ACC Double Weekends September 2025
Open SwissStandard
41 players participated in this 8-round tournament, held from 06 Sept 2025 to 14 Sept 2025 in Auckland, New Zealand. 4 titled players from 2 federations. Top 10 Elo average was 2021, and top seed was Alphaeus Wei Ern Ang (🇳🇿 NZL, FM, 2377).
Alphaeus Wei Ern Ang (🇳🇿 NZL, FM, 2377) won with 8.0/8, ahead of Daqi Mao (6.0) and Buthsara Hettiarachchi (6.0). Ang won solo starting round 4.
The biggest upset came in round 7: Aleksei Korolev (1524) beat Richard Jingjie Liu (1828), a +304-point gap.
Location
🇳🇿Auckland, New Zealand
Dates
06 Sept 2025 → 14 Sept 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 8 rounds
Titled players · 4
FM×2
CM×2
Federations · 2 represented
🇳🇿New Zealand×39
🇻🇳Vietnam×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 8 roundsFM Alphaeus Wei Ern Ang led from R4; +2.0-point edge over the runner-up.
Co-leaders
13
5
2
1
1
1
1
1
R4–R8 · LEAD HELD
FM Alphaeus Wei Ern Ang never relinquished the lead after R4; final gap +2.0 over the runner-up.
R4 · HEAD-TO-HEAD · WINNER VS 2ND
FM Alphaeus Wei Ern Ang beat FM Daqi Mao (Black).
WIN STREAKS · 3 top finishers
FM Alphaeus Wei Ern Ang 8 wins (R1–R8)FM Daqi Mao 3+3 wins (R1–R3, R5–R7)Buthsara Hettiarachchi 5 wins (R4–R8)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1FMAlphaeus Wei Ern Ang | * | 1 | 1 | 1 |
| 2FMDaqi Mao | 0 | * | — | 1 |
| 3Buthsara Hettiarachchi | 0 | — | * | — |
| 4Patrick Di Jiang | 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 | 2377 | NZL | +21B | +3N | +7B | +2N | +6B | +15N | +17B | +4N | 8.0 | 30.0 | 32.5 | 32.50 | 2815 | +8.7 |
| 2 | Mao, DaqiFM | 2182 | NZL | +25N | +4B | +11N | −1B | +28B | +7N | +6B | F | 6.0 | 27.5 | 27.5 | 19.50 | 2287 | +36.8 |
| 3 | Hettiarachchi, Buthsara | 1898 | NZL | +32N | −1B | −6N | +40B | +19N | +16B | +14N | +26B | 6.0 | 24.0 | 24.0 | 12.50 | 1907 | +13.2 |
| 4 | Jiang, Patrick Di | 1810 | NZL | +30B | −2N | =8B | +10N | =25B | +27N | +16B | −1B | 5.0 | 28.0 | 30.0 | 13.25 | 1810 | -2.0 |
| 5 | Korolev, Aleksei | 1524 | NZL | =6N | =9B | −14N | F | +35B | +23N | +15B | =13B | 4.5 | 20.5 | 20.5 | 12.25 | 1814 | +103.6 |
| 6 | Zhu, David Junyang | 1945 | NZL | =5B | +10N | +3B | F | −1N | +9B | −2N | F | 3.5 | 31.5 | 31.5 | 15.25 | 1947 | +4.4 |
