Lavreniuk Irina
From Moscow, Russia
EMA: 15990327
Common russian riichi rating (CRR)
Rating date May 22, 2026 (latest changes May 19, 2026).
140 place (358.66).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (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 + 518.52 * 2.45 * 1) / (1.50 * 0.14 + 3.75 * 0.43 + 3.05 * 0.71 + 3.25 * 0.71 + 2.30 * 1 + 2.45 * 1) = 420.93122188211555
p2 = (705.88 * 2.30 * 1 + 518.52 * 2.45 * 1 + 539.33 * 3.75 * 0.43 + 294.12 * 3.05 * 0.71) / max_coefficients = 296.3973063973064
score = 420.93122188211555 * 0.5 + 296.3973063973064 * 0.5 = 358.664264139711
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-19 | 142 -> 140 | 358.66 | |
| 2026-05-17 | 174 -> 142 | 307.32 -> 358.66 |
Hatiko under the sakura: 0% -> 100% |
| 2026-05-15 | 175 -> 174 | 307.32 | |
| 2026-05-12 | 195 -> 175 | 294.06 -> 307.32 |
X Russian Championship: 14% -> 0% |
| 2026-05-11 | 193 -> 195 | 294.06 | |
| 2026-05-05 | 194 -> 193 | 294.06 | |
| 2026-05-03 | 192 -> 194 | 293.32 -> 294.06 | |
| 2026-05-02 | 193 -> 192 | 293.32 | |
| 2026-05-01 | 194 -> 193 | 293.32 | |
| 2026-04-19 | 184 -> 194 | 293.32 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 519 |
|
14/28 | 100% | 2.45 | RR | Hatiko under the sakura | Korolyov | |
| 2 | 706 |
|
16/52 | 100% | 2.30 | CRR | "Furin" club tournament: for the anniversary | Moscow | |
| 3 | 68 |
|
56/60 | 71% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 4 | 294 |
|
37/52 | 71% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 5 | 539 |
|
42/90 | 43% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 6 | 474 |
|
11/20 | 14% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow | |
| 7 | 19 |
|
106/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 8 | 413 |
|
28/47 | 0% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 9 | 667 |
|
18/52 | 0% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow | |
| 10 | 462 |
|
22/40 | 0% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 11 | 318 |
|
16/23 | 0% | 2.10 | CRR | Mushroom League | Moscow | |
| 12 | 421 |
|
63/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 13 | 391 |
|
54/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 14 | 0 |
|
24/24 | 0% | 2.80 | CRR | Meeting in the billiard room | Moscow | |
| 15 | 427 |
|
44/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 16 | 604 |
|
45/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 17 | 253 |
|
57/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg |