Lavreniuk Irina
From Moscow, Russia
EMA: 15990327
Common russian riichi rating (CRR)
Rating date Dec. 6, 2025 (latest changes Dec. 4, 2025).
181 place (265.42).
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 + 473.68 * 1.50 * 0.43 + 539.33 * 3.75 * 0.86 + 294.12 * 3.05 * 1 + 67.80 * 3.25 * 1) / (3.05 * 0.29 + 2.10 * 0.29 + 4.60 * 0.43 + 1.50 * 0.43 + 3.75 * 0.86 + 3.05 * 1 + 3.25 * 1) = 295.66086320969066
p2 = (539.33 * 3.75 * 0.86 + 294.12 * 3.05 * 1 + 666.67 * 3.05 * 0.29 + 473.68 * 1.50 * 0.43) / max_coefficients = 235.18193979933113
score = 295.66086320969066 * 0.5 + 235.18193979933113 * 0.5 = 265.42140150451087
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-04 | 183 -> 181 | 265.42 | |
| 2025-11-30 | 181 -> 183 | 268.94 -> 265.42 |
Seihoku spring tournament 2024: 43% -> 29% |
| 2025-11-25 | 178 -> 181 | 273.71 -> 268.94 |
Duplicate riichi mahjong tournament 2024: 57% -> 43% |
| 2025-11-22 | 176 -> 178 | 273.71 | |
| 2025-11-15 | 177 -> 176 | 273.71 | |
| 2025-11-14 | 178 -> 177 | 273.71 | |
| 2025-11-12 | 183 -> 178 | 267.50 -> 273.71 |
X Russian Championship: 57% -> 43% |
| 2025-11-10 | 172 -> 183 | 282.43 -> 267.50 |
Agari Spring Tournament 2024: 43% -> 29% |
| 2025-11-04 | 167 -> 172 | 288.37 -> 282.43 | |
| 2025-11-01 | 169 -> 167 | 287.90 -> 288.37 |
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 | 86% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 474 |
|
11/20 | 43% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow | |
| 5 | 19 |
|
106/108 | 43% | 4.60 | RR | X Russian Championship | Perm | |
| 6 | 413 |
|
28/47 | 29% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 7 | 667 |
|
18/52 | 29% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 8 | 462 |
|
22/40 | 0% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 9 | 318 |
|
16/23 | 0% | 2.10 | CRR | Mushroom League | Moscow | |
| 10 | 421 |
|
63/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 11 | 391 |
|
54/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 12 | 0 |
|
24/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 13 | 427 |
|
44/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 14 | 604 |
|
45/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 15 | 253 |
|
57/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg |