40th National Age Group Chess Championships Under 20

Open SwissStandard

28 players participated in this 9-round tournament, held from 09 Dec 2025 to 13 Dec 2025 in Singapore, Singapore. 2 titled players from 7 federations. Top 10 Elo average was 1889, and top seed was Tuan An Tran (🇬🇺 GUM, CM, 2036).

Jai Adithya Gnanasekar (🇸🇬 SGP, 1875) won with 6.5/9, ahead of Meng Ren Morgan Chen (6.5) and Tze Shyan Evin Sung (6.5). Gnanasekar shared the lead from round 8, winning on tie-break.

The biggest upset came in round 1: Cheng Hao Soo (1664) beat Tuan An Tran (CM, 2036), a +372-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

🇬🇺CMTuan An Tran2036

Avg top 10

1,889

Participants

Titled players · 2

CM×2

Federations · 7 represented

🇸🇬Singapore×20

🇬🇺Guam×3

🇨🇳China×1

🇲🇾Malaysia×1

🇵🇭Philippines×1

🇮🇳India×1

🇺🇸United States of America×1

Top 3

🥇
Jai Adithya Gnanasekar
🇸🇬SGP·1875
6.5pts·1982perf+59.6
🥈
Meng Ren Morgan Chen
🇸🇬SGP·1930
6.5pts·1968perf+26.4
🥉
CMTze Shyan Evin Sung
🇸🇬SGP·2022
6.5pts·1968perf-8.5

How it unfolded

Top 6 · 9 rounds

Tight race until R5; 3 players tied at 6.5/9, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 3 at the finish.

Co-leaders

Gnanasekar6.5Chen6.5Sung6.5Leong6Ventura6Wang5.5

R6 · LEADER CHANGE11 Dec

Jyuin Pang Alexx Xander Leong takes the sole lead (5.0/6).

