Kim Sofiya
From Novosibirsk, Russia
EMA: 15020096
Internal rating (RR)
Rating date Sept. 2, 2026 (latest changes Sept. 2, 2026).
81 place (488.11).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (967.74 * 2.40 * 0.43 + 805.97 * 4.10 * 0.71 + 532.47 * 3.45 * 0.86 + 193.55 * 3 * 1 + 257.14 * 2.50 * 1 + 538.46 * 4.71 * 1 + 612.90 * 2.40 * 1 + 118.64 * 3.40 * 1) / (2.40 * 0.43 + 4.10 * 0.71 + 3.45 * 0.86 + 3 * 1 + 2.50 * 1 + 4.71 * 1 + 2.40 * 1 + 3.40 * 1) = 460.8378938212414
p2 = (538.46 * 4.71 * 1 + 805.97 * 4.10 * 0.71 + 532.47 * 3.45 * 0.86 + 612.90 * 2.40 * 1) / max_coefficients = 515.380272550292
score = 460.8378938212414 * 0.5 + 515.380272550292 * 0.5 = 488.10908318576674
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-02 | 81 | 491.84 -> 488.11 |
Riichi Maslenitsa (shrovetide): 57% -> 43% |
| 2026-09-01 | 81 | 494.46 -> 491.84 |
SPB Riichi Open 2024: 14% -> 0% |
| 2026-08-31 | 79 -> 81 | 502.71 -> 494.46 |
SPB Riichi Open 2025: 100% -> 86% |
| 2026-08-16 | 66 -> 79 | 531.66 -> 502.71 |
Ufa Championship 2026: 0% -> 100% |
| 2026-08-15 | 61 -> 66 | 548.59 -> 531.66 |
13 bloody tiles: 86% -> 71% |
| 2026-08-13 | 62 -> 61 | 548.59 | |
| 2026-08-04 | 64 -> 62 | 549.99 -> 548.59 |
Riichi over Volga: 14% -> 0% |
| 2026-08-02 | 63 -> 64 | 549.99 | |
| 2026-07-25 | 62 -> 63 | 549.99 | |
| 2026-07-14 | 55 -> 62 | 578.40 -> 549.99 |
Guardian of the Winds: 14% -> 0% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 119 |
|
53/60 | 100% | 3.40 | RR | Ufa Championship 2026 | Ufa | |
| 2 | 613 |
|
13/32 | 100% | 2.40 | RR | Poplar fluff. Mahjong. July. | Yekaterinburg | |
| 3 | 538 |
|
67/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 4 | 257 |
|
27/36 | 100% | 2.50 | RR | One tsumo until spring | Yekaterinburg | |
| 5 | 194 |
|
26/32 | 100% | 3.00 | RR | Final Cup 2025 | Moscow | |
| 6 | 532 |
|
37/78 | 86% | 3.45 | RR | SPB Riichi Open 2025 | Saint Petersburg | |
| 7 | 806 |
|
14/68 | 71% | 4.10 | RR | 13 bloody tiles | Perm | |
| 8 | 968 |
|
🥈 | 2/32 | 43% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg |
| 9 | 695 |
|
30/96 | 0% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 10 | 658 |
|
28/80 | 0% | 3.65 | RR | Riichi over Volga | Samara | |
| 11 | 681 |
|
16/48 | 0% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 12 | 196 |
|
87/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 13 | 234 |
|
83/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 14 | 218 |
|
69/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 15 | 91 |
|
61/67 | 0% | 3.45 | RR | Tenpai can't buy happiness | Perm | |
| 16 | 211 |
|
16/20 | 0% | 2.10 | EMA | Snow Dragon Tournament | Novosibirsk | |
| 17 | 794 |
|
14/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm | |
| 18 | 880 |
|
11/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
| 19 | 109 |
|
50/56 | 0% | 3.00 | EMA | Snow Dragon | Novosibirsk | |
| 20 | 143 |
|
79/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm | |
| 21 | 174 |
|
20/24 | 0% | 2.20 | RR | Siberian riichi | Novosibirsk | |
| 22 | 1000 |
|
🥇 | 1/32 | 0% | 2.20 | RR | Russian riichi championship by JPML-B rules | Novosibirsk |
| 23 | 371 |
|
23/36 | 0% | 2.50 | RR | Quick discard 2017 | Novosibirsk | |
| 24 | 907 |
|
5/44 | 0% | 1.90 | RR | Eighth winter tournament | Novosibirsk | |
| 25 | 714 |
|
11/36 | 0% | 1.70 | RR | Seventh winter tournament | Novosibirsk |