19th Asian Schools Chess Championships 2025 - G11

Open SwissStandard

54 players participated in this 9-round tournament, held from 26 Oct 2025 to 31 Oct 2025 in Ulaanbaatar, Mongolia. 3 titled players from 8 federations. Top 10 Elo average was 1737, and top seed was Ider Tselmuun (🇲🇳 MGL, WCM, 1865).

Ider Tselmuun (🇲🇳 MGL, WCM, 1865) won with 7.5/9, ahead of Maryana Aleks Osipova (7.0) and Vo Mai Phuong (7.0). Tselmuun shared the lead from round 7 and broke clear in the final round.

The biggest upset came in round 8: Tseveensuren Naranjargal (1446) beat Haeun Yang (1706), a +260-point gap.

Location

🇲🇳Ulaanbaatar, Mongolia

Dates

26 Oct 2025 → 31 Oct 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇲🇳WCMIder Tselmuun1865

Avg top 10

1,737

Participants

Titled players · 3

WCM×3

Federations · 8 represented

🇲🇳Mongolia×39

🇻🇳Vietnam×3

🇰🇿Kazakhstan×3

🇷🇺Russia×1

🇹🇼Chinese Taipei×1

🇰🇬Kyrgyzstan×1

🇰🇷South Korea×1

🇺🇿Uzbekistan×1

Top 3

🥇
WCMIder Tselmuun
🇲🇳MGL·1865
7.5pts·1900perf+17.6
🥈
Maryana Aleks Osipova
🇷🇺RUS·1710
7.0pts·1819perf+41.6
🥉
Vo Mai Phuong
🇻🇳VIE·1596
7.0pts·1887perf+111.2

How it unfolded

Top 6 · 9 rounds

WCM Ider Tselmuun 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

Tselmuun7.5Phuong7Osipova7Nomunbileg7Mamesh6.5Filippova6.5

R9 · LEADER CHANGE31 Oct

WCM Ider Tselmuun takes the sole lead (7.5/9).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

WCM Ider Tselmuun drew with Vo Mai Phuong (White).

