Ryabov Aleksandr

From Moscow, Russia

Player page

Common russian riichi rating (CRR)

Rating date Oct. 20, 2023 (latest changes Oct. 20, 2023).

34 place (511.77).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 2.80 * 1) = 14.75

p1 = (347.83 * 2.80 * 1 + 594.59 * 4.05 * 0.57 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 0) / (2.80 * 1 + 4.05 * 0.57 + 3.75 * 1 + 4 * 1 + 1) = 527.6139862682007

p2 = (831.78 * 4 * 1 + 436.78 * 3.75 * 1 + 594.59 * 4.05 * 0.57 + 347.83 * 2.80 * 1) / max_coefficients = 495.9274576271186

score = 527.6139862682007 * 0.5 + 495.9274576271186 * 0.5 = 511.7707219476597

Rating changes

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all results
Date Place Points Reason
2023-10-12 32 -> 34 523.15 -> 511.77

Moscow Riichi 2022: 71% -> 57%
2023-09-20 35 -> 32 523.15
2023-09-06 33 -> 35 523.15
2023-09-03 74 -> 33 348.05 -> 523.15

SPB Riichi Open 2023: 0% -> 100%
2023-08-19 76 -> 74 348.05
2023-08-12 73 -> 76 358.88 -> 348.05

Moscow Riichi 2022: 86% -> 71%
2023-07-28 74 -> 73 358.88
2023-07-20 77 -> 74 358.88
2023-07-05 78 -> 77 358.88
2023-06-12 73 -> 78 368.80 -> 358.88

Moscow Riichi 2022: 100% -> 86%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 832 2023-09-03 19/108 100% 4.00 RR SPB Riichi Open 2023
2 437 2023-06-11 50/88 100% 3.75 RR Money can not buy tenpai
3 348 2022-12-18 16/24 100% 2.80 CRR Meeting in the billiard room
4 595 2022-06-12 46/112 57% 4.05 RR Moscow Riichi 2022