Ryabov Aleksandr
From Moscow, Russia
Internal rating (RR)
Rating date Feb. 22, 2025 (latest changes Feb. 16, 2025).
35 place (611.49).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (436.78 * 3.75 * 0.29 + 831.78 * 4 * 0.57 + 352.94 * 3.05 * 1 + 925.23 * 4.60 * 1 + 221.05 * 3.85 * 1 + 853.93 * 3.75 * 1 + 161.29 * 3.10 * 1) / (3.75 * 0.29 + 4 * 0.57 + 3.05 * 1 + 4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1) = 564.5609303000533
p2 = (925.23 * 4.60 * 1 + 853.93 * 3.75 * 1 + 831.78 * 4 * 0.57 + 352.94 * 3.05 * 1) / max_coefficients = 658.4164037854889
score = 564.5609303000533 * 0.5 + 658.4164037854889 * 0.5 = 611.4886670427711
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-16 | 33 -> 35 | 611.49 | |
| 2025-02-11 | 33 | 609.95 -> 611.49 |
Money can not buy tenpai: 43% -> 29% |
| 2025-02-02 | 31 -> 33 | 609.95 | |
| 2025-01-26 | 26 -> 31 | 609.95 | |
| 2025-01-07 | 22 -> 26 | 642.35 -> 609.95 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 2025-01-03 | 18 -> 22 | 660.33 -> 642.35 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-11 | 20 -> 18 | 657.75 -> 660.33 |
Money can not buy tenpai: 57% -> 43% |
| 2024-11-06 | 21 -> 20 | 657.75 | |
| 2024-11-03 | 19 -> 21 | 675.54 -> 657.75 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-13 | 32 -> 19 | 585.71 -> 675.54 |
Moscow Riichi 2024: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 161 |
|
27/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon |
| 2 | 854 |
|
14/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 3 | 221 |
|
75/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 4 | 925 |
|
9/108 | 100% | 4.60 | RR | X Russian Championship |
| 5 | 353 |
|
34/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 |
| 6 | 832 |
|
19/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 |
| 7 | 437 |
|
50/88 | 29% | 3.75 | RR | Money can not buy tenpai |
| 8 | 595 |
|
46/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |