CChessStats

The 10th Open Vientiane Chess Standard

Open SwissStandard

21 players participated in this 5-round tournament, held from 30 May 2026 to 31 May 2026 in Vientiane capital, Laos. 2 titled players. Top 10 Elo average was 914, and top seed was Chi Yang (🇱🇦 LAO, CM, 1723).

Maly Inthavong (🇱🇦 LAO, WCM, 1548) won with 4.5/5, ahead of SOUMINTA YOMVILATH (4.5). Inthavong shared the lead from round 1, winning on tie-break.

The biggest upset came in round 3: SOUMINTA YOMVILATH (1490) beat Chi Yang (CM, 1723), a +233-point gap.

Location
🇱🇦Vientiane capital, Laos
Dates
30 May 2026 → 31 May 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇱🇦CMChi Yang1723
Avg top 10
914
Participants
21
Titled players · 2
CM×1
WCM×1
Federations · 1 represented
🇱🇦Laos×6
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 3 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 3 at the finish.

Co-leaders
12
5
3
2
3
1.52.545R1R2R3R4R5
R5 · TIEBREAK CLUSTER

3 players finish on 4.5/5. Inthavong takes the title on Buchholz Cut1 (13.5).

WIN STREAKS · 3 top finishers

FIDE 17702879 4 wins (R2–R5)WCM Maly Inthavong 4 wins (R1–R4)SOUMINTA YOMVILATH 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1FIDE 17702879*
2WCMMaly Inthavong*
½
3SOUMINTA YOMVILATH
½
*
4FIDE 17702976*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Maly InthavongWCM1548LAO+18N+8B+6N+7B=2N4.513.515.513.251759+29.6
2YOMVILATH, SOUMINTA1490LAO+16N+13B+14N+11B=1B4.511.513.511.251829+34.8
3FIDE 177028790=5N+?B+?N+14B+6N4.58.58.56.7515910.0
4FIDE 177029760+?N14B+16N+15B+7N4.09.09.07.0015780.0
5NGUYEN, SUNJON KAYDEN1405LAO=3B+10N7B+12N+11N3.513.015.510.25633-18.4
6Viphommavongsa, Onanong1536LAO+12B+17N1B+9N3B3.014.516.57.50748-19.2
7SENGPHACHAN, BOUNTHENGNOY1433LAO+20N+15B+5N1N4B3.014.015.06.501477+4.8
8FIDE 3434678650+?B1N11B+17N+15B3.011.011.04.007480.0
9FIDE 17702321011B+19N+17B6B+14N3.09.511.56.0016300.0
10FIDE 17702887015N5B+20N+?B+18N3.08.58.53.006050.0
11FIDE 177029840+9N=?B+8N2N5B2.514.014.06.0011790.0
12FIDE 1770299206N+20B=13N5B+16N2.511.012.04.256710.0
13FIDE 177024960+?B2N=12B+19N?B2.59.09.03.256760.0
14Chi YangCM1723LAO+21B+4N2B3N9B2.016.017.05.00690-31.6
15FIDE 177029680+10B7N+21B4N8N2.013.014.04.006330.0
16FIDE 1770292502B+21N4B+?N12B2.012.012.01.006900.0
17FIDE 177029500+?N6B9N8B+21B2.010.010.01.007360.0
18FIDE 1770300001B+?N+?B?N10B2.07.57.50.007050.0
19FIDE 177029090?N9B+?N13B+?B2.05.55.50.006610.0
20FIDE 1770285207B12N10BF+?N1.08.58.50.006330.0
21FIDE 17702941014N16B15N+?B17N1.08.08.00.009230.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets