Lavreniuk Irina
From Moscow, Russia
EMA: 15990327
Common russian riichi rating (CRR)
Rating date April 20, 2026 (latest changes April 19, 2026).
195 place (293.32).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (18.69 * 4.60 * 0.14 + 473.68 * 1.50 * 0.14 + 539.33 * 3.75 * 0.43 + 294.12 * 3.05 * 0.71 + 67.80 * 3.25 * 0.71 + 705.88 * 2.30 * 1) / (4.60 * 0.14 + 1.50 * 0.14 + 3.75 * 0.43 + 3.05 * 0.71 + 3.25 * 0.71 + 2.30 * 1) = 366.6697919933442
p2 = (705.88 * 2.30 * 1 + 539.33 * 3.75 * 0.43 + 294.12 * 3.05 * 0.71 + 67.80 * 3.25 * 0.71) / max_coefficients = 219.96789297658864
score = 366.6697919933442 * 0.5 + 219.96789297658864 * 0.5 = 293.3188424849664
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-04-19 | 185 -> 195 | 293.32 | |
| 2026-04-16 | 190 -> 185 | 287.25 -> 293.32 |
White Wolf Cup: 86% -> 71% |
| 2026-04-13 | 174 -> 190 | 301.78 -> 287.25 |
Moscow Riichi 2024: 57% -> 43% |
| 2026-04-11 | 173 -> 174 | 301.78 | |
| 2026-04-05 | 170 -> 173 | 301.78 | |
| 2026-04-04 | 172 -> 170 | 301.78 | |
| 2026-04-02 | 171 -> 172 | 304.68 -> 301.78 |
Agari Winter Tournament 2025: 86% -> 71% |
| 2026-03-30 | 172 -> 171 | 305.41 -> 304.68 |
Seihoku spring tournament 2024: 14% -> 0% |
| 2026-03-29 | 173 -> 172 | 305.41 | |
| 2026-03-25 | 171 -> 173 | 306.96 -> 305.41 |
Duplicate riichi mahjong tournament 2024: 29% -> 14% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 706 |
|
16/52 | 100% | 2.30 | CRR | "Furin" club tournament: for the anniversary | Moscow | |
| 2 | 68 |
|
56/60 | 71% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 3 | 294 |
|
37/52 | 71% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 4 | 539 |
|
42/90 | 43% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 5 | 474 |
|
11/20 | 14% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow | |
| 6 | 19 |
|
106/108 | 14% | 4.60 | RR | X Russian Championship | Perm | |
| 7 | 413 |
|
28/47 | 0% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 8 | 667 |
|
18/52 | 0% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 9 | 462 |
|
22/40 | 0% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 10 | 318 |
|
16/23 | 0% | 2.10 | CRR | Mushroom League | Moscow | |
| 11 | 421 |
|
63/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 12 | 391 |
|
54/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 13 | 0 |
|
24/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 14 | 427 |
|
44/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 15 | 604 |
|
45/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 16 | 253 |
|
57/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg |