Shirshov Alexander
From Saint Petersburg, Russia
EMA: 15990308
Common russian riichi rating (CRR)
Rating date March 31, 2025 (latest changes March 30, 2025).
202 place (200.18).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (565.22 * 1.40 * 0.14 + 782.61 * 2.10 * 0.86 + 0 + 0 + 0) / (1.40 * 0.14 + 2.10 * 0.86 + 1 + 1 + 1) = 304.3438260629564
p2 = (782.61 * 2.10 * 0.86 + 565.22 * 1.40 * 0.14) / max_coefficients = 96.00694006309149
score = 304.3438260629564 * 0.5 + 96.00694006309149 * 0.5 = 200.17538306302396
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-03-30 | 197 -> 202 | 221.12 -> 200.18 |
Seihoku spring tournament 2024: 100% -> 86% |
| 2025-03-29 | 195 -> 197 | 221.12 | |
| 2025-03-23 | 189 -> 195 | 221.12 | |
| 2025-03-03 | 190 -> 189 | 221.12 | |
| 2025-03-02 | 187 -> 190 | 221.12 | |
| 2025-02-25 | 157 -> 187 | 275.09 -> 221.12 |
Earth cup: 14% -> 0% |
| 2025-02-22 | 154 -> 157 | 281.55 -> 275.09 |
Fire cup 2023: 29% -> 14% |
| 2025-02-16 | 147 -> 154 | 281.55 | |
| 2025-02-11 | 151 -> 147 | 281.55 | |
| 2025-02-02 | 144 -> 151 | 281.55 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 783 |
|
11/47 | 86% | 2.10 | RR | Seihoku spring tournament 2024 |
| 2 | 565 |
|
11/24 | 14% | 1.40 | CRR | Fire cup 2023 |
| 3 | 742 |
|
9/32 | 0% | 1.80 | CRR | Earth cup |
| 4 | 923 |
|
4/40 | 0% | 1.80 | CRR | Sun tournament |
| 5 | 947 |
|
5/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 |
| 6 | 317 |
|
44/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 |
| 7 | 308 |
|
28/40 | 0% | 2.90 | RR | Summer Cup 2019 |
| 8 | 872 |
|
6/40 | 0% | 2.90 | RR | North Cup 2018 |
| 9 | 957 |
|
2/24 | 0% | 2.50 | RR | West cup 2018 |
| 10 | 676 |
|
24/72 | 0% | 3.55 | EMA | RCR Saint Petersburg South Cup 2018 |
| 11 | 613 |
|
13/32 | 0% | 2.70 | RR | East Cup 2018 |
| 12 | 554 |
|
38/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 |
| 13 | 873 |
|
9/64 | 0% | 3.45 | EMA | Moscow Riichi Open 2017 |
| 14 | 615 |
|
16/40 | 0% | 1.80 | RR | Saint Petersburg championship. Northern cup 2017 |
| 15 | 513 |
|
20/40 | 0% | 1.80 | RR | Saint Petersburg championship. West cup 2017 |
| 16 | 186 |
|
36/44 | 0% | 1.90 | RR | Saint Petersburg championship. South cup 2017 |
| 17 | 127 |
|
63/72 | 0% | 3.25 | EMA | Saint Petersburg Riichi Open 2016 |
| 18 | 323 |
|
22/32 | 0% | 1.60 | RR | Tournament of 4 winds. West cup 2016 |