6th ASEAN Individual Open Chess Championship Governor Henry S Oaminal Cup
SwissStandard
39 players participated in this 9-round tournament, held from 02 Nov 2025 to 08 Nov 2025 in Ozamiz City, Misamis Occidental, Philippines, Philippines. 33 titled players from 8 federations. Top 10 Elo average was 2429, and top seed was Pham Tran Gia Phuc (🇻🇳 VIE, IM, 2465).
Raahul V S (🇮🇳 IND, GM, 2437) won with 7.0/9, ahead of Quoc Hy Nguyen (6.5) and Amilal Munkhdalai (6.0). S won solo starting round 7.
The biggest upset came in round 1: Angele Tenshi Biete (2025) beat Darwin Laylo (GM, 2369), a +344-point gap.
Location
🇵🇭Ozamiz City, Misamis Occidental, Philippines, Philippines
Dates
02 Nov 2025 → 08 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Titled players · 33
GM×6
IM×20
FM×7
Federations · 8 represented
🇵🇭Philippines×20
🇻🇳Vietnam×8
🇮🇳India×3
🇮🇩Indonesia×2
🇲🇳Mongolia×2
🇸🇬Singapore×1
🇹🇭Thailand×1
🇷🇺Russia×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsGM Raahul V S led from R7; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R7.
Co-leaders
11
3
4
2
2
2
1
1
1
R7–R9 · LEAD HELD
GM Raahul V S held the sole lead from R7 through R9 without losing it.
R9 · HEAD-TO-HEAD · WINNER VS 2ND
GM Raahul V S lost to IM Quoc Hy Nguyen (Black).
R6–R8 · WIN STREAK
GM Raahul V S won 3 in a row (R6–R8).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1GMRaahul V S | * | 0 | ½ | — |
| 2IMQuoc Hy Nguyen | 1 | * | 1 | — |
| 3IMAmilal Munkhdalai | ½ | 0 | * | — |
| 4IMSoham Kamotra | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Raahul V SGM | 2437 | IND | +14N | +17B | =5N | +19B | =3N | +7B | +9N | +16B | −2N | 7.0 | 43.0 | 47.5 | 35.25 | 2601 | +18.4 |
| 2 | Nguyen, Quoc HyIM | 2409 | VIE | −17N | =28B | +39N | +32B | =12N | +15B | =5N | +3B | +1B | 6.5 | 39.5 | 41.0 | 29.25 | 2476 | +8.9 |
| 3 | Amilal MunkhdalaiIM | 2446 | MGL | +23B | =18N | +16B | +5N | =1B | +8N | =6B | −2N | =13B | 6.0 | 44.0 | 48.5 | 31.00 | 2523 | +9.2 |
| 4 | Soham KamotraIM | 2400 | IND | =34B | +21N | =8B | −7N | =28B | +37N | +19B | =6N | +12B | 6.0 | 37.5 | 40.0 | 25.50 | 2414 | +3.5 |
| 5 | Tran, Tuan MinhGM | 2430 | VIE | +28B | +31N | =1B | −3B | +11N | =6N | =2B | −13N | +24B | 5.5 | 44.0 | 47.0 | 26.50 | 2433 | +1.3 |
| 6 | Pham Tran Gia PhucIM | 2465 | VIE | =12N | =22B | =13N | +14B | +16N | =5B | =3N | =4B | =7N | 5.5 | 42.5 | 47.0 | 28.25 | 2449 | -1.7 |
| 7 | Yap, Kim StevenIM | 2387 | PHI | +30N | =9B | =35N | +4B | =8B | −1N | +10B | =19N | =6B | 5.5 | 42.5 | 45.0 | 26.25 | 2471 | +11.0 |
