Ivanov Grigorii

From Korolyov, Russia

Player page

Common russian riichi rating (CRR)

Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).

139 place (344.85).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (368.42 * 1.50 * 1 + 561.40 * 3.90 * 1 + 578.95 * 2.25 * 1 + 0 + 0) / (1.50 * 1 + 3.90 * 1 + 2.25 * 1 + 1 + 1) = 419.1430051813471

p2 = (561.40 * 3.90 * 1 + 578.95 * 2.25 * 1 + 368.42 * 1.50 * 1) / max_coefficients = 270.55050167224084

score = 419.1430051813471 * 0.5 + 270.55050167224084 * 0.5 = 344.84675342679395

Rating changes

Show

all results
Date Place Points Reason
2025-12-07 195 -> 139 254.93 -> 344.85

Winter Hatiko: 0% -> 100%
2025-12-06 191 -> 195 254.93
2025-11-22 189 -> 191 254.93
2025-11-15 190 -> 189 254.93
2025-11-10 191 -> 190 254.93
2025-11-05 192 -> 191 254.93
2025-11-04 192 254.93

XI Russian Championship: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 579 2025-12-07 9/20 100% 2.25 RR Winter Hatiko Korolyov
2 561 2025-11-04 26/58 100% 3.90 RR XI Russian Championship Moscow
3 368 2025-05-17 13/20 100% 1.50 CRR HaTiKo Korolyov