Oskemen Open 2025 CHALLENGERS

SwissStandard

82 players participated in this 9-round tournament, held from 21 Jul 2025 to 29 Jul 2025 in Oskemen, Kazakhstan. 31 titled players from 7 federations. Top 10 Elo average was 2297, and top seed was Aaditya Dhingra (🇮🇳 IND, IM, 2398).

Konstantin Kornienko (🇷🇺 RUS, FM, 2141) won with 7.5/9, ahead of Eldiyar Orozbaev (7.0) and Konstantin Kazakov (6.5). Kornienko shared the lead from round 4 and won solo starting round 5.

The biggest upset came in round 9: Malika Japparbekova (1780) beat Sedrak Matevosyan (2151), a +371-point gap.

Location

🇰🇿Oskemen, Kazakhstan

Dates

21 Jul 2025 → 29 Jul 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇮🇳IMAaditya Dhingra2398

Avg top 10

2,297

Participants

Titled players · 31

IM×5

FM×10

CM×8

WIM×2

WFM×4

WCM×2

Federations · 7 represented

🇰🇿Kazakhstan×68

🇲🇳Mongolia×4

🇷🇺Russia×4

FIDE (no federation)×2

🇰🇬Kyrgyzstan×2

🇮🇳India×1

🇦🇲Armenia×1

Top 3

🥇
FMKonstantin Kornienko
🇷🇺RUS·2141
7.5pts·2423perf+118.6
🥈
IMEldiyar Orozbaev
🇰🇬KGZ·2367
7.0pts·2428perf+7.8
🥉
IMKonstantin Kazakov
🇰🇿KAZ·2288
6.5pts·2336perf+7.2

How it unfolded

Top 6 · 9 rounds

FM Konstantin Kornienko led from R5; +0.5-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R5.

Co-leaders

Kornienko7.5Orozbaev7Sodbilegt6.5Meirkhanuly6.5Kazakov6.5Mungunzul6.5

R5–R9 · LEAD HELD

FM Konstantin Kornienko held the sole lead from R5 through R9 without losing it.

R5 · HEAD-TO-HEAD · WINNER VS 2ND

FM Konstantin Kornienko beat IM Eldiyar Orozbaev (White).

