9th Eastern Asia Youth Chess Championships 2025 Standard-U12

Open SwissStandard

52 players participated in this 9-round tournament, held from 22 Jul 2025 to 28 Jul 2025 in Zhuhai,GuangDong, China. 1 titled players from 8 federations. Top 10 Elo average was 1881, and top seed was Hongya Zhang (🇨🇳 CHN, 2029).

Ban Cao (🇨🇳 CHN, 1728) won with 7.0/9, ahead of Ruiqi Lv (7.0) and Kenny Horasino Bach (6.5). Cao won on tie-break after catching the field in the final round.

The biggest upset came in round 7: Yuyang Xie (1706) beat Jinnan Xia (1970), a +264-point gap.

Location

🇨🇳Zhuhai,GuangDong, China

Dates

22 Jul 2025 → 28 Jul 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇨🇳Hongya Zhang2029

Avg top 10

1,881

Participants

Titled players · 1

CM×1

Federations · 8 represented

🇨🇳China×26

🇭🇰Hong Kong China×6

🇲🇳Mongolia×6

🇻🇳Vietnam×2

🇰🇷South Korea×2

🇮🇩Indonesia×1

🇲🇾Malaysia×1

🇲🇴Macau China×1

Top 3

🥇
Ban Cao
🇨🇳CHN·1728
7.0pts·1971perf+77.2
🥈
CMRuiqi Lv
🇨🇳CHN·1835
7.0pts·1864perf+8.0
🥉
Kenny Horasino Bach
🇮🇩INA·1907
6.5pts·1906perf+6.8

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 5 co-leaders at R4 to 2 at the finish.

Co-leaders

Cao7Lv7Zhang6.5Xie6.5Bach6.5Zuo6

R8 · LEADER CHANGE27 Jul

Yuyang Xie takes the sole lead (6.5/8).

R9 · TIEBREAK CLUSTER

2 players finish on 7.0/9. Cao takes the title on Buchholz Cut1 (45.0).

