Grishhenko Sergei

From Korolyov, Russia

Player page

Common russian riichi rating (CRR)

Rating date Oct. 31, 2025 (latest changes Oct. 27, 2025).

198 place (221.22).

max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835

p1 = (473.68 * 1.50 * 1 + 66.67 * 2 * 1 + 268.66 * 4.10 * 1 + 333.33 * 2.45 * 1 + 0) / (1.50 * 1 + 2 * 1 + 4.10 * 1 + 2.45 * 1 + 1) = 249.95656108597282

p2 = (268.66 * 4.10 * 1 + 333.33 * 2.45 * 1 + 473.68 * 1.50 * 1 + 66.67 * 2 * 1) / max_coefficients = 192.47747447967168

score = 249.95656108597282 * 0.5 + 192.47747447967168 * 0.5 = 221.21701778282227

Rating changes

Show

all results
Date Place Points Reason
2025-10-22 199 -> 198 221.22
2025-10-13 199 218.29 -> 221.22
2025-10-04 201 -> 199 218.29
2025-09-30 204 -> 201 218.29
2025-09-26 205 -> 204 218.29
2025-09-25 206 -> 205 218.29
2025-09-10 205 -> 206 218.29
2025-09-03 210 -> 205 218.29
2025-09-01 212 -> 210 215.83 -> 218.29
2025-08-31 210 -> 212 215.83

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 333 2025-07-13 21/31 100% 2.45 RR Agari Summer Tournament 2025 Moscow
2 269 2025-06-15 50/68 100% 4.10 RR 13 bloody tiles Perm
3 67 2025-06-08 15/16 100% 2.00 RR Random not fault Moscow
4 474 2025-05-17 11/20 100% 1.50 CRR HaTiKo Korolyov