20th Dato Arthur Tan Malaysian Open Chess Championship

SwissStandard

88 players participated in this 9-round tournament, held from 15 Sept 2025 to 21 Sept 2025 in Kuala Lumpur, Malaysia. 41 titled players from 8 federations. Top 10 Elo average was 2383, and top seed was Duc Hoa Nguyen (🇻🇳 VIE, GM, 2442).

Kavin Mohan (🇲🇾 MAS, FM, 2309) won with 7.0/9, ahead of Nguyen Van Huy (6.5) and Ruijun Jin (6.5). Mohan shared the lead from round 7 and won solo starting round 8.

The biggest upset came in round 5: Gongpu Cheng (1964) beat Muhammad Kamalsyah (FM, 2314), a +350-point gap.

Location

🇲🇾Kuala Lumpur, Malaysia

Dates

15 Sept 2025 → 21 Sept 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇻🇳GMDuc Hoa Nguyen2442

Avg top 10

2,383

Participants

Titled players · 41

GM×3

IM×11

FM×9

CM×4

WGM×1

WIM×5

WFM×7

WCM×1

Federations · 8 represented

🇲🇾Malaysia×33

🇵🇭Philippines×15

🇮🇳India×10

🇨🇳China×8

🇻🇳Vietnam×7

🇺🇿Uzbekistan×3

🇮🇩Indonesia×3

🇸🇬Singapore×3

Top 3

🥇
FMKavin Mohan
🇲🇾MAS·2309
7.0pts·2456perf+36.8
🥈
GMNguyen Van Huy
🇻🇳VIE·2352
6.5pts·2407perf+9.1
🥉
Ruijun Jin
🇨🇳CHN·2079
6.5pts·2451perf+84.8

How it unfolded

Top 6 · 9 rounds

FM Kavin Mohan led from R8; +0.5-point edge over the runner-up. Title race converged from 6 co-leaders at R4 to 1 by R8.

Co-leaders

Mohan7Wong6.5Concio6.5Winkelman6.5Jin6.5Nguyen6.5

R8 · LEADER CHANGE20 Sept

FM Kavin Mohan takes the sole lead (6.5/8).

WIN STREAKS · 2 top finishers

FM Yinn Long Wong 4 wins (R6–R9)IM Michael Jr. Concio 3 wins (R1–R3)

R5 · LATE SURGE

FM Yinn Long Wong was #34 at R5, climbed to #2 over the final stretch.

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMKavin Mohan	*	—	½	—
2FMYinn Long Wong	—	*	—	—
3IMMichael Jr. Concio	½	—	*	½
4FMAlbert Winkelman	—	—	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Kavin MohanFM	2309	MAS	+49B	+24N	=8B	=14N	+64B	=4N	+11B	+10B	=2N	7.0	44.5	48.0	35.75	2456	+36.8
2	Nguyen Van HuyGM	2352	VIE	+66N	+19B	+17N	=11N	=6B	=10B	=12N	+15B	=1B	6.5	46.5	50.0	35.00	2407	+9.1
3	Jin, Ruijun	2079	CHN	+86N	=6B	=13N	+7B	−10N	+17B	+16N	=5B	+38N	6.5	46.0	47.0	32.25	2451	+84.8
4	Concio, Michael Jr.IM	2409	PHI	+44N	+20B	+29N	=5B	=12N	=1B	=15N	=27B	+10N	6.5	45.5	50.0	35.25	2375	-1.0
5	Winkelman, AlbertFM	2324	AUS	+50B	+42N	+9B	=4N	=11B	−6N	+26B	=3N	+29B	6.5	45.5	49.5	33.75	2393	+22.0
6	Nguyen, Quoc HyIM	2413	VIE	+63B	=3N	+40B	+39N	=2N	+5B	−10N	=13B	+20N	6.5	45.0	48.5	33.75	2397	+0.8
7	Wong, Yinn LongFM	2356	MAS	=79B	+65N	=28B	−3N	=63B	+57N	+30B	+34N	+8B	6.5	38.5	41.0	29.00	2237	-18.6
8	Bacojo, Mark JayIM	2326	PHI	+15N	+32B	=1N	=18B	+43N	−13B	+24N	+12B	−7N	6.0	45.5	50.0	31.75	2309	-0.4
9	Nguyen, Duc HoaGM	2442	VIE	+78N	+25B	−5N	=19B	+24B	+21N	=13N	=38B	=27N	6.0	42.5	45.0	28.25	2310	-11.9
10	Kushagra MohanIM	2432	IND	+56B	=43N	=14B	+28N	+3B	=2N	+6B	−1N	−4B	5.5	48.0	52.0	30.25	2313	-11.0
11	Zou, ChenIM	2416	CHN	+41N	+27B	+38N	=2B	=5N	=12B	−1N	+18B	F	5.5	46.0	50.5	28.75	2380	-2.4
12	Laxman, R.R.GM	2271	IND	+68B	=26N	+67B	+16N	=4B	=11N	=2B	−8N	=14B	5.5	44.0	47.5	27.00	2285	+4.6
13	Liu, XiangyiIM	2349	SGP	=48B	+79N	=3B	=33N	+46B	+8N	=9B	=6N	F	5.5	44.0	46.5	27.00	2312	-1.0
14	Lye, Lik ZangFM	2240	MAS	+52N	+73B	=10N	=1B	=18N	−15B	=19N	+31B	=12N	5.5	43.5	46.5	26.50	2196	-4.8
15	Sebastian, Mhage Gerriahlou	1930	PHI	−8B	+87N	+57B	=27N	+40B	+14N	=4B	−2N	=21B	5.5	43.5	44.0	23.00	2230	+65.0
16	Karthik RajaaIM	2330	IND	+74N	=33B	+36N	−12B	+32B	=27N	−3B	+28B	=19N	5.5	42.5	45.5	25.75	2169	-32.4
17	Frayna, Janelle MaeWGM	2313	PHI	+54N	+35B	−2B	−24N	+67B	−3N	+48B	=26N	+46B	5.5	40.5	44.0	23.50	2120	-36.2
18	Gireman, JaFM	2208	IND	=70B	+48N	+26B	=8N	=14B	=51N	=25B	−11N	+42B	5.5	39.5	43.0	25.50	2238	+9.8
19	Salimova, AsalWFM	2095	UZB	+72B	−2N	+77B	=9N	−51B	+53N	=14B	+50N	=16B	5.5	39.0	41.5	22.50	2213	+28.4
20	Bancod, RonaldIM	2106	PHI	+62B	−4N	=49B	+56N	=50B	=48N	+64B	+25N	−6B	5.5	38.0	41.5	22.50	2153	+5.7
21	Hong, Mingren	2170	CHN	−65B	+69N	+63N	=41B	+66N	−9B	=31N	+35B	=15N	5.5	36.5	40.0	23.00	2085	-32.4
22	Abd Aziz, A Qil A Lauddin	1920	MAS	−38B	+82N	−24B	+88N	+42B	−25N	+33B	=39N	+40B	5.5	35.0	35.0	18.25	2138	+85.2
23	Andyka, PitraIM	2148	INA	=60B	+70N	=51B	=50N	−26B	=63N	+49B	=42N	+64B	5.5	32.5	36.0	21.00	2079	-14.0
24	Cantela, Oscar Joseph	2007	PHI	+71N	−1B	+22N	+17B	−9N	+43B	−8B	=40N	=34B	5.0	44.0	47.5	23.75	2187	+79.2
25	Li, BoIM	2209	CHN	+76N	−9N	=33B	+37B	=31N	+22B	=18N	−20B	=30N	5.0	42.5	45.5	23.75	2127	-9.2
26	Xie, Chujun	2000	CHN	+88N	=12B	−18N	+54B	+23N	=38B	−5N	=17B	=28N	5.0	42.0	42.0	19.75	2200	+76.8
27	Velarde, Jerish John	2110	PHI	+61N	−11N	+53B	=15B	+41N	=16B	F	=4N	=9B	5.0	41.5	45.5	24.25	2251	+27.2
28	Imomkuzieva, NilufarkhonWFM	2104	UZB	=59N	+81B	=7N	−10B	=44N	+78B	+39B	−16N	=26B	5.0	38.0	40.0	19.00	2151	+22.0
29	Kamalsyah, MuhammadFM	2314	INA	+53B	+57N	−4B	−64N	−48B	+68N	+56B	+47N	−5N	5.0	37.0	40.5	20.00	2115	-39.0
30	Shahar, Uzair	2070	MAS	+75N	=51N	−39B	−66B	+45N	+44B	−7N	+41B	=25B	5.0	37.0	40.0	21.00	2133	+29.2
31	Bhuvan Krishna Prasanth	2056	IND	+82B	−38N	+55B	=51N	=25B	=39N	=21B	−14N	+48B	5.0	37.0	39.0	19.50	2165	+52.0
32	Canino, RuelleWIM	2065	PHI	+84N	−8N	+68B	=38B	−16N	+58B	−34N	=45B	+73N	5.0	36.0	37.5	16.50	2049	-1.1
33	Mendoza, Shania MaeWFM	2069	PHI	+87B	=16N	=25N	=13B	−38N	=66B	−22N	+77B	+60N	5.0	36.0	36.5	16.75	2105	+8.8
34	Shen, Ree HerngCM	2113	MAS	=67B	=55N	−50B	+69N	+65B	=64N	+32B	−7B	=24N	5.0	35.0	38.5	20.00	2008	-44.4
35	Lee, Zhia Chen Zachary	2034	MAS	+58B	−17N	=65B	=67N	=68B	+73N	=40B	−21N	+53B	5.0	34.0	37.0	18.50	1989	-8.8
36	Sreekarthika VelmuruganWFM	2080	SGP	=69B	+60N	−16B	+49N	=39B	−50N	=63B	=48N	+56B	5.0	33.5	37.0	19.75	2045	-16.4
37	Chua, Chee Sian Sebastien	1998	MAS	F	+74B	=54N	−25N	+77B	−40N	+68B	=52N	+49B	5.0	30.5	30.5	17.00	2066	+13.6
38	Aakanksha HagawaneWIM	2320	IND	+22N	+31B	−11B	=32N	+33B	=26N	F	=9N	−3B	4.5	43.5	47.5	23.50	2174	-24.6
39	Nolte, RolandoIM	2299	PHI	+77N	=64B	+30N	−6B	=36N	=31B	−28N	=22B	=63N	4.5	39.0	41.5	18.75	2063	-24.8
40	Castellano, ChristopherFM	2129	PHI	=81N	+59B	−6N	+78B	−15N	+37B	=35N	=24B	−22N	4.5	39.0	41.0	17.50	1986	-32.2
41	Genkeswaran, GenivanFM	1992	MAS	−11B	+61N	+88B	=21N	−27B	=46N	=43B	−30N	+52B	4.5	38.0	38.0	15.25	2045	+16.8
42	Le, Dang Thanh An	2046	VIE	+83N	−5B	−45N	+52B	−22N	+76B	+74N	=23B	−18N	4.5	37.5	39.0	14.25	1990	-12.6
43	Swayham P DasCM	2160	IND	+80N	=10B	=64N	+45B	−8B	−24N	=41N	=63B	=44N	4.5	37.0	39.5	17.75	2066	-44.4
44	Shrutarshi Ray	1989	IND	−4B	=62N	=69B	+55N	=28B	−30N	=73B	+65N	=43B	4.5	36.0	39.0	17.50	1974	-4.6
45	Julmiri, Muhammad Zulfaqar Bin Abu Bakar	1961	MAS	−51B	+75N	+42B	−43N	−30B	+65N	=46B	=32N	=47B	4.5	35.5	38.5	18.00	2046	+19.2