WIN STREAKS · 2 top finishers

FM Konstantin Kornienko 6 wins (R1–R6)IM Eldiyar Orozbaev 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMKonstantin Kornienko	*	1	½	—
2IMEldiyar Orozbaev	0	*	1	—
3FMNaranbold Sodbilegt	½	0	*	—
4FMAkylzhan Meirkhanuly	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Kornienko, KonstantinFM	2141	RUS	+22N	+55B	+69B	+33N	+2B	+3N	=4N	=5B	=8N	7.5	46.5	49.5	39.75	2423	+118.6
2	Orozbaev, EldiyarIM	2367	KGZ	+74N	+57B	+12N	+5B	−1N	=15B	+6N	=3B	+4N	7.0	48.5	51.5	38.00	2428	+7.8
3	Kazakov, KonstantinIM	2288	KAZ	+72N	+10B	+40N	+6B	=15N	−1B	+19N	=2N	=5B	6.5	49.0	52.0	35.00	2336	+7.2
4	Sodbilegt, NaranboldFM	2363	MGL	+37B	+52N	=18B	=35N	+25B	+13N	=1B	+17N	−2B	6.5	45.5	49.5	33.75	2276	-12.2
5	Mungunzul, Bat-ErdeneWIM	2337	MGL	+43B	+49N	+27B	−2N	+35B	+34N	=17B	=1N	=3N	6.5	45.0	49.0	32.25	2284	-5.6
6	Aaditya DhingraIM	2398	IND	+51B	+26N	+11B	−3N	=34B	+49N	−2B	+12B	+17N	6.5	44.5	48.5	32.75	2314	-6.4
7	Kuderinov, KirillIM	2340	KAZ	+41N	=59B	=50N	=30B	=8N	+38B	=18N	+26B	+15B	6.5	40.5	44.0	31.75	2233	-9.3
8	Smirnova, EkaterinaWIM	2069	FID	F	+42N	=66B	+56N	=7B	+36B	+33N	+16N	=1B	6.5	40.0	43.0	31.25	2330	+51.6
9	Meirkhanuly, AkylzhanFM	2141	KAZ	+20B	−69N	+55B	−25N	=39B	+70B	+49N	+37N	+16B	6.5	35.5	38.5	28.25	2149	+6.8
10	Abdrashev, Arlen	2048	KAZ	+63B	−3N	+20B	+24N	=11B	−16N	+28B	+34N	=13B	6.0	44.5	48.0	30.00	2184	+32.8
11	Galymbek, AlikhanCM	2118	KAZ	+54N	+36B	−6N	+29B	=10N	−19B	+25N	=20B	+30N	6.0	43.0	47.0	29.25	2134	+7.6
12	Tulendinov, DinmukhammedFM	2104	KAZ	+60N	+29B	−2B	+39N	=16B	=33N	+35B	−6N	+27B	6.0	42.5	46.0	27.50	2197	+23.2
13	Kuandykuly, DanisFM	2229	KAZ	−55N	+73N	+51B	+47B	+50N	−4B	=26N	+18B	=10N	6.0	39.0	42.0	26.50	2174	-18.8
14	Kudaibergen, Nurlykhan	2142	KAZ	+70B	=28N	=25B	=27N	−49B	=39N	+56B	+69N	+29B	6.0	35.0	38.0	24.25	2069	-15.4
15	Amangeldy, ErnurFM	2195	KAZ	+48B	=25N	+28B	+18N	=3B	=2N	−16B	+19B	−7N	5.5	46.5	51.0	29.75	2217	+14.8
16	Bayantas, AsmanFM	2257	KAZ	+68B	−27N	+45N	+38B	=12N	+10B	+15N	−8B	−9N	5.5	44.5	48.0	27.00	2136	-48.3
17	Balmagambetov, Timur	2193	KAZ	−36N	+22B	+72N	+71B	+40N	+31B	=5N	−4B	−6B	5.5	42.0	45.0	24.25	2191	+2.2
18	Mazhkenov, Alisher	2094	KAZ	+65N	+77B	=4N	−15B	=30N	+45B	=7B	−13N	+37B	5.5	42.0	44.5	24.00	2160	+17.6
19	Dosmukhambetov, Arystan	1994	KAZ	+61N	+21B	=33B	−34N	+51B	+11N	−3B	−15N	+50N	5.5	40.5	44.0	25.25	2182	+45.4