R7 · HEAD-TO-HEAD · WINNER VS 2ND

Ban Cao drew with CM Ruiqi Lv (Black).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Ban Cao	*	½	—	—
2CMRuiqi Lv	½	*	—	1
3Hongya Zhang	—	—	*	—
4Yuyang Xie	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Cao, Ban	1728	CHN	+12N	+50B	=13N	−11B	+32N	+8B	=2N	+16B	+6N	7.0	45.0	46.5	34.75	1971	+77.2
2	Lv, RuiqiCM	1835	CHN	=39B	−29N	+47B	+43N	+18B	+9N	=1B	+19N	+5B	7.0	40.5	42.5	32.75	1864	+8.0
3	Bach, Kenny Horasino	1907	INA	+41N	+23B	+10N	=4N	−6B	=15B	=27N	+11B	+12N	6.5	44.5	48.0	33.75	1906	+6.8
4	Zhang, Hongya	2029	CHN	+38N	+26B	+15N	=3B	−11N	+28B	=12N	+7B	=9N	6.5	44.0	47.5	33.00	1966	-13.7
5	Xie, Yuyang	1706	CHN	−20B	+44N	+17B	=38N	+14N	+13B	+11N	+6B	−2N	6.5	43.5	46.5	32.75	2030	+104.0
6	Zuo, Junyu	1967	CHN	+24N	+30B	=27N	+13B	+3N	+11B	=7N	−5N	−1B	6.0	46.5	51.0	32.25	1882	-30.0
7	Mohd. Zain, Harith Kamil Zafri	1763	MAS	+42N	+28B	=11N	+14B	=8N	=12B	=6B	−4N	+21B	6.0	44.5	48.0	30.00	1945	+67.6
8	Todmunkh, Turbat	1741	MGL	+52N	−10B	+41N	+22B	=7B	−1N	+14N	+27B	=13N	6.0	43.0	43.5	24.75	1771	+12.8
9	Zhou, Guoyu	1834	CHN	=32N	+49B	=22N	+27B	+23N	−2B	+20N	=12B	=4B	6.0	42.5	44.0	26.50	1828	+0.4
10	Lin, Yi Christopher	1546	SGP	+33B	+8N	−3B	−26N	−17B	+44N	+45B	+43N	+18B	6.0	37.5	40.5	24.00	1761	+41.2
11	Xia, Jinnan	1970	CHN	+34B	+18N	=7B	+1N	+4B	−6N	−5B	−3N	+19B	5.5	48.5	52.5	30.50	1835	-47.6
12	Ma, Ruihan	0	CHN	−1B	+?B	+30N	+21N	+26B	=7N	=4B	=9N	−3B	5.5	46.0	46.0	23.25	1796	0.0
13	Jang, Seojun	1805	KOR	+40B	+25N	=1B	−6N	+38B	−5N	=18B	+26N	=8B	5.5	43.5	47.0	25.50	1740	-24.8
14	Ding, Zhiyuan	1942	CHN	+19B	=21N	+29B	−7N	−5B	+17N	−8B	+33N	+28N	5.5	43.0	47.0	26.00	1624	-94.8
15	Azbilig, Gansukh	1736	MGL	+44B	+20N	−4B	+25N	=28B	=3N	−19B	=17N	+26B	5.5	42.5	45.5	25.75	1832	+24.8
16	Yao, Yichen	1760	CHN	+17B	=22N	=21B	−28N	+39B	+25N	=26B	−1N	+29B	5.5	41.0	44.5	25.75	1632	-46.8
17	Li, Shicheng	0	CHN	−16N	+51B	−5N	+50B	+10N	−14B	+22N	=15B	+27N	5.5	40.0	41.0	20.75	1705	0.0
18	Hu, Anpeng	1687	HKG	+35N	−11B	=32N	+24B	−2N	+38B	=13N	+20B	−10N	5.0	42.0	45.5	22.25	1632	-19.6
19	Altansukh, Munkhjargal	0	MGL	−14N	=35B	+49N	+30B	=27N	+23B	+15N	−2B	−11N	5.0	41.5	43.0	20.75	1789	0.0
20	Qiu, Tianyu	0	CHN	+5N	−15B	−23N	+41B	+34B	+21N	−9B	−18N	+40B	5.0	40.5	44.0	22.50	1625	0.0
21	Xiao, Zijun	1657	CHN	+45N	=14B	=16N	−12B	+40N	−20B	+28N	+35B	−7N	5.0	39.5	42.5	20.50	1766	+21.6
22	Say, Hoi Wang Isaac	1539	HKG	+43N	=16B	=9B	−8N	+37B	−26N	−17B	+45N	+32B	5.0	38.5	41.5	19.75	1569	+4.8
23	Pham, Hai Minh Huy	1655	VIE	+46B	−3N	+20B	+34N	−9B	−19N	−32B	+39N	+43B	5.0	37.0	39.5	18.00	1611	-8.4
24	Leung, Kwan Yat Calix	1462	HKG	−6B	+48N	=43B	−18N	+36B	=32N	=33B	+31N	=30B	5.0	35.0	37.0	18.25	1465	-1.6
25	Zhang, Jiachen(GD)	1550	CHN	+51N	−13B	+45N	−15B	+31N	−16B	−43N	+34B	+35N	5.0	35.0	36.0	16.50	1499	-12.4
26	Maetavittayakorn, Chawakorn	1712	THA	+31N	−4N	+39B	+10B	−12N	+22B	=16N	−13B	−15N	4.5	44.0	47.5	21.75	1680	-13.6
