3rd Vientiane Open FIDE Rated
34 players participated in this 5-round tournament, held from 24 May 2025 to 25 May 2025 in Vientiane capital, Laos. 2 titled players from 3 federations. Top 10 Elo average was 1477, and top seed was Arvie Lozano (🇵🇭 PHI, 1941).
Arvie Lozano (🇵🇭 PHI, 1941) won with 5.0/5, ahead of SOUMINTA YOMVILATH (4.5) and Zirui(SC) Wang (4.0). Lozano broke clear in the final round.
The biggest upset came in round 5: SOUMINTA YOMVILATH (1513) beat Phakthong Vilaphen (1683), a +170-point gap.
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How it unfolded
Top 6 · 5 roundsArvie Lozano led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
Arvie Lozano held the sole lead from R5 through R5 without losing it.
Arvie Lozano 5 wins (R1–R5)Zhiyuan Tan 4 wins (R2–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Arvie Lozano | * | — | — | 1 |
| 2SOUMINTA YOMVILATH | — | * | — | — |
| 3Zhiyuan Tan | — | — | * | — |
| 4Yupan Fan | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Lozano, Arvie | 1941 | PHI | +13N | +25B | +11N | +10B | +4N | 5.0 | 13.0 | 15.0 | 15.00 | 2398 | +7.2 |
| 2 | YOMVILATH, SOUMINTA | 1513 | LAO | +23N | +14B | =8N | +21B | +10N | 4.5 | 12.0 | 14.5 | 12.75 | 1909 | +40.4 |
| 3 | Wang, Zirui(SC) | 1710 | CHN | +26N | +5B | +17N | −4B | +8N | 4.0 | 14.5 | 16.5 | 12.50 | 1655 | -6.0 |
| 4 | Fan, Yupan | 1557 | CHN | +22N | +18B | +30N | +3N | −1B | 4.0 | 14.5 | 15.5 | 10.50 | 1826 | +24.4 |
| 5 | FIDE 17702143 | 0 | — | +7B | −3N | +?B | +19N | +16B | 4.0 | 14.0 | 14.0 | 10.00 | 910 | 0.0 |
| 6 | Senglek, Khonsavanh | 1608 | LAO | +29N | −30B | +9B | +20N | +15B | 4.0 | 11.5 | 12.5 | 11.50 | 2256 | +6.0 |
| 7 | Tan, Zhiyuan | 0 | CHN | −5N | +26B | +?N | +?B | +11N | 4.0 | 9.0 | 9.0 | 5.00 | 1547 | 0.0 |
| 8 | Chi YangCM | 1749 | LAO | +28B | +27N | =2B | +12N | −3B | 3.5 | 13.5 | 15.5 | 9.25 | 1420 | -33.6 |
| 9 | NGUYEN, SUNJON KAYDEN | 1456 | LAO | +33N | =21B | −6N | +22B | +17N | 3.5 | 12.0 | 12.0 | 6.75 | 808 | -12.0 |
| 10 | Vilaphen, Phakthong | 1683 | LAO | +24B | +12N | +16B | −1N | −2B | 3.0 | 15.5 | 18.0 | 8.50 | 928 | -36.0 |
| 11 | Maly InthavongWCM | 1552 | LAO | +34B | +15N | −1B | +30N | −7B | 3.0 | 13.0 | 13.0 | 4.00 | 1141 | -3.6 |
| 12 | Fan, Xiang | 0 | CHN | +?N | −10B | +18N | −8B | +26N | 3.0 | 11.5 | 11.5 | 5.00 | 916 | 0.0 |
| 13 | MANALO, SEAN MICHAEL | 0 | LAO | −1B | +32N | +27B | −16N | +30B | 3.0 | 11.0 | 11.5 | 3.50 | 1141 | 0.0 |