20	Borumbayev, Adil	1909	KAZ	−9N	+23B	−10N	+81B	+76N	+50B	=34B	=11N	=31N	5.5	40.5	42.0	21.75	2139	+108.8
21	Khazhatuly, AlikhanFM	2172	KAZ	+56B	−19N	+43B	=49N	=26B	=25N	=27B	+41N	=22B	5.5	39.0	42.5	24.75	2069	-42.9
22	Yerzhanuly Yernur	1932	KAZ	−1B	−17N	−62B	+82N	+73B	+46N	+51B	+40B	=21N	5.5	38.0	38.0	18.75	2046	+52.1
23	Malygin, Vladislav	2187	KAZ	−28B	−20N	=46B	=73N	+75B	=32N	+54B	+55N	+38B	5.5	35.0	38.0	21.25	1981	-40.4
24	Japparbekova, Malika	1780	KAZ	−49B	+68N	+80B	−10B	−36N	+44N	=55B	+51N	+34B	5.5	34.5	36.5	20.25	2089	+133.4
25	Kotsyuba, VictorCM	1998	FID	+53N	=15B	=14N	+9B	−4N	=21B	−11B	=42N	+69B	5.0	44.5	47.5	24.25	2115	+51.6
26	Tulegenov, Amir	2085	KAZ	+71N	−6B	=36N	+60B	=21N	+30B	=13B	−7N	=32B	5.0	42.5	45.5	22.00	2132	+17.9
27	Enkhbolor NyamdavaaWFM	2003	MGL	+78N	+16B	−5N	=14B	−31N	+60B	=21N	+33B	−12N	5.0	42.5	45.0	21.75	2152	+68.0
28	Kim, KristinaWCM	1947	KAZ	+23N	=14B	−15N	−31B	+53N	+59B	−10N	=50B	+52N	5.0	40.0	43.5	22.00	2112	+38.4
29	Amreyev, Azat	1849	KAZ	+44B	−12N	+52B	−11N	=37B	=55N	+43B	+36N	−14N	5.0	40.0	43.5	21.50	2074	+97.7
30	Abdsattar, AlisherCM	2030	KAZ	=58B	=32N	+64B	=7N	=18B	−26N	+70B	+35N	−11B	5.0	39.5	42.5	21.25	2034	+1.1
31	Zhakan, Erasyl	2105	KAZ	=32B	+58N	−35B	+28N	+27B	−17N	−37B	+56N	=20B	5.0	38.5	42.0	22.25	1982	-50.9
32	Ulan, RizatCM	1908	KAZ	=31N	=30B	+76N	−50B	−38N	=23B	+57N	+49B	=26N	5.0	36.5	39.5	20.75	2111	+90.4
33	Beristenov, Kair	2183	KAZ	+39N	+38B	=19N	−1B	+59N	=12B	−8B	−27N	=41B	4.5	44.0	47.5	20.50	2032	-68.4
34	Matevosyan, Sedrak	2151	ARM	+66N	=45B	+59N	+19B	=6N	−5B	=20N	−10B	−24N	4.5	43.5	47.0	20.75	2050	-22.4
35	Nurshin, NuraliCM	1735	KAZ	+47N	=50B	+31N	=4B	−5N	+40B	−12N	−30B	=45N	4.5	42.5	46.5	21.50	2076	+129.6
36	Zhandos, Akarys	1948	KAZ	+17B	−11N	=26B	=58N	+24B	−8N	=50N	−29B	+65B	4.5	41.0	44.5	20.75	1991	+19.8
37	Baitleu, Syrym	1975	KAZ	−4N	−71B	+65N	+63B	=29N	+61B	+31N	−9B	−18N	4.5	39.0	42.0	18.00	1988	+1.6
38	Fedorov, Grigory	2003	RUS	+62B	−33N	+79B	−16N	+32B	−7N	=42B	+60N	−23N	4.5	38.5	41.0	16.75	2031	+5.0
39	Assylkhan, Asiya	1943	KAZ	−33B	+62N	+57N	−12B	=9N	=14B	−40N	=58B	+61B	4.5	38.0	41.5	18.50	2008	+30.0
40	Tkachyov, Adil	2093	KAZ	+67B	+81N	−3B	+69N	−17B	−35N	+39B	−22N	=43N	4.5	37.5	39.0	14.75	1942	-31.4
41	Saidulla, Bakdaulet	1969	KAZ	−7B	=46N	−58B	+62N	+54B	=69N	+64B	−21B	=33N	4.5	35.5	38.5	17.00	1976	-0.4
42	Qusaiyn, Altynbek	1899	KAZ	−50N	−8B	+75N	=57B	=72N	+76B	=38N	=25B	=47N	4.5	34.0	37.0	16.25	2004	+31.5