| 7 | Liu, William RuiCM | 2062 | NZL | +27N | +14B | −1N | +9B | =11N | −2B | F | F | 3.5 | 26.0 | 26.0 | 10.25 | 2020 | -5.2 |
| 8 | Wang, Linyu | 1568 | NZL | −11N | +35B | =4N | −12B | +33N | +21B | −9N | −15B | 3.5 | 22.5 | 24.0 | 8.00 | 1611 | +7.6 |
| 9 | Fabay, Jenre Angelo | 1762 | NZL | F | =5N | +32B | −7N | +41B | −6N | +8B | −19B | 3.5 | 19.5 | 19.5 | 7.25 | 1642 | -39.6 |
| 10 | Vu Gia Hung | 1619 | VIE | F | −6B | +36N | −4B | =20N | +22B | −19N | +38N | 3.5 | 18.5 | 18.5 | 5.50 | 1476 | -38.8 |
| 11 | Baker, Ilias Angelo (Leo)CM | 2089 | NZL | +8B | +34N | −2B | +26N | =7B | F | F | F | 3.5 | 16.5 | 16.5 | 8.75 | 2026 | -2.2 |
| 12 | Barry, Jacob | 1602 | NZL | +18N | −31B | F | +8N | −14B | =30N | F | +37B | 3.5 | 14.5 | 14.5 | 8.50 | 1636 | +2.0 |
| 13 | Li, Olivia | 1639 | NZL | +39N | F | −15B | F | +22N | +29B | F | =5N | 3.5 | 12.0 | 12.0 | 6.75 | 1655 | +2.4 |
| 14 | Prince, Aidan | 1706 | NZL | +33B | −7N | +5B | F | +12N | F | −3B | −17N | 3.0 | 22.0 | 22.0 | 9.50 | 1742 | +4.4 |
| 15 | Liu, Richard Jingjie | 1828 | NZL | F | +29B | +13N | F | F | −1B | −5N | +8N | 3.0 | 21.5 | 21.5 | 9.00 | 1786 | -11.2 |
| 16 | Zhao, Yuanyi (Rebecca) | 1542 | NZL | −17B | +40N | +34B | F | +29B | −3N | −4N | −18B | 3.0 | 20.5 | 20.5 | 3.50 | 1717 | +37.2 |
| 17 | Crack, Malcolm | 1984 | NZL | +16N | F | +23B | F | F | F | −1N | +14B | 3.0 | 16.5 | 16.5 | 8.50 | 2034 | +12.8 |
| 18 | Kirschbaum, Frank | 0 | NZL | −12B | F | +20N | F | =23B | −28N | =32B | +16N | 3.0 | 15.5 | 15.5 | 8.00 | 1594 | 0.0 |
| 19 | Zhang, Lucas | 1478 | NZL | F | F | F | F | −3B | +36N | +10B | +9N | 3.0 | 14.0 | 14.0 | 8.00 | 1868 | +58.8 |
| 20 | Degapudi, Tamoghna Reddy | 1479 | NZL | F | −28N | −18B | +39N | =10B | =34N | +33B | F | 3.0 | 11.5 | 11.5 | 4.00 | 1556 | +9.6 |
| 21 | Kirschbaum, Asher | 1591 | NZL | −1N | F | =33B | F | +34B | −8N | −22N | +39B | 2.5 | 17.0 | 17.0 | 2.25 | 1623 | +0.8 |
| 22 | Konduri, Rishi | 0 | NZL | =23B | −25N | +24N | F | −13B | −10N | +21B | F | 2.5 | 16.5 | 16.5 | 6.25 | 1556 | 0.0 |
| 23 | Hettiarachchi, Kisara | 1694 | NZL | =22N | +38B | −17N | =27B | =18N | −5B | F | F | 2.5 | 15.5 | 15.5 | 4.25 | 1536 | -36.0 |
| 24 | Lin, Xin (Oliver) | 1558 | NZL | −31N | F | −22B | F | −32N | =33B | +39N | +36B | 2.5 | 8.5 | 8.5 | 1.75 | 924 | -26.8 |
| 25 | Prince, Aaron | 1587 | NZL | −2B | +22B | F | F | =4N | F | −26N | =35B | 2.0 | 17.0 | 17.0 | 5.75 | 1556 | -11.2 |
