Oceania Youth Chess Championships 2026 Under 8 - Under 20 Girls

Open SwissStandard

40 players participated in this 9-round tournament, held from 09 Apr 2026 to 13 Apr 2026 in Christchurch, New Zealand. 7 titled players from 4 federations. Top 10 Elo average was 1806, and top seed was Alaina Vincent (🇦🇺 AUS, WFM, 1928).

Alaina Vincent (🇦🇺 AUS, WFM, 1928) won with 7.0/9, ahead of Emily Cathay Gan (6.5) and Wanyao Sarah Sun (6.5). Vincent shared the lead from round 5 and won solo starting round 6.

The biggest upset came in round 6: Senudi De Vas (1507) beat Sophia Zilan Lin (1707), a +200-point gap.

Location

🇳🇿Christchurch, New Zealand

Dates

09 Apr 2026 → 13 Apr 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇦🇺WFMAlaina Vincent1928

Avg top 10

1,806

Participants

Titled players · 7

WFM×2

WCM×5

Federations · 4 represented

🇳🇿New Zealand×20

🇦🇺Australia×13

🇻🇺Vanuatu×3

🇹🇴Tonga×2

Top 3

🥇
WFMAlaina Vincent
🇦🇺AUS·1928
7.0pts·1974perf+13.8
🥈
WCMEmily Cathay Gan
🇳🇿NZL·1799
6.5pts·1901perf+16.0
🥉
WCMWanyao Sarah Sun
🇳🇿NZL·1893
6.5pts·1913perf+19.6

How it unfolded

Top 6 · 9 rounds

WFM Alaina Vincent led from R6; +0.5-point edge over the runner-up.

Co-leaders

Vincent7Sun6.5Gan6.5Thurner6Xu6Feng6

R6 · LEADER CHANGE11 Apr

WFM Alaina Vincent takes the sole lead (5.5/6).

R8 · HEAD-TO-HEAD · WINNER VS 2ND

WFM Alaina Vincent drew with WCM Wanyao Sarah Sun (White).