| 8 | Garcia, Jan EmmanuelIM | 2423 | PHI | =20N | +39B | =4N | +18B | =7N | −3B | =12N | =11B | +16N | 5.5 | 41.5 | 43.0 | 23.75 | 2434 | +2.0 |
| 9 | Bersamina, PauloIM | 2431 | PHI | +13B | =7N | =18B | =15N | +23B | =19N | −1B | =14N | +25B | 5.5 | 40.5 | 45.0 | 26.00 | 2452 | +2.8 |
| 10 | Nguyen, Duc HoaGM | 2430 | VIE | =22N | =12B | =17N | +13B | =15N | =26B | −7N | +34B | +18N | 5.5 | 38.0 | 41.0 | 24.00 | 2402 | -2.8 |
| 11 | Avinash RameshIM | 2371 | IND | =21B | =33N | =15B | +37N | −5B | =28N | +17B | =8N | +19B | 5.5 | 36.0 | 38.5 | 22.25 | 2344 | -1.4 |
| 12 | Nguyen Van HuyGM | 2355 | VIE | =6B | =10N | +33B | =16N | =2B | =25N | =8B | +20N | −4N | 5.0 | 42.5 | 45.5 | 23.50 | 2418 | +7.6 |
| 13 | Bacojo, Mark JayIM | 2298 | PHI | −9N | F | =6B | −10N | +32B | +35B | +26N | +5B | =3N | 5.0 | 38.0 | 38.0 | 21.25 | 2481 | +39.4 |
| 14 | Wong, Yinn LongFM | 2316 | MAS | −1B | +36N | +31B | −6N | =35N | +30B | =18N | =9B | =15N | 5.0 | 35.5 | 38.0 | 17.00 | 2359 | +11.0 |
| 15 | Gomez, John PaulGM | 2379 | PHI | =32N | +20B | =11N | =9B | =10B | −2N | =24B | =21N | =14B | 4.5 | 41.5 | 44.5 | 21.25 | 2307 | -7.7 |
| 16 | Mariano, Fabian GlenFM | 2399 | INA | +29N | +38B | −3N | =12B | −6B | +21N | +23B | −1N | −8B | 4.5 | 41.5 | 43.5 | 17.00 | 2298 | -10.1 |
| 17 | Nouri, AlekhineFM | 2205 | PHI | +2B | −1N | =10B | =25N | −18N | +33B | −11N | +30B | =22N | 4.5 | 41.0 | 44.0 | 19.75 | 2335 | +29.8 |
| 18 | Concio, Michael Jr.IM | 2397 | PHI | +36B | =3B | =9N | −8N | +17B | =23N | =14B | =25N | −10B | 4.5 | 41.0 | 43.5 | 19.75 | 2344 | -5.8 |
| 19 | Arca, Christian Gian KarloIM | 2407 | PHI | =33B | +34N | +37B | −1N | +24B | =9B | −4N | =7B | −11N | 4.5 | 40.0 | 42.5 | 17.00 | 2308 | -10.5 |
| 20 | Nolte, RolandoIM | 2274 | PHI | =8B | −15N | =21B | +31N | =25B | =24N | +28B | −12B | =23N | 4.5 | 37.0 | 40.0 | 18.75 | 2301 | +3.5 |
| 21 | Duong Vu AnhFM | 2075 | VIE | =11N | −4B | =20N | =30B | +22N | −16B | +35N | =15B | =28B | 4.5 | 36.5 | 39.0 | 17.75 | 2324 | +101.5 |
| 22 | Vlasenko, MiroslavIM | 2290 | RUS | =10B | =6N | =25B | −24N | −21B | +39N | +37B | =23N | =17B | 4.5 | 36.0 | 37.5 | 16.25 | 2271 | -1.7 |
| 23 | Dinh Nho KietIM | 2328 | VIE | −3N | +30B | +38N | +35B | −9N | =18B | −16N | =22B | =20B | 4.5 | 35.0 | 37.0 | 14.25 | 2309 | -1.6 |
| 24 | Laylo, DarwinGM | 2369 | PHI | −38N | +29B | =32N | +22B | −19N | =20B | =15N | +26B | −5N | 4.5 | 34.5 | 36.5 | 18.50 | 2268 | -10.9 |