43	Rakhat, Edige	1958	KAZ	−5N	+75B	−21N	=79B	=78N	+71B	−29N	+63N	=40B	4.5	33.5	36.0	14.25	1958	-5.6
44	Akhmet, SuleymanCM	2049	KAZ	−29N	+54B	−71N	+53B	−70N	−24B	+61N	+66N	=48B	4.5	33.0	36.0	17.25	1858	-82.1
45	Zhumabek, NurasylFM	1987	KAZ	+82B	=34N	−16B	=70N	+58B	−18N	−69B	+67N	=35B	4.5	33.0	33.0	13.00	1942	-21.2
46	Khen, Andrey	1855	KAZ	−59N	=41B	=23N	=72B	=57N	−22B	=77N	+74B	+56B	4.5	32.0	34.5	16.00	1978	+56.0
47	Kabylbek, YedilCM	1995	KAZ	−35B	+67N	+81B	−13N	=69B	−56N	=58B	+64N	=42B	4.5	32.0	33.5	14.00	1880	-50.2
48	Aiten, Islam	1950	KAZ	−15N	=78B	−53N	−61B	=74N	+62B	+79N	+71B	=44N	4.5	29.5	32.0	14.00	1884	-31.2
49	Tokbayev, Anuar	2023	KAZ	+24N	−5B	+77N	=21B	+14N	−6B	−9B	−32N	=54B	4.0	45.5	48.0	18.75	2013	-7.2
50	Ishmukhametov, Adil	2099	KAZ	+42B	=35N	=7B	+32N	−13B	−20N	=36B	=28N	−19B	4.0	42.5	47.0	19.75	1947	-34.4
51	Altynbek, AiaruWFM	1977	KAZ	−6N	+65B	−13N	+64B	−19N	+78B	−22N	−24B	+71N	4.0	39.0	41.5	12.50	1924	-28.5
52	Bigabylov, ZhubanFM	2031	KAZ	+75N	−4B	−29N	=54B	−60N	+77B	=71N	+70N	−28B	4.0	33.0	35.5	12.00	1883	-35.4
53	Seilbay, Timur	1759	KAZ	−25B	=56N	+48B	−44N	−28B	=63N	−67B	+80N	+70B	4.0	32.5	34.5	13.00	1903	+66.4
54	Almazuly, Azamat	1908	KAZ	−11B	−44N	+82B	=52N	−41N	+81B	−23N	+77B	=49N	4.0	32.5	32.5	8.00	1901	-3.0
55	Sezdbekov, Arzybek	1952	KGZ	+13B	−1N	−9N	+77B	=71N	=29B	=24N	−23B	F	3.5	42.5	45.0	15.25	1947	-3.0
56	Oyungerel SharavdorjWCM	1936	MGL	−21N	=53B	+61N	−8B	+79N	+47B	−14N	−31B	−46N	3.5	39.5	42.0	12.50	1883	-28.0
57	Skak, Abuali	2073	KAZ	+64B	−2N	−39B	=42N	=46B	=58N	−32B	−65N	+73B	3.5	36.0	39.0	12.75	1846	-108.4
58	Mirzhanov, ArlanCM	1840	KAZ	=30N	−31B	+41N	=36B	−45N	=57B	=47N	=39N	F	3.5	36.0	36.0	15.50	1963	+48.4
59	Baisalbekov, Maksat	2060	KAZ	+46B	=7N	−34B	+66N	−33B	−28N	−60B	=73N	=64B	3.5	35.5	38.5	14.50	1914	-66.9
60	Tynyshtyk, DianaWFM	1905	KAZ	−12B	=80N	+73B	−26N	+52B	−27N	+59N	−38B	F	3.5	34.5	36.5	11.50	1962	+22.4
61	Dzhumakanov, Kuanysh	1734	KAZ	−19B	=70N	−56B	+48N	+66B	−37N	−44B	+72B	−39N	3.5	33.5	36.5	12.50	1883	+62.4
62	Tulekenova, Aiza	1761	KAZ	−38N	−39B	+22N	−41B	−64N	−48N	+82B	+76B	=67N	3.5	33.5	33.5	10.25	1839	+30.8
63	Elemes, Nurmukhamed	1843	KAZ	−10N	−72B	+68B	−37N	=81N	=53B	+76N	−43B	=66B	3.5	32.0	33.5	11.00	1838	-4.4
64	Sergeyev, Dmitriy	1862	KAZ	−57N	+74B	−30N	−51N	+62B	+72B	−41N	−47B	=59N	3.5	31.5	34.5	11.25	1897	+7.6