WIN STREAKS · 3 top finishers

WCM Ider Tselmuun 3 wins (R1–R3)Vo Mai Phuong 3 wins (R1–R3)Maryana Aleks Osipova 6 wins (R1–R6)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1WCMIder Tselmuun	*	½	1	½
2Vo Mai Phuong	½	*	0	—
3Maryana Aleks Osipova	0	1	*	—
4Purevsuren Nomunbileg	½	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Tselmuun, IderWCM	1865	MGL	+19N	+8B	+11N	=3B	+6N	=5B	+2B	=4N	+7N	7.5	51.5	56.5	46.25	1900	+17.6
2	Osipova, Maryana Aleks	1710	RUS	+26N	+22B	+9N	+6B	+7N	+3B	−1N	−5B	+8N	7.0	50.0	54.5	40.50	1819	+41.6
3	Vo Mai Phuong	1596	VIE	+49B	+31N	+5B	=1N	+12B	−2N	+13B	=6N	+11B	7.0	48.0	50.5	36.50	1887	+111.2
4	Nomunbileg, Purevsuren	1625	MGL	−33N	+42B	+36N	+45B	+30N	+16B	=7N	=1B	+5N	7.0	41.0	44.0	33.25	1977	+89.2
5	Filippova, MilanaWCM	1750	KAZ	+36N	+34B	−3N	+37B	+9N	=1N	+11B	+2N	−4B	6.5	48.0	52.0	34.25	1763	+3.2
6	Mamesh, AdiyaWCM	1757	KAZ	+10B	+46N	+13B	−2N	−1B	+41N	+12B	=3B	+14N	6.5	47.5	50.5	32.50	1807	+22.8
7	Mandukhai, Munkhbat	1585	MGL	+47N	+40B	+12N	+29B	−2B	=11N	=4B	+13N	−1B	6.0	45.5	48.5	27.75	1701	+34.8
8	Toktaalieva, Ayana	1519	KGZ	+39B	−1N	+38B	+31N	=13B	+15N	=14B	+10N	−2B	6.0	45.0	49.0	29.00	1641	+28.0
9	Iveelkhuslen, Ganchuluun	1562	MGL	+25B	+43N	−2B	+32N	−5B	+18N	−10B	+15N	+19B	6.0	43.5	47.0	27.50	1616	+13.2
10	Anandzaya Munkh-Ochir	0	MGL	−6N	+48B	+24N	−30B	+37N	+46B	+9N	−8B	+18B	6.0	39.0	42.0	25.50	1597	0.0
11	Munkhjin, Bold-erdene	1626	MGL	+42B	+18N	−1B	+41N	+14N	=7B	−5N	+16B	−3N	5.5	46.5	50.0	26.00	1690	+23.2
12	Munkh-Ayalguu, Dorjderem	1743	MGL	+38B	+35N	−7B	+20N	−3N	+19B	−6N	=23B	+22N	5.5	42.5	46.5	24.75	1556	-55.6
13	Burentushig, Renchinvanjil	1627	MGL	+50N	+33B	−6N	+26B	=8N	+30B	−3N	−7B	+23N	5.5	42.5	45.0	22.50	1482	-40.4
14	Tenuunbuyan Sukhbaatar	1817	MGL	−18B	+54N	+22B	+15N	−11B	+35N	=8N	+17B	−6B	5.5	42.5	43.5	23.50	1576	-56.0
15	Misheel, Myagmar	1562	MGL	+45N	=29B	+23N	−14B	+17N	−8B	+22N	−9B	+24N	5.5	40.5	43.5	24.00	1408	-28.8
16	Zhetpis Symbat	1764	KAZ	−22N	=50B	+21N	+40B	+29N	−4N	+25B	−11N	+28B	5.5	38.5	41.0	22.75	1548	-43.2
17	Kieu Ngan	1476	VIE	=32N	=24B	=40N	+23B	−15B	+44N	+27B	−14N	+25B	5.5	36.5	40.0	23.00	1509	0.0
18	Ujin, Bumshur	0	MGL	+14N	−11B	−30N	+47B	+24N	−9B	+46N	+21B	−10N	5.0	39.5	42.5	21.00	1620	0.0
19	Naranjargal, Tseveensuren	1446	MGL	−1B	+39N	−31B	+43N	+32B	−12N	+41B	+30N	−9N	5.0	38.5	42.0	19.00	1587	+29.6
20	Sangkaran, Ashreeya Rao	1518	MAS	=23N	=32B	+33N	−12B	−22N	+47B	−21N	+40B	+29N	5.0	35.0	38.0	18.75	796	-32.8
21	Burtegeljin, Javkhlan	1451	MGL	−43B	−25N	−16B	+52N	+49B	+45N	+20B	−18N	+31B	5.0	33.0	35.5	17.00	1643	+18.8
22	Agama, Enkhmandakh	0	MGL	+16B	−2N	−14N	+39B	+20B	=27N	−15B	+41N	−12B	4.5	42.5	46.0	20.25	1588	0.0
23	Misheelzaya, Soninbayar	0	MGL	=20B	+44N	−15B	−17N	+34N	+29B	=35B	=12N	−13B	4.5	39.0	42.5	18.75	1514	0.0
24	Mahmudova, Nilufar	1526	UZB	=44B	=17N	−10B	+25N	−18B	=26N	+42B	+37N	−15B	4.5	38.5	42.0	18.75	1500	-3.2
25	Ermuun, Purevbat	0	MGL	−9N	+21B	=34N	−24B	+33N	+40B	−16N	+35B	−17N	4.5	38.5	42.0	18.50	1490	-44.4
26	Ayalguu Amarbold	0	MGL	−2B	+51N	+46B	−13N	−27B	=24B	−29N	+43N	+42B	4.5	35.5	38.0	14.75	1430	0.0
27	Arvin, Davaa-Ochir	1503	MGL	−40N	+47B	−45N	+38B	+26N	=22B	−17N	=29B	=34N	4.5	33.0	36.0	17.75	1552	+2.8
28	Dagiimaa, Sodnom	1449	MGL	−29N	−45B	+48N	=33B	−40N	+50B	+32N	+34B	−16N	4.5	31.0	33.5	15.50	1659	+16.8