R9 · TIEBREAK CLUSTER

3 players finish on 6.5/9. Gnanasekar takes the title on Buchholz Cut1 (45.5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Jai Adithya Gnanasekar drew with Meng Ren Morgan Chen (White).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Jai Adithya Gnanasekar	*	½	½	0
2Meng Ren Morgan Chen	½	*	½	1
3CMTze Shyan Evin Sung	½	½	*	1
4Jyuin Pang Alexx Xander Leong	1	0	0	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Gnanasekar, Jai Adithya	1875	SGP	+25B	+12N	+5B	=2B	+7N	−4N	=13B	+8N	=3N	6.5	45.5	48.5	33.75	1982	+59.6
2	Chen, Meng Ren Morgan	1930	SGP	+16B	+6N	+4B	=1N	=3B	−5N	+11B	=10N	+13B	6.5	45.0	49.5	34.50	1968	+26.4
3	Sung, Tze Shyan EvinCM	2022	SGP	+15N	+14B	=10N	=13B	=2N	=11N	+6B	+4N	=1B	6.5	43.5	48.0	34.25	1968	-8.5
4	Leong, Jyuin Pang Alexx Xander	1855	SGP	+11N	+21B	−2N	+10B	+13N	+1B	=5N	−3B	=6N	6.0	45.5	49.0	30.25	1943	+44.8
5	Ventura, Gio Troy	1793	PHI	+27B	+19N	−1N	+8B	=10N	+2B	=4B	−13N	+11B	6.0	43.0	45.0	28.50	1834	+24.0
6	Yu, Kaiyi	1727	SGP	+9N	−2B	−11N	+26B	+19N	+7B	−3N	+21B	=4B	5.5	42.5	44.5	23.50	1780	+11.2
7	Tran, Tuan AnCM	2036	GUM	−21N	+8B	+23B	+17N	−1B	−6N	+12B	=9N	+10B	5.5	40.5	43.5	25.25	1814	-73.6
8	Ong, En Jie Jakin	1465	SGP	+18B	−7N	+12B	−5N	+17B	=10B	+14N	−1B	+23N	5.5	40.5	43.5	23.00	1842	+162.0
9	Wang, Zihao	0	SGP	−6B	=16N	+25B	+12N	=15N	+18B	−10N	=7B	+14N	5.5	38.5	41.5	23.75	1766	0.0
10	Liew, Tze Chi	1805	SGP	+20B	+23N	=3B	−4N	=5B	=8N	+9B	=2B	−7N	5.0	45.5	48.5	24.75	1770	-10.0
11	Aditya Sriram	1517	IND	−4B	+28N	+6B	=21N	+14N	=3B	−2N	+15B	−5N	5.0	43.0	43.5	20.00	1781	+98.4
12	Yu, Shuugo	1669	USA	+22N	−1B	−8N	−9B	+26N	+19B	−7N	+24B	+17B	5.0	37.5	39.5	16.50	1687	+0.8
13	Kapoor, Satvik	2027	SGP	F	=17N	+18B	=3N	−4B	+15B	=1N	+5B	−2N	4.5	44.0	44.0	23.00	1874	-56.4
14	Gan, Wei En Justin	1747	SGP	+28B	−3N	=17B	+16N	−11B	+24N	−8B	+18N	−9B	4.5	38.0	38.5	14.00	1686	-22.0
15	Chen, Ziyi Claire	1623	SGP	−3B	=27N	+19B	+20N	=9B	−13N	=18B	−11N	+25N	4.5	36.5	38.5	16.75	1642	-5.2
16	Tan, Sue Anne	1580	MAS	−2N	=9B	+22N	−14B	−24N	−23B	+26N	+19B	+21N	4.5	33.5	35.5	15.75	1476	-23.5
17	Chern, Ze Hearn	1748	SGP	+26N	=13B	=14N	−7B	−8N	+20B	=21N	=23B	−12N	4.0	35.5	37.5	13.75	1621	-57.2
18	Manjunathan Janani, Yokgan	1798	SGP	−8N	+26B	−13N	+27B	+21B	−9N	=15N	−14B	=20B	4.0	34.0	36.0	11.75	1589	-72.4
19	Yap, Jyan	0	SGP	+24N	−5B	−15N	+23B	−6B	−12N	+27B	−16N	+28N	4.0	33.5	34.0	8.50	1548	0.0
20	Loh, Magnus	1495	SGP	−10N	+24B	=21N	−15B	=23N	−17N	=22B	+28B	=18N	4.0	30.5	31.0	10.50	1595	+30.4
21	Soo, Cheng Hao	1664	SGP	+7B	−4N	=20B	=11B	−18N	+22N	=17B	−6N	−16B	3.5	38.5	42.0	15.50	1578	-40.0
22	Zhao, Kexuan	0	CHN	−12B	=25N	−16B	=28N	+27N	−21B	=20N	=26B	=24N	3.5	27.0	27.5	8.25	1479	0.0
23	Thoo, Jun Xue Tristan	1568	SGP	F	−10B	−7N	−19N	=20B	+16N	+24B	=17N	−8B	3.0	35.5	35.5	11.50	1626	+15.6
24	Combs, Noah	1673	GUM	−19B	−20N	=27B	+25N	+16B	−14B	−23N	−12N	=22B	3.0	31.5	33.5	10.25	1476	-75.6
25	Low, Hei Yuet Cheryl	1543	SGP	−1N	=22B	−9N	−24B	+28N	=26B	F	+27N	−15B	3.0	27.5	27.5	5.25	1462	-9.2
26	Lee, Kang Yu	0	SGP	−17B	−18N	+28B	−6N	−12B	=25N	−16B	=22N	F	2.0	31.5	32.0	3.75	1277	0.0
27	Sim, Guan Yee Cedric	1444	SGP	−5N	=15B	=24N	−18N	−22B	+28B	−19N	−25B	F	2.0	30.0	30.5	4.25	1447	-2.0
28	Padrique, Sarah Jennica	0	GUM	−14N	−11B	−26N	=22B	−25B	−27N	F	−20N	−19B	0.5	28.0	28.0	1.75	749	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Ong, En Jie JakinSGP
+162.0
5.5 pts · #6
2Aditya SriramIND
+98.4
5.0 pts · #11
3Gnanasekar, Jai AdithyaSGP
+59.6
6.5 pts · #1

Top rating losers

1Combs, NoahGUM
-75.6
3.0 pts · #22
2Tran, Tuan AnCMGUM
-73.6
5.5 pts · #7
3Manjunathan Janani, YokganSGP
-72.4
4.0 pts · #14

Biggest upsets

R1+372 Elo gap
Soo, Cheng Hao1664 beat CMTran, Tuan An2036
R1+333 Elo gap
Ong, En Jie Jakin1465 beat Manjunathan Janani, Yokgan1798
R6+309 Elo gap
Yu, Kaiyi1727 beat CMTran, Tuan An2036