WIN STREAKS · 2 top finishers

WFM Alaina Vincent 3 wins (R4–R6)WCM Wanyao Sarah Sun 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1WFMAlaina Vincent	*	½	½	1
2WCMWanyao Sarah Sun	½	*	0	1
3WCMEmily Cathay Gan	½	1	*	½
4WFMAnya Thurner	0	0	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Vincent, AlainaWFM	1928	AUS	+17N	+6B	=2N	+8B	+4N	+5B	=7N	=3B	=9N	7.0	49.0	54.0	41.50	1974	+13.8
2	Gan, Emily CathayWCM	1799	NZL	+31B	+13N	=1B	=11N	+17B	+3N	=5B	=4N	=6B	6.5	47.5	50.5	35.25	1901	+16.0
3	Sun, Wanyao SarahWCM	1893	NZL	+25N	+21B	+16N	+4B	−5N	−2B	+8N	=1N	+11B	6.5	46.5	50.5	34.50	1913	+19.6
4	Thurner, AnyaWFM	1899	NZL	+38B	+9N	+11B	−3N	−1B	+13N	+10B	=2B	=5N	6.0	49.0	51.0	31.25	1863	-6.8
5	Xu, Luna YuexiuWCM	1831	NZL	+23N	+20B	+12N	=7B	+3B	−1N	=2N	=6B	=4B	6.0	48.0	52.5	33.25	1876	-1.2
6	Yue, Annie	1672	NZL	+27N	−1N	+18B	=12B	=8N	+17B	+15B	=5N	=2N	6.0	45.5	49.5	30.50	1754	+33.6
7	Feng, SophiaWCM	1846	NZL	+18B	=10N	+14B	=5N	+13B	=15N	=1B	−11N	+16B	6.0	45.0	49.5	32.00	1803	-11.6
8	De Vas, Senudi	1507	AUS	+32B	=14N	+10B	−1N	=6B	+19N	−3B	+18N	+22B	6.0	44.0	47.0	28.00	1752	+82.8
9	Wang, Linyu	1625	NZL	+40N	−4B	=25N	+22B	=11B	+18N	=14B	+12N	=1B	6.0	42.0	44.0	27.25	1733	+41.2
10	Guo, Anne Xuduo	1575	NZL	+35N	=7B	−8N	+29B	+19N	=16B	−4N	+15B	+14B	6.0	41.0	44.0	26.50	1764	+75.2
11	Yu, Weiyang CadenceWCM	1784	NZL	+30N	+15B	−4N	=2B	=9N	=12B	+21N	+7B	−3N	5.5	46.0	49.5	28.00	1775	+0.4
12	Rehansi, D P Sayuni Vonara	1535	NZL	+29N	+19B	−5B	=6N	=14B	=11N	+20N	−9B	+21N	5.5	42.0	45.5	25.25	1756	+104.0
13	Wang, Adelyn	1539	AUS	+36N	−2B	+27N	+16B	−7N	−4B	=23N	+17B	+19N	5.5	41.5	44.0	23.25	1709	+54.4
14	Selva Muthukumar, Sahasra	1697	AUS	+39N	=8B	−7N	+25B	=12N	+20B	=9N	=16B	−10N	5.0	43.0	45.0	21.75	1632	-29.6
15	Zhou, Adele	1541	NZL	+24B	−11N	+26B	=19B	+21N	=7B	−6N	−10N	+27B	5.0	41.0	45.0	22.25	1578	+10.8
16	Liyanage, Nithuli	1673	AUS	+34B	+33N	−3B	−13N	+26B	=10N	+22B	=14N	−7N	5.0	40.5	43.5	20.00	1470	-50.8
17	Liang, Nancy	1496	NZL	−1B	+34N	+30B	+20B	−2N	−6N	+31B	−13N	+26B	5.0	40.0	43.0	18.00	1547	+7.2
18	Ong, Yun Li (Charlotte)	1466	AUS	−7N	+39B	−6N	+30B	+24N	−9B	+27N	−8B	=20N	4.5	40.5	42.5	16.25	1426	-14.8
19	Lin, Sophia Zilan	1707	NZL	+22B	−12N	+38B	=15N	−10B	−8B	+32N	+24N	−13B	4.5	40.0	42.0	16.50	1337	-114.8
20	Li, Fiona Chenxi	1589	NZL	+26B	−5N	+33B	−17N	+28B	−14N	−12B	+25N	=18B	4.5	38.0	41.0	17.25	1401	-61.6
21	Guha, Shanaya	1638	AUS	+28B	−3N	=22B	+32N	−15B	+25N	−11B	+31N	−12B	4.5	38.0	41.0	16.25	1485	-49.2
22	Addagada, Janvi	0	NZL	−19N	+40B	=21N	−9N	+32B	+29B	−16N	+23B	−8N	4.5	37.0	39.0	15.25	1480	0.0
23	Xu, Vera Jintian	1444	NZL	−5B	−24N	+34B	−28N	+39B	+33N	=13B	−22N	+29B	4.5	34.0	36.0	14.25	1685	+46.8
24	Simic, Fedra	0	AUS	−15N	+23B	−29N	+31N	−18B	+26N	=25B	−19B	+33N	4.5	33.0	36.0	16.50	1406	0.0
25	Zuo, Sarah	1470	AUS	−3B	+28N	=9B	−14N	+33N	−21B	=24N	−20B	+31B	4.0	38.0	41.0	15.25	1449	-11.2
26	Sethuramalingam, Niranjana	0	NZL	−20N	+35B	−15N	+27B	−16N	−24B	+29N	+30B	−17N	4.0	35.0	38.0	14.00	1317	0.0
27	Lomu, Mohe	0	TGA	−6B	+31N	−13B	−26N	+38B	+34N	−18B	+28N	−15N	4.0	35.0	37.0	12.00	1398	0.0
28	Mao, Xiangyi	0	AUS	−21N	−25B	+36N	+23B	−20N	−31N	+33B	−27B	+35N	4.0	30.5	33.0	13.00	1277	0.0
29	Wang, Charlotte	0	AUS	−12B	=32N	+24B	−10N	+35B	−22N	−26B	+34N	−23N	3.5	35.0	38.0	12.00	718	-55.2
30	Brunsden, Mila	0	NZL	−11B	+37B	−17N	−18N	−31B	+38N	=34B	−26N	+39N	3.5	29.5	31.5	8.00	1477	0.0
31	Wang, Jennifer (yuxian)	1441	AUS	−2N	−27B	+40N	−24B	+30N	+28B	−17N	−21B	−25N	3.0	36.0	38.0	9.50	811	-48.0
32	Zhou, Guangzhao (allison)	0	NZL	−8N	=29B	+37N	−21B	−22N	+35N	−19B	−33N	=34B	3.0	32.0	34.5	8.75	1426	0.0
33	Steggles, Betsy	0	NZL	+37N	−16B	−20N	+38N	−25B	−23B	−28N	+32B	−24B	3.0	32.0	34.0	7.50	1409	0.0
34	Helu, Hinavakamea	0	TGA	−16N	−17B	−23N	+37B	+36N	−27B	=30N	−29B	=32N	3.0	31.0	33.5	8.25	1288	0.0
35	FIDE 573002615	0	—	−10B	−26N	+39N	=36B	−29N	−32B	=37N	+40B	−28B	3.0	27.5	29.5	6.50	1435	0.0
36	FIDE 110111507	0	—	−13B	−38N	−28B	=35N	−34B	−40N	+39B	+37B	F	2.5	24.0	24.0	6.00	1512	0.0
37	Lukai Marguerite	1536	VAN	−33B	−30N	−32B	−34N	+40B	=39N	=35B	−36N	=38B	2.5	22.0	24.0	5.50	1485	-5.6
38	Enock Cateleya	1484	VAN	−4N	+36B	−19N	−33B	−27N	−30B	−40N	=39B	=37N	2.0	28.0	30.0	4.75	1460	-9.2
39	Enock Mathilde	0	VAN	−14B	−18N	−35B	+40B	−23N	=37B	−36N	=38N	−30B	2.0	27.5	29.5	4.25	1286	-50.0
40	Pabla, Arya	0	AUS	−9B	−22N	−31B	−39N	−37N	+36B	+38B	−35N	F	2.0	25.5	25.5	4.50	1272	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Rehansi, D P Sayuni VonaraNZL
+104.0
5.5 pts · #7
2De Vas, SenudiAUS
+82.8
6.0 pts · #12
3Guo, Anne XuduoNZL
+75.2
6.0 pts · #9

Top rating losers

1Lin, Sophia ZilanNZL
-114.8
4.5 pts · #26
2Li, Fiona ChenxiNZL
-61.6
4.5 pts · #29
3Wang, CharlotteAUS
-55.2
3.5 pts · #40

Biggest upsets

R6+200 Elo gap
De Vas, Senudi1507 beat Lin, Sophia Zilan1707
R2+172 Elo gap
Rehansi, D P Sayuni Vonara1535 beat Lin, Sophia Zilan1707
R9+168 Elo gap
Wang, Adelyn1539 beat Lin, Sophia Zilan1707