Ryabov Aleksandr

From Moscow, Russia

Player page

Common russian riichi rating (CRR)

Rating date Oct. 21, 2023 (latest changes Oct. 21, 2023).

32 place (511.77).

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

p1 = (594.59 * 4.05 * 0.57 + 436.78 * 3.75 * 1 + 831.78 * 4 * 1 + 347.83 * 2.80 * 1 + 0) / (4.05 * 0.57 + 3.75 * 1 + 4 * 1 + 2.80 * 1 + 1) = 527.6139862682006

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 = 527.6139862682006 * 0.5 + 495.9274576271186 * 0.5 = 511.7707219476596

Rating changes

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all results
Date Place Points Reason
2023-10-12 30 -> 32 523.15 -> 511.77

Moscow Riichi 2022: 71% -> 57%
2023-09-20 33 -> 30 523.15
2023-09-06 31 -> 33 523.15
2023-09-03 73 -> 31 348.05 -> 523.15

SPB Riichi Open 2023: 0% -> 100%
2023-09-01 73 348.05

Tournaments

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