Gidrostroy Cup 2025

SwissStandard

58 players participated in this 9-round tournament, held from 29 Jul 2025 to 06 Aug 2025 in Yuzhno-Sakhalinsk, Russia. 13 titled players from 2 federations. Top 10 Elo average was 2375, and top seed was Vadim Zvjaginsev (🇷🇺 RUS, GM, 2540).

Maxim Timoshin ( FID, FM, 2379) won with 7.0/9, ahead of Erik Obgolts (7.0) and Vadim Zvjaginsev (6.5). Timoshin shared the lead from round 2, winning on tie-break.

The biggest upset came in round 3: Daniil Kaminskii (CM, 1801) beat Roman Ovetchkin (GM, 2472), a +671-point gap.

Location

🇷🇺Yuzhno-Sakhalinsk, Russia

Dates

29 Jul 2025 → 06 Aug 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇷🇺GMVadim Zvjaginsev2540

Avg top 10

2,375

Participants

Titled players · 13

GM×4

IM×2

FM×3

CM×2

WFM×2

Federations · 2 represented

🇷🇺Russia×52

FIDE (no federation)×6

Top 3

🥇
FMMaxim Timoshin
FID·2379
7.0pts·2415perf+6.9
🥈
IMErik Obgolts
🇷🇺RUS·2353
7.0pts·2398perf+8.3
🥉
GMVadim Zvjaginsev
🇷🇺RUS·2540
6.5pts·2424perf-8.6

How it unfolded

Top 6 · 9 rounds

Tight race until R9; 2 players tied at 7.0/9, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders

Obgolts7Timoshin7Zvjaginsev6.5Moskalenko6.5Tsydypov6.5Chyndygyr6.5

R9 · TIEBREAK CLUSTER

2 players finish on 7.0/9. Timoshin takes the title on Buchholz Cut1 (49.0).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

IM Erik Obgolts lost to FM Maxim Timoshin (Black).

