40th National Age Group Chess Championships Under 15

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65 players participated in this 9-round tournament, held from 09 Dec 2025 to 13 Dec 2025 in Singapore, Singapore. 1 titled players from 7 federations. Top 10 Elo average was 1754, and top seed was Jaivardhan Raj (🇮🇳 IND, CM, 1938).

Yen-Hsiu Elliot Wong (🇸🇬 SGP, 1921) won with 7.5/9, ahead of Xing Yu Felix Tan (7.0) and Adityan Vivek Amarnani (6.5). Wong shared the lead from round 6 and broke clear in the final round.

The biggest upset came in round 1: Zhi Xin Poon (1472) beat Jaivardhan Raj (CM, 1938), a +466-point gap.

Location

🇸🇬Singapore, Singapore

Dates

09 Dec 2025 → 13 Dec 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇮🇳CMJaivardhan Raj1938

Avg top 10

1,754

Participants

Titled players · 1

CM×1

Federations · 7 represented

🇸🇬Singapore×46

🇮🇳India×6

🇧🇷Brazil×1

🇨🇳China×1

🇲🇾Malaysia×1

🇵🇭Philippines×1

🇲🇲Myanmar×1

Top 3

🥇
Yen-Hsiu Elliot Wong
🇸🇬SGP·1921
7.5pts·1880perf-6.4
🥈
Xing Yu Felix Tan
🇸🇬SGP·1474
7.0pts·1907perf+171.6
🥉
Adityan Vivek Amarnani
🇧🇷BRA·1757
6.5pts·1783perf+17.6

How it unfolded

Top 6 · 9 rounds

Yen-Hsiu Elliot Wong led from R9; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R9.

Co-leaders

Wong7.5Tan7Amarnani6.5Yeo6.5Ng6Karl6

R9 · LEADER CHANGE13 Dec

Yen-Hsiu Elliot Wong takes the sole lead (7.5/9).

R7 · HEAD-TO-HEAD · WINNER VS 2ND

Yen-Hsiu Elliot Wong drew with Xing Yu Felix Tan (White).