| 26 | Sun, Oliver | 1764 | NZL | +35N | F | F | −11B | F | F | +25B | −3N | 2.0 | 13.0 | 13.0 | 3.50 | 1752 | -2.4 |
| 27 | Wang, Ethan Zhirui | 1564 | NZL | −7B | =33N | +40B | =23N | F | −4B | F | F | 2.0 | 12.5 | 12.5 | 2.00 | 1549 | -3.6 |
| 28 | Xu, Jeremy Xi | 1745 | NZL | F | +20B | F | F | −2N | +18B | F | F | 2.0 | 12.0 | 12.0 | 6.00 | 1817 | +4.0 |
| 29 | Korolev, Maksim | 1620 | NZL | +36B | −15N | +37B | F | −16N | −13N | F | F | 2.0 | 11.5 | 11.5 | 2.00 | 1420 | -40.8 |
| 30 | Bhatia, Maan | 1463 | NZL | −4N | +39B | =38N | F | F | =12B | F | F | 2.0 | 9.0 | 9.0 | 2.00 | 1486 | +2.0 |
| 31 | Jin, Yanbo | 2034 | NZL | +24B | +12N | F | F | F | F | F | F | 2.0 | 6.0 | 6.0 | 6.00 | 2433 | +6.4 |
| 32 | Nguyen, Kane | 1492 | NZL | −3B | F | −9N | −34N | +24B | F | =18N | F | 1.5 | 16.5 | 16.5 | 4.00 | 1530 | +3.6 |
| 33 | Li, Hanxiao Lucas | 1457 | NZL | −14N | =27B | =21N | F | −8B | =24N | −20N | F | 1.5 | 16.5 | 16.5 | 3.50 | 1386 | 0.0 |
| 34 | Hoang, Lucas | 1688 | NZL | F | −11B | −16N | +32B | −21N | =20B | F | F | 1.5 | 13.5 | 13.5 | 3.00 | 1490 | -56.0 |
| 35 | Iyer, Agastya Shankar | 1440 | NZL | −26B | −8N | +39B | F | −5N | F | −36B | =25N | 1.5 | 13.0 | 13.0 | 1.00 | 1289 | -24.4 |
| 36 | Chen, Yunhan | 0 | NZL | −29N | F | −10B | F | F | −19B | +35N | −24N | 1.0 | 12.5 | 12.5 | 1.50 | 1295 | 0.0 |
| 37 | Zhang, Huaicheng | 1443 | NZL | F | F | −29N | F | F | F | +38B | −12N | 1.0 | 6.0 | 6.0 | 0.50 | 1421 | -4.0 |
| 38 | Liang, David Ye Cheng | 0 | NZL | F | −23N | =30B | F | F | F | −37N | −10B | 0.5 | 9.0 | 9.0 | 1.00 | 1230 | -34.4 |
| 39 | FIDE 80874207 | 0 | — | −13B | −30N | −35N | −20B | F | F | −24B | −21N | 0.0 | 15.0 | 15.0 | 0.00 | 727 | 0.0 |
| 40 | Shashidhara, Pragyan | 0 | NZL | F | −16B | −27N | −3N | F | F | F | F | 0.0 | 12.5 | 12.5 | 0.00 | 867 | 0.0 |
| 41 | Menon, Adishankar | 0 | NZL | F | F | F | F | −9N | F | F | F | 0.0 | 3.5 | 3.5 | 0.00 | 959 | -5.6 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Korolev, AlekseiNZL+103.64.5 pts · #5
- 2Zhang, LucasNZL+58.83.0 pts · #16
- 3Zhao, Yuanyi (Rebecca)NZL+37.23.0 pts · #18
Top rating losers
- 1Hoang, LucasNZL-56.01.5 pts · #25
- 2Korolev, MaksimNZL-40.82.0 pts · #29
- 3Fabay, Jenre AngeloNZL-39.63.5 pts · #6
Biggest upsets
- R7+304 Elo gap
- R8+284 Elo gap
- R6+170 Elo gap