| 14 | FIDE 17702534 | 0 | — | +?B | −2N | +31B | −15N | +28B | 3.0 | 10.5 | 10.5 | 3.00 | 715 | 0.0 |
| 15 | FIDE 17701988 | 0 | — | +?N | −11B | +?N | +14B | −6N | 3.0 | 10.0 | 10.0 | 3.00 | 1541 | 0.0 |
| 16 | FIDE 17702470 | 0 | — | +?N | +?B | −10N | +13B | −5N | 3.0 | 10.0 | 10.0 | 3.00 | 883 | 0.0 |
| 17 | SISAMOUTH, CHANTHAVISAP | 0 | LAO | +?N | +?B | −3B | +28N | −9B | 3.0 | 9.5 | 9.5 | 2.00 | 1417 | 0.0 |
| 18 | FIDE 17702585 | 0 | — | +?B | −4N | −12B | +?N | +?B | 3.0 | 7.0 | 7.0 | 0.00 | 760 | 0.0 |
| 19 | VILAPHEN, BOUNLED | 0 | LAO | +?N | +?B | −21N | −5B | +?B | 3.0 | 6.5 | 6.5 | 0.00 | 1442 | 0.0 |
| 20 | SENGPHACHAN, BOUNTHENGNOY | 0 | LAO | −?N | +?B | +25N | −6B | +?N | 3.0 | 6.0 | 6.0 | 2.00 | 1426 | 0.0 |
| 21 | FIDE 17702607 | 0 | — | +31B | =9N | +19B | −2N | −25B | 2.5 | 13.0 | 14.0 | 5.75 | 1293 | 0.0 |
| 22 | FIDE 17702240 | 0 | — | −4B | =?N | +?B | −9N | +?N | 2.5 | 7.5 | 7.5 | 0.00 | 1354 | 0.0 |
| 23 | FIDE 17702577 | 0 | — | −2B | =?N | +?B | +27N | F | 2.5 | 6.5 | 6.5 | 2.00 | 715 | 0.0 |
| 24 | FIDE 17702364 | 0 | — | −10N | −?B | +33N | =?B | +?N | 2.5 | 3.0 | 3.0 | 0.00 | 1290 | 0.0 |
| 25 | FIDE 343467865 | 0 | — | F | −1N | −20B | +29B | +21N | 2.0 | 12.5 | 12.5 | 4.50 | 1141 | 0.0 |
| 26 | FIDE 17702356 | 0 | — | −3B | −7N | +32B | +?N | −12B | 2.0 | 11.5 | 11.5 | 0.50 | 910 | 0.0 |
| 27 | FIDE 17702399 | 0 | — | +?N | −8B | −13N | −23B | +31N | 2.0 | 10.0 | 10.0 | 1.00 | 949 | 0.0 |
| 28 | MANICHITH, NAMPHET | 0 | LAO | −8N | +?B | +?N | −17B | −14N | 2.0 | 9.5 | 9.5 | 0.00 | 1666 | 0.0 |
| 29 | FIDE 17701732 | 0 | — | −6B | +?B | −?N | −25N | +?B | 2.0 | 6.0 | 6.0 | 0.00 | 735 | 0.0 |
| 30 | SUELO, RYZIA LEI ZHEYSHA | 0 | LAO | F | +6N | −4B | −11B | −13N | 1.0 | 14.0 | 14.0 | 4.00 | 1448 | 0.0 |
| 31 | FIDE 17701970 | 0 | — | −21N | +33B | −14N | −?B | −27B | 1.0 | 7.5 | 7.5 | 0.00 | 783 | 0.0 |
| 32 | FIDE 17702542 | 0 | — | −?N | −13B | −26N | F | =?B | 0.5 | 5.0 | 5.0 | 0.00 | 622 | 0.0 |
| 33 | FIDE 17702496 | 0 | — | −9B | −31N | −24B | −?N | −?B | 0.0 | 7.0 | 7.0 | 0.00 | 656 | 0.0 |
| 34 | FIDE 17702569 | 0 | — | −11N | −?B | −?N | F | F | 0.0 | 3.0 | 3.0 | 0.00 | 752 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1YOMVILATH, SOUMINTALAO+40.44.5 pts · #4
- 2Fan, YupanCHN+24.44.0 pts · #5
- 3Lozano, ArviePHI+7.25.0 pts · #1
- 1Vilaphen, PhakthongLAO-36.03.0 pts · #27
- 2Chi YangCMLAO-33.63.5 pts · #14
- 3NGUYEN, SUNJON KAYDENLAO-12.03.5 pts · #18
- R5+170 Elo gap
- R4+153 Elo gap