WIN STREAKS · 2 top finishers

Yen-Hsiu Elliot Wong 3 wins (R4–R6)Xing Yu Felix Tan 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Yen-Hsiu Elliot Wong	*	½	½	—
2Xing Yu Felix Tan	½	*	½	—
3Adityan Vivek Amarnani	½	½	*	½
4Lucas Li Zhe Yeo	—	—	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Wong, Yen-Hsiu Elliot	1921	SGP	+33B	+23N	=6B	+17N	+9B	+5N	=2B	=3N	+7B	7.5	47.5	52.0	42.25	1880	-6.4
2	Tan, Xing Yu Felix	1474	SGP	+38N	+13B	+7N	+5B	+30B	=3N	=1N	=15B	=8N	7.0	47.5	52.0	39.25	1907	+171.6
3	Amarnani, Adityan Vivek	1757	BRA	+34N	+24B	=4N	+20B	+6N	=2B	=7N	=1B	=5B	6.5	49.0	53.5	37.00	1783	+17.6
4	Yeo, Lucas Li Zhe	1567	SGP	+53B	+35N	=3B	−9N	+17B	=13N	=18B	+21N	+12B	6.5	43.0	46.0	31.50	1771	+74.4
5	Ng, Jing Xuan Alyssa	1751	SGP	+19B	+47N	+22B	−2N	+13B	−1B	+31N	=8B	=3N	6.0	47.0	50.5	29.75	1714	-12.0
6	VELMURUGAN PRIYASUDHARSANA, ISHAAN HAENEETH	1574	IND	+56N	+43B	=1N	+15B	−3B	+21N	=12B	=14N	=9B	6.0	45.5	48.5	29.75	1824	+86.8
7	Karl, Sutanto	1691	SGP	+52B	+27N	−2B	+32N	+22B	+30N	=3B	=12N	−1N	6.0	45.5	48.5	28.00	1744	+20.0
8	Arul Thevar, Kethes	1602	SGP	=46B	+39N	−17B	+26N	+11B	=14N	+19B	=5N	=2B	6.0	44.0	47.5	31.50	1690	+32.0
9	Tan, Jun De Alexander	1580	SGP	+63N	=40B	+59N	+4B	−1N	−10B	+29N	+13B	=6N	6.0	43.0	44.5	26.00	1660	+28.4
10	Ting, Sheng Le Jireh	1605	SGP	+55B	+32N	+58B	−30N	=12B	+9N	−14B	=11N	+18B	6.0	40.0	42.5	26.75	1683	+27.6
11	Kuppusamy, Shivshankar	1532	SGP	−59N	+65B	+63N	=40B	−8N	+41B	+36N	=10B	+20N	6.0	33.5	34.0	20.50	1647	+32.0
12	Liew, Tze Hsien	1816	SGP	+44N	=25B	=40N	+24B	=10N	+20B	=6N	=7B	−4N	5.5	43.5	47.5	27.50	1640	-71.2
13	Lim, Josiah Zheng Xian	1579	SGP	+18B	−2N	+52B	+58N	−5N	=4B	+17B	−9N	+31B	5.5	43.0	45.5	23.25	1536	-16.0
14	Jaivardhan RajCM	1938	IND	−40N	+37B	=26N	+44B	+29N	=8B	+10N	=6B	F	5.5	42.0	46.0	28.00	1702	-70.0
15	Kapoor, Tanush	1805	SGP	−35B	+18N	+19B	−6N	+58B	+32N	+30B	=2N	F	5.5	42.0	44.5	25.00	1601	-57.2
16	Lee, Jia-En Elias	1560	SGP	−41N	+53B	=34N	+35B	=40N	−31B	+32N	=27B	+24N	5.5	36.0	39.0	23.75	1588	+11.6
17	Cheo, Kai En Joshua	1493	SGP	+45N	=20B	+8N	−1B	−4N	+60B	−13N	+35B	=25N	5.0	44.0	46.5	22.00	1555	+18.4
18	Foong, Kevan	0	SGP	−13N	−15B	+64N	+23N	+33B	+27B	=4N	=20B	−10N	5.0	43.0	44.0	21.25	1585	0.0
19	Shrenik Mallick	1421	IND	−5N	+64B	−15N	+28B	+37N	+24B	−8N	=25B	=27N	5.0	42.0	43.0	20.50	1560	+44.0
20	Liu, Muzhou	1599	SGP	+54B	=17N	+25B	−3N	+47B	−12N	+42B	=18N	−11B	5.0	40.5	43.5	20.50	1551	-18.0
21	Chua, Jia En Cherie	1604	SGP	+61N	−31B	=44N	+43B	+25N	−6B	+40N	−4B	=26N	5.0	39.0	41.5	20.00	1464	-54.4
