Ryabov Aleksandr
From Moscow, Russia
Internal rating (RR)
Rating date Sept. 20, 2023 (latest changes Sept. 20, 2023).
29 place (489.58).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915
p1 = (594.59 * 4.05 * 0.71 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 0 + 0) / (4.05 * 0.71 + 3.75 * 1 + 4 * 1 + 1 + 1) = 528.7657158179106
p2 = (831.78 * 4 * 1 + 594.59 * 4.05 * 0.71 + 436.78 * 3.75 * 1) / max_coefficients = 450.3926620882758
score = 528.7657158179106 * 0.5 + 450.3926620882758 * 0.5 = 489.5791889530932
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
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% |
2023-07-28 | 72 -> 69 | 319.00 | |
2023-07-20 | 72 | 314.05 -> 319.00 | |
2023-07-06 | 74 -> 72 | 314.05 | |
2023-06-19 | 75 -> 74 | 314.05 | |
2023-06-12 | 73 -> 75 | 326.83 -> 314.05 |
Moscow Riichi 2022: 100% -> 86% |
2023-06-11 | 73 | 326.83 |
Money can not buy tenpai: 0% -> 100% |
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 | 71% | 4.05 | RR | Moscow Riichi 2022 |