46	Tran Vo Quoc Bao	2095	VIE	−73N	+52B	=66N	+79B	−13N	=41B	=45N	+54B	−17N	4.5	34.5	37.0	16.75	2014	-18.8
47	Malikova, MarjonaWIM	2071	UZB	=55B	−67N	+70B	=65N	=53B	=49N	+66B	−29B	=45N	4.5	32.0	35.5	17.00	1947	-29.2
48	Cheng, Gongpu	1964	CHN	=13N	−18B	=81N	+59B	+29N	=20B	−17N	=36B	−31N	4.0	41.0	43.0	18.00	2068	+40.0
49	Magpily, Francois Marie	1912	PHI	−1N	+71B	=20N	−36B	+83N	=47B	−23N	+61B	−37N	4.0	40.0	41.5	14.00	1936	+4.4
50	Vo Hoang QuanCM	1924	VIE	−5N	+84B	+34N	=23B	=20N	+36B	F	−19B	F	4.0	39.0	39.0	17.00	2129	+72.4
51	Lim, Zhuo RenFM	2332	MAS	+45N	=30B	=23N	=31B	+19N	=18B	F	F	F	4.0	36.0	36.0	20.50	2215	-15.2
52	Largo, FranchescaWFM	1904	PHI	−14B	−46N	+62B	−42N	=69B	+72N	+78N	=37B	−41N	4.0	35.0	37.5	14.25	1919	+2.8
53	Umayan, Samantha Babol	1917	PHI	−29N	+83B	−27N	+81B	=47N	−19B	=61N	+58B	−35N	4.0	35.0	36.5	11.75	1908	-3.4
54	N. Tarun	1915	IND	−17B	+58N	=37B	−26N	−73B	+67N	+80B	−46N	=55B	4.0	34.5	37.0	14.50	1887	-7.6
55	Lau, Sau Ching	1884	MAS	=47N	=34B	−31N	−44B	=59N	=75B	=58N	+84B	=54N	4.0	34.0	35.5	13.75	1840	-10.0
56	Tin, Shan Wen	1994	MAS	−10N	=80B	+73N	−20B	=61N	+81B	−29N	+74B	−36N	4.0	33.5	35.5	11.25	1960	-10.6
57	Yash Jyoti BirWFM	2018	IND	+85N	−29B	−15N	+74B	=58N	−7B	=77N	=76B	=59N	4.0	33.5	35.0	11.25	1881	-30.4
58	Chen, Baize	1649	CHN	−35N	−54B	+86B	+70N	=57B	−32N	=55B	−53N	+74N	4.0	32.5	33.5	11.50	1882	+94.8
59	Helmy, Muhammad Adnin Nuaym	1760	MAS	=28B	−40N	=76B	−48N	=55B	+70N	+79B	−64N	=57B	4.0	31.5	34.0	14.00	1945	+79.2
60	Mohd Afif, Ainul MardhiahWFM	1861	MAS	=23N	−36B	−78N	+84B	=79N	−74B	+75N	+66N	−33B	4.0	30.0	31.5	12.00	1905	+19.2
61	Kumaran, Ashwiniy	1805	MAS	−27B	−41B	=84N	+87N	=56B	=79N	=53B	−49N	+80B	4.0	28.0	28.5	9.00	1863	+26.0
62	Nizzardo, Mattia	1795	ITA	−20N	=44B	−52N	−83B	=75N	=71B	+85N	+81B	=76N	4.0	27.0	28.5	10.50	1756	-9.2
63	Galas, BernadetteWIM	1989	PHI	−6N	F	−21B	+76B	=7N	=23B	=36N	=43N	=39B	3.5	41.0	42.0	16.00	2144	+27.0
64	Mahmood Shah, Mukhriez ShahCM	2030	MAS	F	=39N	=43B	+29B	−1N	=34B	−20N	+59B	−23N	3.5	41.0	41.0	16.00	2108	+14.2
65	Cheah, Cheok Fung	1868	MAS	+21N	−7B	=35N	=47B	−34N	−45B	+81N	−44B	=71N	3.5	39.0	41.0	14.00	1925	+9.2
66	Muraley, Rittesh	1967	MAS	−2B	+72N	=46B	+30N	−21B	=33N	−47N	−60B	=67N	3.5	38.5	42.0	15.00	1948	-14.4
67	Wee, Yin Lin	1810	MAS	=34N	+47B	−12N	=35B	−17N	−54B	F	+82N	=66B	3.5	36.0	38.0	13.25	1981	+58.8
68	Rajasa, Muhammad Andi	1904	INA	−12N	+85B	−32N	+75B	=35N	−29B	−37N	−69B	+83B	3.5	33.5	35.0	8.50	1842	-16.8
69	Ainul Fikri, Aqilah Husna	1746	MAS	=36N	−21B	=44N	−34B	=52N	−77B	F	+68N	+70B	3.5	33.5	33.5	13.75	1948	+73.2