22	Akshara Gobinath	1551	IND	+65N	+41B	−5N	+31B	−7N	−40B	+28N	+34B	−23N	5.0	39.0	39.5	18.50	1439	-36.4
23	Ng, Quan Zhu Caleb	1538	SGP	+28N	−1B	−43N	−18B	+57N	+49B	+44N	F	+22B	5.0	38.0	41.0	20.50	1770	+33.2
24	Loh, Zheng Yi Alfred	1532	SGP	+50B	−3N	+42B	−12N	+52B	−19N	+48B	+30N	−16B	5.0	38.0	41.0	18.50	1402	-32.4
25	Yashika Das	1536	SGP	+51B	=12N	−20N	+41B	−21B	=48N	+33B	=19N	=17B	5.0	37.5	41.0	21.50	1511	-10.8
26	Chan, Yao Hui Alden Nathanael	1504	SGP	+62B	−30N	=14B	−8B	−41N	+50N	+54B	+46N	=21B	5.0	35.0	37.0	17.25	1497	-4.4
27	Yang, Yunsen	1510	SGP	+42B	−7B	−60N	+53N	+54B	−18N	+52B	=16N	=19B	5.0	34.5	37.0	18.25	1435	-12.4
28	M Kathiravan, Sarrveash M Kathiravan	0	SGP	−23B	=33N	+55B	−19N	+46B	=47N	−22B	+52N	+42B	5.0	33.5	36.5	17.50	1259	0.0
29	Yeo, Emily Xiuhan	1551	SGP	+48B	−58N	+46B	=60N	−14B	+38N	−9B	=42N	+45B	5.0	33.5	36.0	18.75	840	-50.0
30	Kwah, Yan Yu Tristan	1652	SGP	+49N	+26B	+31N	+10B	−2N	−7B	−15N	−24B	=34N	4.5	43.5	47.0	21.25	1524	-56.0
31	Goh, Joseph	1487	SGP	+60B	+21N	−30B	−22N	+50B	+16N	−5B	=36B	−13N	4.5	39.5	42.0	18.75	1512	+8.0
32	Lu, Xinyu	1509	SGP	+57N	−10B	+38N	−7B	+43N	−15B	−16B	=41N	+48B	4.5	39.0	42.0	17.00	867	-48.4
33	Zhang, Dingxuan	1472	SGP	−1N	=28B	+45N	=37B	−18N	+43B	−25N	=49B	+60N	4.5	38.5	41.0	17.00	1377	-15.6
34	Kho, Wei-En	1442	SGP	−3B	+51N	=16B	=36N	−42B	+39N	+47B	−22N	=30B	4.5	38.0	41.5	18.75	1548	+30.4
35	Koh, Yi Jie Nicholas	1461	SGP	+15N	−4B	=36B	−16N	−48B	+55N	+59B	−17N	+50B	4.5	37.0	39.5	16.75	1456	-4.0
36	Mendoza, Kahel Alnitak	1600	PHI	−43N	+56B	=35N	=34B	+60B	=42N	−11B	=31N	=39B	4.5	35.0	37.5	16.50	1392	-46.0
37	Khor, Rui Ming Matthew	1552	MAS	=39B	−14N	+50B	=33N	−19B	=54N	=41B	=48N	+46B	4.5	34.0	37.0	16.75	1338	-33.6
38	Zwe Man Min	0	MYA	−2B	+54N	−32B	=46N	+61N	−29B	=58N	=44B	+49N	4.5	33.0	35.5	14.00	1239	0.0
39	Lin, Minghui	0	SGP	=37N	−8B	−49N	=45B	+63N	−34B	+62N	+58B	=36N	4.5	31.5	33.0	12.50	1445	0.0
40	Poon, Zhi Xin	1472	SGP	+14B	=9N	=12B	=11N	=16B	+22N	−21B	F	F	4.0	43.5	43.5	22.00	1695	+78.0
41	Krishn Prashant Khemka	0	IND	+16B	−22N	=47B	−25N	+26B	−11N	=37N	=32B	=44N	4.0	39.5	43.0	18.75	1480	0.0
42	Sim, Yan Rui	0	SGP	−27N	+61B	−24N	+49B	+34N	=36B	−20N	=29B	−28N	4.0	37.5	40.0	15.25	1413	0.0
43	Chua, Edith Yu Xin	0	SGP	+36B	−6N	+23B	−21N	−32B	−33N	=50B	+59N	=47B	4.0	36.5	39.0	15.50	1442	0.0
44	Wu, Qingan Alexander	1462	SGP	−12B	+48N	=21B	−14N	=59B	+53N	−23B	=38N	=41B	4.0	36.0	38.5	14.50	1383	-16.0
45	Yang, Yating	0	CHN	−17B	=55N	−33B	=39N	−53B	+65N	+56B	+47N	−29N	4.0	31.5	32.0	10.75	1314	0.0