27	Lee, Ain	1722	KOR	+37B	+47N	=6B	−9N	=19B	+33N	=3B	−8N	−17B	4.5	43.0	45.0	18.75	1669	-10.4
28	Gantulga, Davaatulga	1598	MGL	+36B	−7N	+33B	+16B	=15N	−4N	−21B	+32N	−14B	4.5	42.0	46.0	20.25	1616	0.0
29	Htut Oo Lu	1640	MYA	=49N	+2B	−14N	−32B	−33B	+52N	+37B	+40N	−16N	4.5	35.0	35.5	15.75	1721	+10.4
30	Zhu, Yunyang	1666	CHN	+48B	−6N	−12B	−19N	−45B	+46N	+50N	+38B	=24N	4.5	32.5	34.0	12.00	1644	-4.8
31	Ouyang, Zishuo	0	CHN	−26B	−34N	+44B	+47N	−25B	=39N	+42B	−24B	+41N	4.5	32.0	34.0	13.75	749	0.0
32	Huang, Huanwen	0	CHN	=9B	=39N	=18B	+29N	−1B	=24B	+23N	−28B	−22N	4.0	42.0	45.5	19.25	1600	0.0
33	Zhang, Hongyi(BJ)	0	CHN	−10N	+52B	−28N	+42B	+29N	−27B	=24N	−14B	=38N	4.0	37.0	37.5	12.75	1473	0.0
34	Chiu, Duncan Ray	1466	HKG	−11N	+31B	+50N	−23B	−20N	−35B	+48N	−25N	+44B	4.0	34.0	35.5	11.00	892	-28.4
35	Qu, Jingce	0	CHN	−18B	=19N	−40B	=36N	+47B	+34N	+?B	−21N	−25B	4.0	33.5	33.5	10.50	1502	0.0
36	Xie, Xinao	0	CHN	−28N	+42B	−38N	=35B	−24N	+49B	−40N	+?B	=37B	4.0	29.5	29.5	9.00	1326	0.0
37	Ng Chi Hong	0	MAC	−27N	−38B	+?N	+51B	−22N	=40B	−29N	+48B	=36N	4.0	28.0	28.0	6.75	1342	0.0
38	Zhou, Chen(GD)	1504	CHN	−4B	+37N	+36B	=5B	−13N	−18N	=39B	−30N	=33B	3.5	40.0	43.5	15.00	1384	-21.2
39	Gombosuren, Sukhchuluun	0	MGL	=2N	=32B	−26N	+45B	−16N	=31B	=38N	−23B	=46N	3.5	37.0	39.5	13.75	1454	0.0
40	Kong, Shun Heng Nathan	0	HKG	−13N	−45B	+35N	+46B	−21B	=37N	+36B	−29B	−20N	3.5	35.0	37.5	12.50	901	0.0
41	Bi, Joshua	0	HKG	−3B	+46N	−8B	−20N	=43B	−?N	+52B	+44N	−31B	3.5	31.0	31.0	7.50	919	0.0
42	Le Minh	0	VIE	−7B	−36N	+48B	−33N	+46N	−43B	−31N	+51B	=49N	3.5	27.5	28.5	6.25	963	0.0
43	Zhao, Xu	0	CHN	−22B	F	=24N	−2B	=41N	+42N	+25B	−10B	−23N	3.0	40.0	40.0	12.75	1407	0.0
44	Liu, Yuchen(SC)	0	CHN	−15N	−5B	−31N	+49B	+50N	−10B	+47N	−41B	−34N	3.0	33.5	35.0	5.00	811	0.0
45	Tuvshin, Tsetsegdari	0	MGL	−21B	+40N	−25B	−39N	+30N	+51B	−10N	−22B	−?N	3.0	33.5	33.5	9.00	1307	0.0
46	Wang, Zeyu(SZ)	0	CHN	−23N	−41B	+52N	−40N	−42B	−30B	+51N	F	=39B	2.5	25.0	25.0	3.25	861	0.0
47	Zhong, Yonghao	0	CHN	+?N	−27B	−2N	−31B	−35N	F	−44B	F	+52B	2.0	25.0	25.0	0.50	1563	0.0
48	Tang, Zihao	0	CHN	−30N	−24B	−42N	=?B	=49N	+50B	−34B	−37N	F	2.0	24.0	24.0	2.25	1204	0.0
49	FIDE 8673020	0	—	=29B	−9N	−19B	−44N	=48B	−36N	F	F	=42B	1.5	30.0	30.0	5.00	1545	0.0
50	FIDE 8680744	0	—	F	−1N	−34B	−17N	−44B	−48N	−30B	+52N	=51N	1.5	27.5	27.5	1.00	819	0.0
51	FIDE 8644306	0	—	−25B	−17N	F	−37N	=52B	−45N	−46B	−42N	=50B	1.0	25.5	25.5	1.00	754	0.0
52	FIDE 8644217	0	—	−8B	−33N	−46B	F	=51N	−29B	−41N	−50B	−47N	0.5	25.0	25.0	0.50	891	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Xie, YuyangCHN
+104.0
6.5 pts · #6
2Cao, BanCHN
+77.2
7.0 pts · #9
3Mohd. Zain, Harith Kamil ZafriMAS
+67.6
6.0 pts · #5

Top rating losers

1Ding, ZhiyuanCHN
-94.8
5.5 pts · #21
2Xia, JinnanCHN
-47.6
5.5 pts · #4
3Yao, YichenCHN
-46.8
5.5 pts · #11

Biggest upsets

R7+264 Elo gap
Xie, Yuyang1706 beat Xia, Jinnan1970
R8+261 Elo gap
Xie, Yuyang1706 beat Zuo, Junyu1967
R9+239 Elo gap
Cao, Ban1728 beat Zuo, Junyu1967