70	Meiyazhagan, Kaviinayan	1885	KOR	=18N	−23B	−47N	−58B	+84N	−59B	+82B	+80N	−69N	3.5	31.5	33.0	8.75	1788	-51.6
71	Teoh, Je Hern	1622	MAS	−24B	−49N	−75B	−82N	+87B	=62N	=72B	+85N	=65B	3.5	26.5	27.0	7.50	1687	+22.0
72	Lim, Kian Guan	1754	MAS	−19N	−66B	=83N	−80B	+85N	−52B	=71N	+75B	=77N	3.5	26.0	27.5	8.25	1723	-9.2
73	Nik Norhisham, Nik Muhd Haziq	1749	MAS	+46B	−14N	−56B	=77N	+54N	−35B	=44N	F	−32B	3.0	35.0	37.5	12.00	1931	+31.0
74	Nithyalakshmi, SivanesanWCM	1891	MAS	−16B	−37N	+82B	−57N	+86B	+60N	−42B	−56N	−58B	3.0	33.0	34.0	7.00	1793	-24.8
75	Wee, Yu Heng Lucas John	1710	SGP	−30B	−45B	+71N	−68N	=62B	=55N	−60B	−72N	+81B	3.0	32.0	34.0	9.50	1727	+3.6
76	Ramakrishnan, Yoggenraj	1890	MAS	−25B	=78B	=59N	−63N	+82B	−42N	F	=57N	=62B	3.0	31.0	33.0	9.25	1850	-21.6
77	Khandhar, Kaushal	1907	MAS	−39B	F	−19N	=73B	−37N	+69N	=57B	−33N	=72B	2.5	34.0	34.0	8.75	1825	-20.0
78	Nguyen Thanh Thuy TienWIM	1996	VIE	−9B	=76N	+60B	−40N	+80B	−28N	−52B	F	F	2.5	32.0	32.0	8.00	1920	-17.4
79	Zhao, Chenyu	1980	CHN	=7N	−13B	+80N	−46N	=60B	=61B	−59N	F	F	2.5	31.0	31.0	9.75	1912	-34.0
80	Ong, Way Justin	1867	MAS	−43B	=56N	−79B	+72N	−78N	+83B	−54N	−70B	−61N	2.5	28.5	30.0	7.00	1741	-31.6
81	Lum, Zhun Hoong	1814	MAS	=40B	−28N	=48B	−53N	+88B	−56N	−65B	−62N	−75N	2.0	32.0	32.0	4.25	1613	-36.2
82	Wang, Xin Yu Aimee	1678	MAS	−31N	−22B	−74N	+71B	−76N	+86B	−70N	−67B	F	2.0	28.0	28.0	4.50	1657	-12.4
83	Huang, Aaron Yu-Hsi	1667	TPE	−42B	−53N	=72B	+62N	−49B	−80N	−84B	F	−68N	1.5	27.5	27.5	5.75	1610	-24.0
84	Wang, Xin Ran Claire	1686	MAS	−32B	−50N	=61B	−60N	−70B	F	+83N	−55N	F	1.5	26.0	26.0	3.50	1641	-16.8
85	Shoban Babu, Lavinesh Babu	1515	MAS	−57B	−68N	=87B	−86N	−72B	+88N	−62B	−71B	F	1.5	20.0	20.0	0.25	1344	-29.2
86	Suneth, Shyam Keshaav	1725	MAS	−3B	F	−58N	+85B	−74N	−82N	F	F	F	1.0	20.5	20.5	1.50	1517	-27.2
87	Hasnul, Hashim	1695	BRU	−33N	−15B	=85N	−61B	−71N	F	F	F	F	0.5	19.5	19.5	0.75	1417	-30.6
88	FIDE 35816155	0	—	−26B	F	−41N	−22B	−81N	−85B	F	F	F	0.0	23.5	23.5	0.00	1043	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Chen, BaizeCHN
+94.8
4.0 pts · #56
2Abd Aziz, A Qil A LauddinMAS
+85.2
5.5 pts · #43
3Jin, RuijunCHN
+84.8
6.5 pts · #5

Top rating losers

1Meiyazhagan, KaviinayanKOR
-51.6
3.5 pts · #63
2Swayham P DasCMIND
-44.4
4.5 pts · #39
3Shen, Ree HerngCMMAS
-44.4
5.0 pts · #28

Biggest upsets

R5+350 Elo gap
Cheng, Gongpu1964 beat FMKamalsyah, Muhammad2314
R1+346 Elo gap
Nik Norhisham, Nik Muhd Haziq1749 beat Tran Vo Quoc Bao2095
R6+310 Elo gap
Sebastian, Mhage Gerriahlou1930 beat FMLye, Lik Zang2240