46	Chen, Li Hui Caroline	0	SGP	=8N	=59B	−29N	=38B	−28N	+61B	+60N	−26B	−37N	3.5	35.0	37.5	11.50	1227	0.0
47	Khor, Tzer Kai	1512	SGP	+64N	−5B	=41N	+59B	−20N	=28B	−34N	−45B	=43N	3.5	35.0	36.0	10.00	797	-47.2
48	Lu, Xingyao	0	SGP	−29N	−44B	=61N	+65B	+35N	=25B	−24N	=37B	−32N	3.5	35.0	35.5	11.00	1355	0.0
49	Anay Varun Singh	0	IND	−30B	−50N	+39B	−42N	+51B	−23N	+53B	=33N	−38B	3.5	34.0	37.0	13.25	1281	0.0
50	FIDE 5835011	0	—	−24N	+49B	−37N	+63B	−31N	−26B	=43N	+61B	−35N	3.5	33.5	35.0	9.50	704	0.0
51	Marino Fuentes, Mateo	0	SGP	−25N	−34B	−56N	+64B	−49N	+63B	−61N	+62B	=58N	3.5	24.5	25.5	5.75	1186	0.0
52	Chia, Caleb	0	SGP	−7N	+57B	−13N	+56B	−24N	+62B	−27N	−28B	F	3.0	35.5	37.5	8.00	779	0.0
53	Hoo, Sheng Yi Sharisse	0	SGP	−4N	−16N	+62B	−27B	+45N	−44B	−49N	−57B	+61N	3.0	34.0	36.0	8.50	726	0.0
54	FIDE 5866030	0	—	−20N	−38B	+65N	+57B	−27N	=37B	−26N	=55B	−56N	3.0	33.0	33.5	7.25	1217	0.0
55	Au, Qi-En Claire	0	SGP	−10N	=45B	−28N	−61B	+64N	−35B	+65B	=54N	F	3.0	29.0	29.5	5.00	733	0.0
56	FIDE 5844711	0	—	−6B	−36N	+51B	−52N	−62N	+57B	−45N	F	+54B	3.0	29.0	29.0	9.50	787	0.0
57	FIDE 5830893	0	—	−32B	−52N	F	−54N	−23B	−56N	+64B	+53N	+59B	3.0	25.0	25.0	6.50	724	0.0
58	Wu, Qihan	1402	SGP	F	+29B	−10N	−13B	−15N	=59N	=38B	−39N	=51B	2.5	37.0	37.0	10.25	1441	+4.4
59	Neo, Jun Wei	0	SGP	+11B	=46N	−9B	−47N	=44N	=58B	−35N	−43B	−57N	2.5	34.5	37.0	11.00	1366	0.0
60	Zhou, Haoxuan	0	SGP	−31N	F	+27B	=29B	−36N	−17N	−46B	+63N	−33B	2.5	33.5	33.5	9.00	1325	0.0
61	FIDE 7143222	0	—	−21B	−42N	=48B	+55N	−38B	−46N	+51B	−50N	−53B	2.5	30.5	33.5	8.25	804	0.0
62	Xia, Yuhang Jerry	0	SGP	−26N	−63B	−53N	F	+56B	−52N	−39B	−51N	+65B	2.0	24.0	24.0	3.50	704	0.0
63	FIDE 5855039	0	—	−9B	+62N	−11B	−50N	−39B	−51N	F	−60B	=64N	1.5	29.0	29.0	2.50	756	0.0
64	FIDE 5882710	0	—	−47B	−19N	−18B	−51N	−55B	F	−57N	=65N	=63B	1.0	25.0	25.0	1.00	667	0.0
65	FIDE 5870445	0	—	−22B	−11N	−54B	−48N	F	−45B	−55N	=64B	−62N	0.5	27.5	27.5	0.50	742	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Tan, Xing Yu FelixSGP
+171.6
7.0 pts · #3
2VELMURUGAN PRIYASUDHARSANA, ISHAAN HAENEETHIND
+86.8
6.0 pts · #14
3Poon, Zhi XinSGP
+78.0
4.0 pts · #17

Top rating losers

1Liew, Tze HsienSGP
-71.2
5.5 pts · #5
2Jaivardhan RajCMIND
-70.0
5.5 pts · #6
3Kapoor, TanushSGP
-57.2
5.5 pts · #9

Biggest upsets

R1+466 Elo gap
Poon, Zhi Xin1472 beat CMJaivardhan Raj1938
R1+344 Elo gap
Koh, Yi Jie Nicholas1461 beat Kapoor, Tanush1805
R4+277 Elo gap
Tan, Xing Yu Felix1474 beat Ng, Jing Xuan Alyssa1751