06956521739133 * 0.5 = 244.00600034820303
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-13 | 161 -> 168 | 259.11 -> 244.01 |
Moscow Riichi 2024: 86% -> 71% |
| 2025-12-07 | 156 -> 161 | 259.11 | |
| 2025-11-30 | 156 | 264.68 -> 259.11 |
Seihoku spring tournament 2024: 43% -> 29% |
| 2025-11-12 | 160 -> 156 | 258.29 -> 264.68 |
X Russian Championship: 57% -> 43% |
| 2025-11-10 | 154 -> 160 | 273.92 -> 258.29 |
Agari Spring Tournament 2024: 43% -> 29% |
| 2025-11-04 | 148 -> 154 | 279.81 -> 273.92 | |
| 2025-11-01 | 149 -> 148 | 279.34 -> 279.81 | |
| 2025-10-13 | 145 -> 149 | 289.51 -> 279.34 |
Moscow Riichi 2024: 100% -> 86% |
| 2025-09-30 | 142 -> 145 | 294.83 -> 289.51 |
Seihoku spring tournament 2024: 57% -> 43% |
| 2025-09-12 | 147 -> 142 | 289.00 -> 294.83 |
X Russian Championship: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 68 |
|
56/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 2 | 294 |
|
37/52 | 100% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 3 | 539 |
|
42/90 | 71% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 19 |
|
106/108 | 43% | 4.60 | RR | X Russian Championship | Perm | |
| 5 | 413 |
|
28/47 | 29% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 6 | 667 |
|
18/52 | 29% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 7 | 421 |
|
63/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 8 | 391 |
|
54/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 9 | 427 |
|
44/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 10 | 604 |
|
45/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 11 | 253 |
|
57/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg |