Boiko Bogdan

From Kirov, Russia

Player page

Common russian riichi rating (CRR)

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

40 place (604.69).

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

p1 = (214.95 * 4.60 * 0.43 + 191.49 * 2.80 * 0.57 + 113.92 * 3.65 * 0.57 + 736.84 * 1.50 * 1 + 1000 * 3.10 * 1 + 925.37 * 4.10 * 1 + 46.51 * 3 * 1 + 666.67 * 2.90 * 1) / (4.60 * 0.43 + 2.80 * 0.57 + 3.65 * 0.57 + 1.50 * 1 + 3.10 * 1 + 4.10 * 1 + 3 * 1 + 2.90 * 1) = 544.9899269835896

p2 = (925.37 * 4.10 * 1 + 1000 * 3.10 * 1 + 666.67 * 2.90 * 1 + 736.84 * 1.50 * 1) / max_coefficients = 664.3892976588629

score = 544.9899269835896 * 0.5 + 664.3892976588629 * 0.5 = 604.6896123212263

Rating changes

Show

all results
Date Place Points Reason
2025-12-09 41 -> 40 604.69
2025-12-07 56 -> 41 544.04 -> 604.69

Discard League Autumn Season 2025: 0% -> 100%
2025-12-04 61 -> 56 538.05 -> 544.04

Riichi over Volga: 71% -> 57%
2025-11-30 59 -> 61 538.05
2025-11-22 58 -> 59 538.05
2025-11-19 59 -> 58 538.05
2025-11-15 60 -> 59 538.05
2025-11-14 63 -> 60 534.53 -> 538.05

Guardian of the Winds: 71% -> 57%
2025-11-12 65 -> 63 534.21 -> 534.53

X Russian Championship: 57% -> 43%
2025-11-04 61 -> 65 547.23 -> 534.21

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 667 2025-12-07 6/16 100% 2.90 CRR Discard League Autumn Season 2025 Kirov
2 47 2025-08-03 42/44 100% 3.00 RR Two roosters and Chuckles Kirov
3 925 2025-06-15 6/68 100% 4.10 RR 13 bloody tiles Perm
4 1000 2025-01-07 🥇 1/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
5 737 2025-01-04 6/20 100% 1.50 CRR Dirty Riichi Kirov
6 114 2024-08-04 71/80 57% 3.65 RR Riichi over Volga Samara
7 191 2024-07-14 39/48 57% 2.80 RR Guardian of the Winds Yekaterinburg
8 215 2024-05-12 85/108 43% 4.60 RR X Russian Championship Perm