WIN STREAKS · 2 top finishers

IM Erik Obgolts 4 wins (R1–R4)FM Maxim Timoshin 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1IMErik Obgolts	*	0	½	—
2FMMaxim Timoshin	1	*	0	½
3GMVadim Zvjaginsev	½	1	*	½
4GMAlexander Moskalenko	—	½	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Timoshin, MaximFM	2379	FID	+13B	+8N	+27B	+15N	+2B	−3N	+10B	=5N	=4B	7.0	49.0	53.5	40.50	2415	+6.9
2	Obgolts, ErikIM	2353	RUS	+37N	+42B	+29N	+10B	−1N	+4B	=3B	=6N	+7N	7.0	46.5	50.0	36.50	2398	+8.3
3	Zvjaginsev, VadimGM	2540	RUS	+40N	+26B	=4N	+21B	=11N	+1B	=2N	=7B	=5B	6.5	48.5	52.5	36.75	2424	-8.6
4	Chyndygyr, TamerlanFM	2231	FID	+39N	+34B	=3B	+5N	=15B	−2N	+27B	+10N	=1N	6.5	46.5	50.5	34.00	2371	+17.6
5	Moskalenko, AlexanderGM	2422	RUS	+36B	=16N	+14B	−4B	+30N	+12B	+21N	=1B	=3N	6.5	46.0	50.0	34.00	2308	-6.7
6	Tsydypov, ZhamsaranGM	2514	RUS	+20B	−12N	+28B	+22N	+27B	−10B	+23N	=2B	+19N	6.5	43.5	48.0	33.50	2349	-12.0
7	Mutovin, Egor	2065	RUS	−28B	=33N	+49B	+43N	+8B	+11B	+29N	=3N	−2B	6.0	42.0	45.0	28.00	2160	+21.8
8	Darmaeva, NominaWFM	1974	FID	+56N	−1B	+45N	=24B	−7N	+39N	+15B	+21B	=9B	6.0	42.0	44.0	25.50	2098	+58.5
9	Tikhonovetskiy, Andrey	2012	RUS	−41B	+48N	=13B	=35N	+20B	+14N	=19B	+17B	=8N	6.0	41.0	44.5	30.50	2039	+16.4
10	Chernyaev, Vladislav	1946	RUS	+45N	+32B	+11B	−2N	+14B	+6N	−1N	−4B	=16N	5.5	48.0	51.5	28.25	2192	+100.4
11	Sutormin, DanilaIM	2381	RUS	+30N	+22B	−10N	+16B	=3B	−7N	=18B	+34N	=14B	5.5	44.0	48.0	27.75	2148	-20.2
12	Fisher, TimofeyCM	1938	FID	+50N	+6B	−15N	+25B	=18B	−5N	=13B	+36N	=20B	5.5	44.0	47.0	26.75	2061	+50.4
13	Makarov, Egor Den	1797	RUS	−1N	+56B	=9N	+31B	=24N	=17B	=12N	+22B	=18B	5.5	44.0	46.0	25.25	2046	+111.6
14	Morin, Andrey	1938	RUS	+57N	+24B	−5N	+17B	−10N	−9B	+30N	+23B	=11N	5.5	43.5	44.5	23.75	2142	+38.8
15	Postnikov, ArtemFM	2222	RUS	+43B	+46N	+12B	−1B	=4N	−21B	−8N	+31N	+29B	5.5	42.5	46.0	24.75	2081	-25.2
16	Vorokov, Veniamin	1906	RUS	+51N	=5B	=18B	−11N	+36B	−23N	+38B	+27N	=10B	5.5	40.5	43.5	24.25	2048	+66.8
17	Simbelov, Roman T.	2234	RUS	=35B	=23N	+20B	−14N	+46B	=13N	+34B	−9N	+28B	5.5	40.0	43.5	24.75	2010	-83.2
18	Nedelko, Nikita	1978	RUS	=31N	+49B	=16N	+34B	=12N	−29B	=11N	+25B	=13N	5.5	40.0	43.0	25.25	2023	+9.2
19	Ovetchkin, RomanGM	2472	RUS	−25N	+44B	−30N	+41B	+32N	+22B	=9N	+29B	−6B	5.5	39.5	43.0	24.00	2201	-23.0
20	Asedulov, Vsevolod	1753	RUS	−6N	+50B	−17N	+44B	−9N	+45B	+37N	+24B	=12N	5.5	39.5	42.5	21.75	2002	+108.4
21	Khusnulgatin, Artem	1934	RUS	+33B	=28N	+35B	−3N	+38B	+15N	−5B	−8N	=26B	5.0	42.5	46.5	22.75	1994	+10.6
22	Komissarova, SoiginaWFM	2075	RUS	+53B	−11N	+39B	−6B	+25N	−19N	+35B	−13N	+37B	5.0	40.0	43.0	20.00	2040	-14.4
23	Zhambalov, Bator	2138	RUS	=49N	=17B	−25N	+45B	+40N	+16B	−6B	−14N	+36B	5.0	39.5	42.5	21.25	2006	-54.0
24	Paretskiy, Mikhail	1983	RUS	+38B	−14N	+36B	=8N	=13B	−34N	+28B	−20N	+35B	5.0	39.0	43.0	22.25	1878	-44.8
25	Dunaev, Dmitriy	1815	RUS	+19B	−27N	+23B	−12N	−22B	+47N	+41B	−18N	+34B	5.0	38.5	42.0	21.50	2034	+95.6
26	Tikhomirov, Andrey	1856	RUS	+47B	−3N	=43B	−28N	−37N	+54B	+48N	+42B	=21N	5.0	34.0	36.5	17.25	1849	-1.6
27	Gabrusev, Sergey	2054	RUS	+44N	+25B	−1N	+32B	−6N	+37B	−4N	−16B	=30N	4.5	43.5	47.0	19.25	2008	-12.6
28	Botvenkin, David	1855	RUS	+7N	=21B	−6N	+26B	−29N	+42B	−24N	+32B	−17N	4.5	42.0	45.5	21.50	2016	+68.4
29	Den, Dmitrij	2006	RUS	+48N	+41B	−2B	=38N	+28B	+18N	−7B	−19N	−15N	4.5	41.5	45.0	19.00	1990	-3.0
30	Kaminskii, DaniilCM	1801	FID	−11B	+53N	+19B	=46N	−5B	=41N	−14B	+38N	=27B	4.5	38.5	41.5	18.25	1934	+51.6