65	Kuanyshev, Miras	1883	KAZ	−18B	−51N	−37B	=74B	=80N	=68N	+75B	+57B	−36N	3.5	31.5	33.5	10.75	1900	+6.5
66	Orazalina, NursuluWFM	1933	KAZ	−34B	+82N	=8N	−59B	−61N	=79B	+78N	−44B	=63N	3.5	31.0	31.0	8.75	1836	-44.8
67	Mamakova, Aknur	1877	KAZ	−40N	−47B	+74N	−76B	−77N	+80B	+53N	−45B	=62B	3.5	29.5	31.5	10.75	1839	-19.0
68	Segizbayev, Iskander	1955	KAZ	−16N	−24B	−63N	−75B	+82N	=65B	−74N	+81B	+78N	3.5	28.0	28.0	5.75	1783	-83.6
69	Nasybullina, Dayana	1859	RUS	F	+9B	−1N	−40B	=47N	=41B	+45N	−14B	−25N	3.0	45.0	49.5	15.50	1971	+20.0
70	Kolosovskiy, Anton	1932	KAZ	−14N	=61B	+78N	=45B	+44B	−9N	−30N	−52B	−53N	3.0	38.0	40.5	11.00	1836	-22.8
71	Elemes, Beibarys	1874	KAZ	−26B	+37N	+44B	−17N	=55B	−43N	=52B	−48N	−51B	3.0	36.5	40.0	12.75	1894	+7.6
72	Baimurzin, AitkazyIM	1956	KAZ	−3B	+63N	−17B	=46N	=42B	−64N	=73B	−61N	=75N	3.0	34.5	37.5	11.00	1796	-40.0
73	Duabek, Abylaikhan	1779	KAZ	=76N	−13B	−60N	=23B	−22N	+82B	=72N	=59B	−57N	3.0	33.5	33.5	7.50	1875	+33.8
74	Cherny, Oleg	1977	RUS	−2B	−64N	−67B	=65N	=48B	=75N	+68B	−46N	=79B	3.0	33.0	35.5	10.25	1811	-42.6
75	Zaitsev, Ilya	1841	KAZ	−52B	−43N	−42B	+68N	−23N	=74B	−65N	+82N	=72B	3.0	31.5	31.5	6.50	1828	-8.4
76	Gude, R	2005	KAZ	=73B	=79N	−32B	+67N	−20B	−42N	−63B	−62N	+77N	3.0	31.0	33.5	8.75	1711	-68.6
77	Bulat, Mansur R	1713	KAZ	+80B	−18N	−49B	−55N	+67B	−52N	=46B	−54N	−76B	2.5	32.0	34.0	7.75	1803	+29.6
78	Nurakyn, Suleiman	1774	KAZ	−27B	=48N	−70B	+80N	=43B	−51N	−66B	=79N	−68B	2.5	30.5	32.5	7.75	1781	+1.1
79	Kozhabekov, Adilkhan	1836	KAZ	F	=76B	−38N	=43N	−56B	=66N	−48B	=78B	=74N	2.5	29.0	29.0	8.25	1801	-7.2
80	Babkin, Kirill	1981	KAZ	−77N	=60B	−24N	−78B	=65B	−67N	+81N	−53B	F	2.0	26.5	26.5	5.00	1604	-107.2
81	Nabiyev, Iman	1678	KAZ	F	−40B	−47N	−20N	=63B	−54N	−80B	−68N	+82B	1.5	27.5	27.5	1.75	1673	-6.4
82	Myrza, Sultankozha	1731	KAZ	−45N	−66B	−54N	−22B	−68B	−73N	−62N	−75B	−81N	0.0	30.5	32.0	0.00	1063	-118.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Japparbekova, MalikaKAZ
+133.4
5.5 pts · #21
2Nurshin, NuraliCMKAZ
+129.6
4.5 pts · #35
3Kornienko, KonstantinFMRUS
+118.6
7.5 pts · #1

Top rating losers

1Myrza, SultankozhaKAZ
-118.0
0.0 pts · #82
2Skak, AbualiKAZ
-108.4
3.5 pts · #68
3Babkin, KirillKAZ
-107.2
2.0 pts · #80

Biggest upsets

R9+371 Elo gap
Japparbekova, Malika1780 beat Matevosyan, Sedrak2151
R3+370 Elo gap
CMNurshin, Nurali1735 beat Zhakan, Erasyl2105
R6+358 Elo gap
CMNurshin, Nurali1735 beat Tkachyov, Adil2093