Ratnikova Anna

From Samara, Russia

Internal rating (RR)

Rating date May 3, 2025 (latest changes May 3, 2025).

18 place (696.30).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85

p1 = (551.72 * 3.75 * 0.14 + 439.25 * 4 * 0.29 + 644.86 * 4.60 * 1 + 329.11 * 3.65 * 1 + 821.05 * 3.85 * 1 + 833.33 * 2.60 * 1 + 885.71 * 3.50 * 1) / (3.75 * 0.14 + 4 * 0.29 + 4.60 * 1 + 3.65 * 1 + 3.85 * 1 + 2.60 * 1 + 3.50 * 1) = 673.7365543729651

p2 = (821.05 * 3.85 * 1 + 885.71 * 3.50 * 1 + 644.86 * 4.60 * 1 + 833.33 * 2.60 * 1) / max_coefficients = 718.8694006309148

score = 673.7365543729651 * 0.5 + 718.8694006309148 * 0.5 = 696.30297750194

Rating changes

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all results

Date	Place	Points	Reason
2025-05-03	33 -> 18	610.57 -> 696.30	SPB Riichi Open 2023: 43% -> 29% Riichi over The Volga 2025: 0% -> 100%
2025-04-11	33	609.49 -> 610.57	Money can not buy tenpai: 29% -> 14%
2025-03-03	35 -> 33	606.63 -> 609.49	SPB Riichi Open 2023: 57% -> 43%
2025-03-02	36 -> 35	606.63
2025-02-16	35 -> 36	606.63
2025-02-11	35	605.73 -> 606.63	Money can not buy tenpai: 43% -> 29%
2025-02-02	32 -> 35	605.73
2025-01-26	41 -> 32	551.09 -> 605.73	Riichi On Ice: 0% -> 100%
2025-01-07	39 -> 41	551.09
2025-01-03	40 -> 39	556.65 -> 551.09	SPB Riichi Open 2023: 71% -> 57%

Tournaments

#	Base rank	Date	Place	Power	Coefficient	Type	Tournament	City
1	886	2025-05-03	9/71	100%	3.50	RR	Riichi over The Volga 2025	Samara
2	833	2025-01-26	8/43	100%	2.60	RR	Riichi On Ice	Samara
3	821	2024-09-01	18/96	100%	3.85	RR	SPB Riichi Open 2024	Saint Petersburg
4	329	2024-08-04	54/80	100%	3.65	RR	Riichi over Volga	Samara
5	645	2024-05-12	39/108	100%	4.60	RR	X Russian Championship	Perm
6	439	2023-09-03	61/108	29%	4.00	RR	SPB Riichi Open 2023	Saint Petersburg
7	552	2023-06-11	40/88	14%	3.75	RR	Money can not buy tenpai	Perm
8	600	2022-11-06	31/76	0%	4.20	RR	IX Russian Riichi Championship	Perm
9	586	2022-06-12	47/112	0%	4.05	RR	Moscow Riichi 2022	Moscow
10	198	2018-11-18	74/92	0%	3.80	EMA	VII Russian Riichi Championship "Aki Shanten"	Perm