Grishchenko Aleksandra
From Korolyov, Russia
Internal rating (RR)
Rating date Sept. 16, 2026 (latest changes Sept. 13, 2026).
26 place (679.45).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (797.75 * 3.75 * 0.14 + 214.29 * 2.60 * 0.43 + 470.59 * 3.05 * 0.43 + 796.61 * 3.25 * 0.43 + 400 * 2 * 0.71 + 600 * 2.45 * 0.71 + 1000 * 3 * 0.86 + 596.49 * 3.90 * 1 + 774.19 * 3 * 1 + 526.32 * 2.25 * 1 + 700 * 3 * 1 + 702.70 * 3.40 * 1 + 814.81 * 2.45 * 1 + 666.67 * 2.45 * 1 + 881.36 * 3.40 * 1 + 676.06 * 3.40 * 1) / (3.75 * 0.14 + 2.60 * 0.43 + 3.05 * 0.43 + 3.25 * 0.43 + 2 * 0.71 + 2.45 * 0.71 + 3 * 0.86 + 3.90 * 1 + 3 * 1 + 2.25 * 1 + 3 * 1 + 3.40 * 1 + 2.45 * 1 + 2.45 * 1 + 3.40 * 1 + 3.40 * 1) = 691.5862903560476
p2 = (881.36 * 3.40 * 1 + 1000 * 3 * 0.86 + 702.70 * 3.40 * 1 + 596.49 * 3.90 * 1) / max_coefficients = 667.3212199870214
score = 691.5862903560476 * 0.5 + 667.3212199870214 * 0.5 = 679.4537551715346
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-13 | 26 | 679.03 -> 679.45 |
Agari Summer Tournament 2025: 86% -> 71% |
| 2026-09-06 | 23 -> 26 | 679.76 -> 679.03 |
Sunset Wolf Cup 2026: 0% -> 100% |
| 2026-09-03 | 24 -> 23 | 679.76 | |
| 2026-09-01 | 24 | 678.61 -> 679.76 |
SPB Riichi Open 2024: 14% -> 0% |
| 2026-08-31 | 25 -> 24 | 677.53 -> 678.61 | |
| 2026-08-16 | 33 -> 25 | 646.31 -> 677.53 |
White Wolf Cup: 57% -> 43% Ufa Championship 2026: 0% -> 100% |
| 2026-08-15 | 33 | 644.04 -> 646.31 |
13 bloody tiles: 86% -> 71% |
| 2026-08-13 | 33 | 645.08 -> 644.04 |
Moscow Riichi 2024: 29% -> 14% |
| 2026-08-08 | 33 | 643.89 -> 645.08 |
Random not fault: 86% -> 71% |
| 2026-08-03 | 27 -> 33 | 659.78 -> 643.89 |
Two roosters and Chuckles: 100% -> 86% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 676 |
|
24/72 | 100% | 3.40 | RR | Sunset Wolf Cup 2026 | Saint Petersburg | |
| 2 | 881 |
|
8/60 | 100% | 3.40 | RR | Ufa Championship 2026 | Ufa | |
| 3 | 667 |
|
10/28 | 100% | 2.45 | RR | Ivanovo Babayka 2026 | Ivanovo | |
| 4 | 476 |
|
76/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 5 | 815 |
|
6/28 | 100% | 2.45 | RR | Hatiko under the sakura | Korolyov | |
| 6 | 703 |
|
23/75 | 100% | 3.40 | RR | White Wolf Cup 2026 | Saint Petersburg | |
| 7 | 700 |
|
10/31 | 100% | 3.00 | RR | Moscow Open Riichi Marathon 2026 | Moscow | |
| 8 | 526 |
|
10/20 | 100% | 2.25 | RR | Winter Hatiko | Korolyov | |
| 9 | 774 |
|
8/32 | 100% | 3.00 | RR | Final Cup 2025 | Moscow | |
| 10 | 596 |
|
24/58 | 100% | 3.90 | RR | XI Russian Championship | Moscow | |
| 11 | 1000 |
|
🥇 | 1/44 | 86% | 3.00 | RR | Two roosters and Chuckles | Kirov |
| 12 | 600 |
|
13/31 | 71% | 2.45 | RR | Agari Summer Tournament 2025 | Moscow | |
| 13 | 418 |
|
40/68 | 71% | 4.10 | RR | 13 bloody tiles | Perm | |
| 14 | 400 |
|
10/16 | 71% | 2.00 | RR | Random not fault | Moscow | |
| 15 | 797 |
|
13/60 | 43% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 16 | 471 |
|
28/52 | 43% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 17 | 214 |
|
34/43 | 43% | 2.60 | RR | Riichi On Ice | Samara | |
| 18 | 798 |
|
19/90 | 14% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 19 | 547 |
|
44/96 | 0% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 20 | 822 |
|
20/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 21 | 326 |
|
32/47 | 0% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 22 | 549 |
|
24/52 | 0% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |