Boiko Bogdan

From Kirov, Russia

Player page

Common russian riichi rating (CRR)

Rating date Nov. 2, 2026 (latest changes Nov. 2, 2026).

100 place (482.54).

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

p1 = (736.84 * 1.50 * 0.29 + 1000 * 3.10 * 0.29 + 925.37 * 4.10 * 0.57 + 46.51 * 3 * 0.71 + 666.67 * 2.90 * 1) / (1.50 * 0.29 + 3.10 * 0.29 + 4.10 * 0.57 + 3 * 0.71 + 2.90 * 1) = 620.9697627318141

p2 = (925.37 * 4.10 * 0.57 + 666.67 * 2.90 * 1 + 1000 * 3.10 * 0.29 + 736.84 * 1.50 * 0.29) / max_coefficients = 344.10642439974043

score = 620.9697627318141 * 0.5 + 344.10642439974043 * 0.5 = 482.5380935657772

Rating changes

Show

all results
Date Place Points Reason
2026-11-02 101 -> 100 482.54
2026-11-01 100 -> 101 482.54
2026-10-31 99 -> 100 482.54
2026-10-27 100 -> 99 482.54
2026-10-17 98 -> 100 482.54
2026-10-15 88 -> 98 509.73 -> 482.54

13 bloody tiles: 71% -> 57%
2026-10-13 89 -> 88 509.73
2026-10-03 95 -> 89 496.64 -> 509.73

Two roosters and Chuckles: 86% -> 71%
2026-09-26 97 -> 95 496.64
2026-09-07 85 -> 97 519.43 -> 496.64

Moscow Open Riichi Marathon: 43% -> 29%

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 71% 3.00 RR Two roosters and Chuckles Kirov
3 925 2025-06-15 6/68 57% 4.10 RR 13 bloody tiles Perm
4 1000 2025-01-07 🥇 1/32 29% 3.10 RR Moscow Open Riichi Marathon Moscow
5 737 2025-01-04 6/20 29% 1.50 CRR Dirty Riichi Kirov
6 114 2024-08-04 71/80 0% 3.65 RR Riichi over Volga Samara
7 191 2024-07-14 39/48 0% 2.80 RR Guardian of the Winds Yekaterinburg
8 215 2024-05-12 85/108 0% 4.60 RR X Russian Championship Perm