ACC Double Weekends May 2025

Open SwissStandard

39 players participated in this 8-round tournament, held from 10 May 2025 to 18 May 2025 in Auckland, New Zealand. 4 titled players from 3 federations. Top 10 Elo average was 1924, and top seed was Alphaeus Wei Ern Ang (🇳🇿 NZL, FM, 2363).

Alphaeus Wei Ern Ang (🇳🇿 NZL, FM, 2363) won with 8.0/8, ahead of Preeyansh Roul (6.0) and Raphael Puddu Abrigo (5.5). Ang won solo starting round 4.

The biggest upset came in round 4: Maksim Korolev (1432) beat Luna Yuexiu Xu (WCM, 1845), a +413-point gap.

Location

🇳🇿Auckland, New Zealand

Dates

10 May 2025 → 18 May 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 8 rounds

Top seed

🇳🇿FMAlphaeus Wei Ern Ang2363

Avg top 10

1,924

Participants

Titled players · 4

FM×1

CM×2

WCM×1

Federations · 3 represented

🇳🇿New Zealand×35

🇫🇷France×1

🇷🇸Serbia×1

Top 3

🥇
FMAlphaeus Wei Ern Ang
🇳🇿NZL·2363
8.0pts·2763perf+12.8
🥈
Preeyansh Roul
🇳🇿NZL·1874
6.0pts·1965perf+41.2
🥉
Raphael Puddu Abrigo
🇫🇷FRA·1928
5.5pts·1898perf-4.0

How it unfolded

Top 6 · 8 rounds

FM Alphaeus Wei Ern Ang led from R4; +2.0-point edge over the runner-up.

Co-leaders

Ang8Roul6Jin5.5Puddu Abrigo5.5Baker5.5Ha5

R4–R8 · LEAD HELD

FM Alphaeus Wei Ern Ang never relinquished the lead after R4; final gap +2.0 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

FM Alphaeus Wei Ern Ang beat Preeyansh Roul (Black).

