Grishhenko Sergei

From Korolyov, Russia

Player page

Common russian riichi rating (CRR)

Rating date Aug. 31, 2026 (latest changes Aug. 31, 2026).

99 place (480.84).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (473.68 * 1.50 * 0.71 + 66.67 * 2 * 0.71 + 268.66 * 4.10 * 0.71 + 333.33 * 2.45 * 0.86 + 894.74 * 2.25 * 1 + 256.76 * 3.40 * 1 + 901.96 * 2.30 * 1 + 259.26 * 2.45 * 1 + 559.44 * 4.71 * 1 + 444.44 * 2.45 * 1) / (1.50 * 0.71 + 2 * 0.71 + 4.10 * 0.71 + 2.45 * 0.86 + 2.25 * 1 + 3.40 * 1 + 2.30 * 1 + 2.45 * 1 + 4.71 * 1 + 2.45 * 1) = 454.75799243281057

p2 = (559.44 * 4.71 * 1 + 901.96 * 2.30 * 1 + 894.74 * 2.25 * 1 + 444.44 * 2.45 * 1) / max_coefficients = 506.9130434782609

score = 454.75799243281057 * 0.5 + 506.9130434782609 * 0.5 = 480.8355179555357

Rating changes

Show

all results
Date Place Points Reason
2026-08-31 100 -> 99 480.02 -> 480.84
2026-08-16 96 -> 100 480.02
2026-08-15 98 -> 96 476.04 -> 480.02

13 bloody tiles: 86% -> 71%
2026-08-13 97 -> 98 476.04
2026-08-08 98 -> 97 473.93 -> 476.04

Random not fault: 86% -> 71%
2026-08-04 99 -> 98 473.93
2026-08-03 100 -> 99 473.93
2026-08-02 102 -> 100 469.38 -> 473.93

Ivanovo Babayka 2026: 0% -> 100%
2026-07-25 100 -> 102 469.38
2026-07-18 101 -> 100 469.38

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 444 2026-08-02 16/28 100% 2.45 RR Ivanovo Babayka 2026 Ivanovo
2 559 2026-06-14 64/144 100% 4.71 RR XII Russian Championship Samara
3 259 2026-05-17 21/28 100% 2.45 RR Hatiko under the sakura Korolyov
4 902 2026-03-14 6/52 100% 2.30 CRR "Furin" club tournament: for the anniversary Moscow
5 257 2026-02-23 56/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
6 895 2025-12-07 🥉 3/20 100% 2.25 RR Winter Hatiko Korolyov
7 158 2025-11-04 49/58 100% 3.90 RR XI Russian Championship Moscow
8 333 2025-07-13 21/31 86% 2.45 RR Agari Summer Tournament 2025 Moscow
9 269 2025-06-15 50/68 71% 4.10 RR 13 bloody tiles Perm
10 67 2025-06-08 15/16 71% 2.00 RR Random not fault Moscow
11 474 2025-05-17 11/20 71% 1.50 CRR HaTiKo Korolyov