| 25 | Wong, Zhenyong JaydenIM | 2402 | SGP | =39N | =32B | =22N | =17B | =20N | =12B | +31N | =18B | −9N | 4.5 | 34.5 | 36.0 | 16.75 | 2256 | -16.3 |
| 26 | Budhidharma, NayakaIM | 2385 | INA | −31B | =27N | +34B | =28N | +38B | =10N | −13B | −24N | +36N | 4.5 | 32.0 | 34.0 | 14.50 | 2228 | -34.6 |
| 27 | Mascarinas, RicoIM | 2233 | PHI | −35N | =26B | −28N | +39B | −30N | =36B | =33N | +31B | +29N | 4.5 | 26.0 | 27.5 | 13.00 | 2208 | -3.3 |
| 28 | Kulpruethanon, ThanadonFM | 2281 | THA | −5N | =2N | +27B | =26B | =4N | =11B | −20N | =36B | =21N | 4.0 | 41.5 | 44.0 | 19.25 | 2256 | -5.4 |
| 29 | Casiguran, Phil Martin | 2132 | PHI | −16B | −24N | =36B | =34N | −33B | +32N | =30N | +35B | −27B | 3.5 | 28.0 | 30.5 | 9.75 | 2154 | +5.6 |
| 30 | Bancod, RonaldIM | 2112 | PHI | −7B | −23N | F | =21N | +27B | −14N | =29B | −17N | +33B | 3.0 | 35.0 | 35.0 | 11.50 | 2144 | +2.2 |
| 31 | Munkhbayar, GijirFM | 2099 | MGL | +26N | −5B | −14N | −20B | +34B | +38N | −25B | −27N | −32N | 3.0 | 34.5 | 36.5 | 9.50 | 2137 | +6.0 |
| 32 | Dolorosa, Andrei Ainsley | 2092 | PHI | =15B | =25N | =24B | −2N | −13N | −29B | F | =33N | +31B | 3.0 | 34.5 | 34.5 | 11.25 | 2195 | +33.6 |
| 33 | Ganzon, Rommel | 2171 | PHI | =19N | =11B | −12N | −38B | +29N | −17N | =27B | =32B | −30N | 3.0 | 33.5 | 35.5 | 12.25 | 2090 | -10.0 |
| 34 | Abelgas, RoelFM | 2203 | PHI | =4N | −19B | −26N | =29B | −31N | F | +38B | −10N | +39N | 3.0 | 30.5 | 30.5 | 8.25 | 2168 | -9.8 |
| 35 | Dang Hoang SonIM | 2411 | VIE | +27B | =37N | =7B | −23N | =14B | −13N | −21B | −29N | F | 2.5 | 35.0 | 35.0 | 11.00 | 2082 | -32.9 |
| 36 | Velarde, Jerish John | 2117 | PHI | −18N | −14B | =29N | F | −37B | =27N | +39B | =28N | −26B | 2.5 | 30.0 | 30.0 | 7.50 | 2098 | -5.2 |
| 37 | Tabernilla, Tyrhone James | 2004 | PHI | F | =35B | −19N | −11B | +36N | −4B | −22N | −39B | +38N | 2.5 | 29.0 | 29.0 | 5.75 | 2131 | +35.6 |
| 38 | Biete, Angele Tenshi | 2025 | PHI | +24B | −16N | −23B | +33N | −26N | −31B | −34N | F | −37B | 2.0 | 29.5 | 29.5 | 7.50 | 2052 | +0.8 |
| 39 | Young, AngeloIM | 2161 | PHI | =25B | −8N | −2B | −27N | F | −22B | −36N | +37N | −34B | 1.5 | 33.5 | 33.5 | 4.75 | 2009 | -15.1 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Duong Vu AnhFMVIE+101.54.5 pts · #19
- 2Bacojo, Mark JayIMPHI+39.45.0 pts · #13
- 3Tabernilla, Tyrhone JamesPHI+35.62.5 pts · #37
Top rating losers
- 1Budhidharma, NayakaIMINA-34.64.5 pts · #18
- 2Dang Hoang SonIMVIE-32.92.5 pts · #36
- 3Wong, Zhenyong JaydenIMSGP-16.34.5 pts · #22
Biggest upsets
- R1+344 Elo gap
- R7+336 Elo gap
- R1+286 Elo gap