Ryabov Aleksandr
From Moscow, Russia
Internal rating (RR)
Rating date Dec. 19, 2023 (latest changes Dec. 19, 2023).
27 place (490.22).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 4.05 * 0.43) = 13.085650000000001
p1 = (594.59 * 4.05 * 0.43 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 0 + 0) / (4.05 * 0.43 + 3.75 * 1 + 4 * 1 + 1 + 1) = 522.1346650612102
p2 = (831.78 * 4 * 1 + 436.78 * 3.75 * 1 + 594.59 * 4.05 * 0.43) / max_coefficients = 458.29974055549394
score = 522.1346650612102 * 0.5 + 458.29974055549394 * 0.5 = 490.21720280835206
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-12-19 | 28 -> 27 | 490.22 | |
2023-12-12 | 26 -> 28 | 494.84 -> 490.22 |
Moscow Riichi 2022: 57% -> 43% |
2023-11-28 | 27 -> 26 | 494.84 | |
2023-11-20 | 28 -> 27 | 494.84 | |
2023-11-06 | 32 -> 28 | 485.07 -> 494.84 | |
2023-10-12 | 29 -> 32 | 489.58 -> 485.07 |
Moscow Riichi 2022: 71% -> 57% |
2023-09-20 | 31 -> 29 | 489.58 | |
2023-09-03 | 73 -> 31 | 304.86 -> 489.58 |
SPB Riichi Open 2023: 0% -> 100% |
2023-08-19 | 74 -> 73 | 304.86 | |
2023-08-12 | 69 -> 74 | 319.00 -> 304.86 |
Moscow Riichi 2022: 86% -> 71% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 832 |
|
19/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
2 | 437 |
|
50/88 | 100% | 3.75 | RR | Money can not buy tenpai |
3 | 595 |
|
46/112 | 43% | 4.05 | RR | Moscow Riichi 2022 |