WIN STREAKS · 2 top finishers

FM Alphaeus Wei Ern Ang 8 wins (R1–R8)Preeyansh Roul 3 wins (R6–R8)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMAlphaeus Wei Ern Ang	*	1	—	1
2Preeyansh Roul	0	*	0	1
3Yanbo Jin	—	1	*	—
4Raphael Puddu Abrigo	0	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	Pts	Bu C1	Bu	SB	Perf	Δ
1	Ang, Alphaeus Wei ErnFM	2363	NZL	+30N	+23B	+2N	+3B	+7N	+5B	+9N	+8B	8.0	33.5	35.5	35.50	2763	+12.8
2	Preeyansh Roul	1874	NZL	+13B	+17N	−1B	+31N	−4B	+23N	+20B	+3N	6.0	34.0	35.5	22.00	1965	+41.2
3	Puddu Abrigo, Raphael	1928	FRA	+26B	+7N	+14B	−1N	=19N	+10B	+22N	−2B	5.5	34.0	37.0	21.25	1898	-4.0
4	Jin, Yanbo	1979	NZL	+20B	=21N	−22B	+27N	+2N	−18B	+7N	+10B	5.5	29.5	32.5	23.25	1830	-45.2
5	Baker, Ilias Angelo (Leo)CM	1952	NZL	+32N	=8B	+29N	+9B	F	−1N	+31B	+14N	5.5	26.0	26.0	15.75	2004	+11.6
6	Ha, Timothy Huy Minh	1757	NZL	−16N	+25B	+8N	=10B	−9N	+24B	+17N	=22B	5.0	28.0	31.0	18.50	1719	-6.8
7	Sun, Oliver	1640	NZL	+19B	−3B	+16N	+20N	−1B	=31N	−4B	+30N	4.5	32.0	33.5	13.75	1745	+30.0
8	Grubic, Bogdan	1716	SRB	+36B	=5N	−6B	+30N	−11B	+21N	+19B	−1N	4.5	32.0	32.5	12.25	1785	+28.8
9	Hettiarachchi, Buthsara	1840	NZL	+12B	+39N	=11B	−5N	+6B	+19N	−1B	F	4.5	31.0	31.0	15.25	1857	+10.4
10	Nimmakayala, Srirama Vikhyath	1589	NZL	+37B	−14N	+28B	=6N	+21B	−3N	+23B	−4N	4.5	29.0	29.0	11.50	1784	+64.8
11	Somaraju, Sai Vivan KarthikeyaCM	1904	NZL	+24N	+16B	=9N	−22B	+8N	+17B	−18N	F	4.5	27.5	27.5	17.75	1767	-38.0
12	Wang, Linyu	1512	NZL	−9N	−20N	=26B	+32B	+27N	=15B	+24N	=13N	4.5	25.5	27.0	13.25	1616	+43.6
13	Guo, Anne Xuduo	1518	NZL	−2N	+38B	−23N	−15B	+36N	+33B	+29N	=12B	4.5	21.5	21.5	6.25	1613	+28.4
14	Xu, Luna YuexiuWCM	1845	NZL	+25N	+10B	−3N	−19B	−24N	+16B	+15N	−5B	4.0	30.0	33.0	15.50	1618	-70.6
15	Nguyen, Kane	1473	NZL	−21B	+26N	−17B	+13N	=20B	=12N	−14B	+28B	4.0	27.0	29.5	14.00	1599	+51.2
16	Van der Maas, Matthias	1500	NZL	+6B	−11N	−7B	+37N	−31B	−14N	+32B	+23N	4.0	24.0	24.0	9.50	1669	+51.6
17	Barry, Jacob	1584	NZL	+38N	−2B	+15N	+23B	F	−11N	−6B	+31N	4.0	24.0	24.0	8.50	1722	+19.4
18	Wang, Zi Yao (kelvin)	1794	NZL	F	+27N	+21B	F	F	+4N	+11B	F	4.0	16.5	16.5	16.50	2601	+82.0
19	Korolev, Maksim	1432	NZL	−7N	+24B	F	+14N	=3B	−9B	−8N	+29B	3.5	28.0	29.5	11.75	1699	+85.2
20	Hettiarachchi, Kisara	1556	NZL	−4N	+12B	+37N	−7B	=15N	+25B	−2N	F	3.5	27.5	27.5	9.50	1612	+9.2
21	Jiang, Patrick Di	1736	NZL	+15N	=4B	−18N	+29B	−10N	−8B	−30B	+37N	3.5	26.5	26.5	8.75	1561	-66.0
22	Li, Olivia	1699	NZL	F	+35B	+4N	+11N	F	F	−3B	=6N	3.5	21.0	21.0	13.00	1943	+65.2
23	Zhou, Martin	1755	NZL	+28B	−1N	+13B	−17N	+25N	−2B	−10N	−16B	3.0	34.0	36.5	10.00	1572	-81.6
24	Zhao, Yuanyi (Rebecca)	1523	NZL	−11B	−19N	+38B	+28N	+14B	−6N	−12B	−25N	3.0	27.0	27.0	6.50	1482	-22.8
25	Tai, Ethan	1518	NZL	−14B	−6N	+32N	F	−23B	−20N	+35B	+24B	3.0	20.5	20.5	5.00	1575	+8.0
26	Holland, David	1539	NZL	−3N	−15B	=12N	+35B	−33N	−27B	+37N	=32B	3.0	20.5	20.5	3.50	1437	-22.0
27	Korolev, Aleksei	1604	NZL	=35N	−18B	+36N	−4B	−12B	+26N	=34B	F	3.0	19.0	19.0	4.25	1539	-24.8
28	Xu, Vera Jintian	1499	NZL	−23N	+32B	−10N	−24B	+37B	−29N	=36B	−15N	2.5	18.5	18.5	1.75	1320	-62.8
29	Degapudi, Tamoghna Reddy	1509	NZL	F	+33N	−5B	−21N	F	+28B	−13B	−19N	2.0	21.0	21.0	4.00	1510	-4.4
30	Torres, Juan Paolo	1562	NZL	−1B	F	+35N	−8B	F	F	+21N	−7B	2.0	21.0	21.0	4.00	1629	+5.6
31	Song, Quinn	1581	NZL	F	F	F	−2B	+16N	=7B	−5N	−17B	1.5	24.0	24.0	6.25	1566	-8.0
32	Bhatt, Mitesh	1546	NZL	−5B	−28N	−25B	−12N	F	+37B	−16N	=26N	1.5	22.5	22.5	1.50	1190	-90.8
33	Hoang, Lucas	1714	NZL	=34N	−29B	F	F	+26B	−13N	F	F	1.5	14.0	14.0	3.50	1414	-63.6
34	Tang, Kevin	1435	NZL	=33B	F	F	F	F	F	=27N	F	1.0	4.5	4.5	2.25	1652	+11.0
35	Lin, Xin (Oliver)	1408	NZL	=27B	−22N	−30B	−26N	F	F	−25N	F	0.5	14.5	14.5	1.50	1225	-32.0
36	Liang, David Ye Cheng	1459	NZL	−8N	F	−27B	F	−13B	F	=28N	F	0.5	14.5	14.5	1.25	1260	-34.8
37	Sun, Brooklyn	0	NZL	−10N	F	−20B	−16B	−28N	−32N	−26B	−21B	0.0	22.5	22.5	0.00	767	0.0
38	FIDE 4330714	0	—	−17B	−13N	−24N	F	F	F	F	F	0.0	11.5	11.5	0.00	744	0.0
39	FIDE 4331265	0	—	F	−9B	F	F	F	F	F	F	0.0	9.0	9.0	0.00	1039	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Korolev, MaksimNZL
+85.2
3.5 pts · #18
2Wang, Zi Yao (kelvin)NZL
+82.0
4.0 pts · #11
3Li, OliviaNZL
+65.2
3.5 pts · #16

Top rating losers

1Bhatt, MiteshNZL
-90.8
1.5 pts · #34
2Zhou, MartinNZL
-81.6
3.0 pts · #22
3Xu, Luna YuexiuWCMNZL
-70.6
4.0 pts · #13

Biggest upsets

R4+413 Elo gap
Korolev, Maksim1432 beat WCMXu, Luna Yuexiu1845
R5+322 Elo gap
Zhao, Yuanyi (Rebecca)1523 beat WCMXu, Luna Yuexiu1845
R3+280 Elo gap
Li, Olivia1699 beat Jin, Yanbo1979