31	Budaeva, Victoria	1820	RUS	=18B	−35N	+33B	−13N	−41N	+50B	+40N	−15B	+44N	4.5	36.0	39.0	17.75	1847	+8.8
32	Shimanskaia, Tatiana	1850	FID	+55B	−10N	+52B	−27N	−19B	=38N	+39B	−28N	+47B	4.5	34.5	37.0	15.00	1846	-5.2
33	Sin, Albert	1680	RUS	−21N	=7B	−31N	F	−51N	+55B	+52B	+46N	+43B	4.5	31.5	34.0	15.50	1831	+60.4
34	Kadyrov, Akylbek	2023	RUS	+54B	−4N	+47B	−18N	+35B	+24B	−17N	−11B	−25N	4.0	40.5	43.0	15.00	1916	-22.6
35	Nefedova, Mariia	1694	RUS	=17N	+31B	−21N	=9B	−34N	+40B	−22N	+51B	−24N	4.0	39.0	42.0	17.25	1878	+73.6
36	Kaminskii, Ilia	1864	RUS	−5N	+51B	−24N	+48B	−16N	+44B	+49N	−12B	−23N	4.0	37.5	40.5	13.00	1840	-10.0
37	Andreev, Andrey	1759	RUS	−2B	−52N	+56B	+53N	+26B	−27N	−20B	+41N	−22N	4.0	36.5	38.5	13.50	1765	-1.6
38	Kosterin, Maksim	1615	RUS	−24N	+57B	+42N	=29B	−21N	=32B	−16N	−30B	+50N	4.0	35.5	36.5	12.00	1808	+62.8
39	I, En Bok	1903	RUS	−4B	+54N	−22N	+50B	=42N	−8B	−32N	+48B	=49N	4.0	35.0	37.5	12.25	1809	-19.4
40	Polyakov, Barat	1855	RUS	−3B	−47N	+51B	+52N	−23B	−35N	−31B	+56N	+53B	4.0	32.5	34.5	11.00	1695	-70.0
41	Kravtsov, Dmitriy	1811	RUS	+9N	−29N	=46B	−19N	+31B	=30B	−25N	−37B	=42N	3.5	37.5	41.0	16.25	1841	+4.0
42	I, Gi Su	1959	RUS	+52B	−2N	−38B	+47N	=39B	−28N	=43B	−26N	=41B	3.5	35.0	38.0	12.00	1749	-49.4
43	Dzhafarova, Dinara	1797	RUS	−15N	+58B	=26N	−7B	=49N	=48B	=42N	=44B	−33N	3.5	34.5	34.5	9.25	1770	-9.8
44	Frizuk, Andrey	1875	RUS	−27B	−19N	+54B	−20N	+52B	−36N	+53B	=43N	−31B	3.5	33.5	36.0	10.25	1709	-38.2
45	Kruglova, Marina	1697	RUS	−10B	+55N	−8B	−23N	+53B	−20N	−51N	=50B	+57B	3.5	33.5	34.5	8.00	1631	-34.4
46	Bekasov, Ivan	1904	RUS	+58N	−15B	=41N	=30B	−17N	−49B	=50N	−33B	+51N	3.5	32.5	32.5	8.50	1747	-75.6
47	Isaeva, Varvara	1691	RUS	−26N	+40B	−34N	−42B	+54N	−25B	+56N	=49B	−32N	3.5	31.5	33.5	10.00	1710	+5.6
48	Moiseenko, Andrey	1547	RUS	−29B	−9B	+58N	−36N	+56B	=43N	−26B	−39N	+54B	3.5	31.5	31.5	6.25	1690	+48.8
49	Bambizo, Mikhail	1807	RUS	=23B	−18N	−7N	F	=43B	+46N	−36B	=47N	=39B	3.0	36.0	39.5	11.50	1830	+4.0
50	Blokha, Aleksandr	1719	RUS	−12B	−20N	+55B	−39N	+58B	−31N	=46B	=45N	−38B	3.0	33.0	33.0	6.00	1654	-16.0
51	Pivovar, Ekaterina	1491	RUS	−16B	−36N	−40N	F	+33B	+52N	+45B	−35N	−46B	3.0	32.0	32.0	11.00	1682	+61.6
52	Li, Aleksandr	1581	RUS	−42N	+37B	−32N	−40B	−44N	−51B	−33N	+57N	+56B	3.0	29.0	30.0	7.00	1553	-9.0
53	Nikitin, Vadim	1481	RUS	−22N	−30B	+57N	−37B	−45N	+58B	−44N	+55B	−40N	3.0	28.0	28.0	3.50	1588	+30.0
54	Paley, Evgeniy	1452	RUS	−34N	−39B	−44N	+57B	−47B	−26N	=55N	+58B	−48N	2.5	27.0	27.0	2.25	1502	+8.0
55	Evdokimov, Sergey	1713	RUS	−32N	−45B	−50N	−56N	+57B	−33N	=54B	−53N	+58B	2.5	24.0	24.0	2.25	1379	-133.2
56	Dimova, Arina	1497	RUS	−8B	−13N	−37N	+55B	−48N	+57N	−47B	−40B	−52N	2.0	32.0	33.0	3.50	1408	-31.6
57	Evseenko, Yuliya	0	RUS	−14B	−38N	−53B	−54N	−55N	−56B	+58N	−52B	−45N	1.0	26.0	26.0	0.00	1276	0.0
58	Ri, Yan Chun	1666	RUS	−46B	−43N	−48B	F	−50N	−53N	−57B	−54N	−55N	0.0	24.5	25.5	0.00	859	-71.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Makarov, Egor DenRUS
+111.6
5.5 pts · #17
2Asedulov, VsevolodRUS
+108.4
5.5 pts · #19
3Chernyaev, VladislavRUS
+100.4
5.5 pts · #13

Top rating losers

1Evdokimov, SergeyRUS
-133.2
2.5 pts · #55
2Simbelov, Roman T.RUS
-83.2
5.5 pts · #18
3Bekasov, IvanRUS
-75.6
3.5 pts · #46

Biggest upsets

R3+671 Elo gap
CMKaminskii, Daniil1801 beat GMOvetchkin, Roman2472
R1+657 Elo gap
Dunaev, Dmitriy1815 beat GMOvetchkin, Roman2472
R2+576 Elo gap
CMFisher, Timofey1938 beat GMTsydypov, Zhamsaran2514