29	Urnuun Enkhtur	0	MGL	+28B	=15N	+41B	−7N	−16B	−23N	+26B	=27N	−20B	4.0	40.0	43.5	17.50	1501	0.0
30	Yang, Haeun	1706	KOR	+54B	−41N	+18B	+10N	−4B	−13N	F	−19B	+36N	4.0	40.0	41.0	16.00	739	-113.6
31	Oyun-erdene, Nyamdugar	0	MGL	+37N	−3B	+19N	−8B	−35N	+36B	F	+46B	−21N	4.0	39.0	42.0	16.00	1438	0.0
32	Orgiluun Munkhdul	0	MGL	=17B	=20N	+35B	−9B	−19N	=38N	−28B	+44N	=37B	4.0	38.0	41.5	16.75	1358	0.0
33	Bujinlkham Battur	0	MGL	+4B	−13N	−20B	=28N	−25B	+49N	−34N	+51B	=35N	4.0	37.0	39.5	16.25	1418	0.0
34	Munkhjin Gankhuyag	1509	MGL	+52B	−5N	=25B	−44N	−23B	+43N	+33B	−28N	=27B	4.0	35.5	38.0	14.50	1311	-35.6
35	Sender, Battsengel	1494	MGL	+51B	−12B	−32N	+42N	+31B	−14B	=23N	−25N	=33B	4.0	35.5	38.0	14.25	978	-9.2
36	Anu, Maitsetseg	0	MGL	−5B	+52N	−4B	−46N	+39B	−31N	+45B	+38N	−30B	4.0	35.5	38.0	13.50	855	0.0
37	Kung, Fan- Hsuan	1457	TPE	−31B	+49N	+43B	−5N	−10B	=42N	+44B	−24B	=32N	4.0	35.5	38.0	13.25	844	-21.6
38	FIDE 4927664	0	—	−12N	+53B	−8N	−27N	+51B	=32B	=40N	−36B	+47N	4.0	33.0	35.0	11.25	785	0.0
39	Misheel Altanshagai	0	MGL	−8N	−19B	+54B	−22N	−36N	−48B	+52N	+45B	+46N	4.0	31.0	32.0	9.50	1370	0.0
40	Nasantsetseg, Banzragchbaatar	0	MGL	+27B	−7N	=17B	−16N	+28B	−25N	=38B	−20N	=41B	3.5	39.5	43.0	15.50	1495	0.0
41	Bolor-Uyanga, Nyamragchaa	1451	MGL	+53N	+30B	−29N	−11B	+45N	−6B	−19N	−22B	=40N	3.5	36.0	38.0	10.75	1441	-4.4
42	Bolortungalag, Enkhbat	0	MGL	−11N	−4N	+52B	−35B	+53N	=37B	−24N	+47B	−26N	3.5	35.0	37.0	9.50	1168	-85.2
43	Tergelsaran Ganbaatar	0	MGL	+21N	−9B	−37N	−19B	=50N	−34B	+53N	−26B	+51N	3.5	33.5	35.5	10.75	1251	0.0
44	Maralgoo, Erdenebayar	0	MGL	=24N	−23B	+50N	+34B	−46N	−17B	−37N	−32B	+48N	3.5	32.5	35.0	11.75	1428	0.0
45	Gandi Undrakh	0	MGL	−15B	+28N	+27B	−4N	−41B	−21B	−36N	−39N	+54B	3.0	38.0	39.0	10.00	1385	0.0
46	Oyun-Erdene, Otgongerel	1525	MGL	+48N	−6B	−26N	+36B	+44B	−10N	−18B	−31N	−39B	3.0	37.5	40.5	10.50	960	-8.4
47	Enkhjin Bilegbadmaral	0	MGL	−7B	−27N	+51B	−18N	+54B	−20N	+48B	−42N	−38B	3.0	33.5	34.5	6.50	736	0.0
48	Maral-Ujin, Chuluunzurkh	0	MGL	−46B	−10N	−28B	−51N	+52B	+39N	−47N	+49B	−44B	3.0	29.0	31.5	9.00	708	0.0
49	Egshiglen Mijiddorj	0	MGL	−3N	−37B	=53N	=50B	−21N	−33B	+54N	−48N	=52B	2.5	30.0	31.0	4.50	698	0.0
50	Binderya Bilguun	0	MGL	−13B	=16N	−44B	=49N	=43B	−28N	−51B	=54B	=53N	2.5	29.5	30.5	7.25	1356	0.0
51	Nguyen Hoang Minh Vy	0	VIE	−35N	−26B	−47N	+48B	−38N	=53B	+50N	−33N	−43B	2.5	28.5	30.5	6.50	636	0.0
52	Nandingoo Batdelger	0	MGL	−34N	−36B	−42N	−21B	−48N	+54N	−39B	+53B	=49N	2.5	28.0	29.0	4.25	701	0.0
53	FIDE 4930835	0	—	−41B	−38N	=49B	=54N	−42B	=51N	−43B	−52N	=50B	2.0	24.5	25.5	4.25	651	0.0
54	FIDE 4932730	0	—	−30N	−14B	−39N	=53B	−47N	−52B	−49B	=50N	−45N	1.0	27.0	29.0	2.25	959	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Vo Mai PhuongVIE
+111.2
7.0 pts · #4
2Nomunbileg, PurevsurenMGL
+89.2
7.0 pts · #7
3Osipova, Maryana AleksRUS
+41.6
7.0 pts · #5

Top rating losers

1Yang, HaeunKOR
-113.6
4.0 pts · #43
2Bolortungalag, EnkhbatMGL
-85.2
3.5 pts · #38
3Tenuunbuyan SukhbaatarMGL
-56.0
5.5 pts · #17

Biggest upsets

R8+260 Elo gap
Naranjargal, Tseveensuren1446 beat Yang, Haeun1706
R2+255 Elo gap
Bolor-Uyanga, Nyamragchaa1451 beat Yang, Haeun1706
R5+191 Elo gap
Munkhjin, Bold-erdene1626 beat Tenuunbuyan Sukhbaatar1817