CChessStats

2026 AHS Open Chess Tournament (C)

Open SwissStandard

28 players participated in this 5-round tournament, held on 28 Feb 2026 in Pretoria, South Africa. Top 10 Elo average was 1482, and top seed was Martin Slabbert (🇿🇦 RSA, 1588).

Tiaan Leon Vermeulen (🇿🇦 RSA, 1477) won with 4.5/5, ahead of Gomolemo Mooki (4.5) and Martin Slabbert (4.0). Vermeulen shared the lead from round 2, winning on tie-break.

Location
🇿🇦Pretoria, South Africa
Dates
28 Feb 2026
Time control
Standard: 50 minutes with 10 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇿🇦Martin Slabbert1588
Avg top 10
1,482
Participants
28
Federations · 1 represented
🇿🇦South Africa×17
Top 3

How it unfolded

Top 6 · 5 rounds

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

Co-leaders
15
6
4
2
2
1.52.545R1R2R3R4R5
Mooki4.5Vermeulen4.5Moyo4Slabbert43.5Matsioloko3.5
R5 · TIEBREAK CLUSTER

2 players finish on 4.5/5. Vermeulen takes the title on Buchholz Cut1 (14.0).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Gomolemo Mooki drew with Tiaan Leon Vermeulen (Black).

WIN STREAKS · 3 top finishers

Gomolemo Mooki 4 wins (R1–R4)Tiaan Leon Vermeulen 4 wins (R1–R4)Dennis Simbarashe Moyo 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Gomolemo Mooki*
½
—
1
2Tiaan Leon Vermeulen
½
*
1
—
3Dennis Simbarashe Moyo—
0
*—
4Martin Slabbert
0
——*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Vermeulen, Tiaan Leon1477RSA+19N+21B+10N+4B=2B4.514.016.013.752212+16.4
2Mooki, Gomolemo0RSA+?B+?N+13B+3B=1N4.511.011.08.7515580.0
3Slabbert, Martin1588RSA+9B+20N+15B−2N+10B4.013.515.511.002212+13.2
4Moyo, Dennis Simbarashe0RSA+23B+18B+7N−1N+?B4.012.012.07.5014900.0
5Van der Merwe, Altus1474RSA+11B=8N−6B+25N+16B3.512.514.08.75655-20.8
6Matsioloko, Osego1456RSA=17N+24B+5N−7B+14N3.512.013.58.751585+20.8
7Haupt, Joshua1433RSA+26B+22N−4B+6N=15B3.512.013.07.752255+20.4
8FIDE 5340133850—+?N=5B−14N+17B+13B3.511.011.06.7515040.0
9Cele, Bongiwe Natasha Natasha0RSA−3N+?B+22N=14B+20N3.510.510.55.2513080.0
10Murray, Henry1406RSA+16B+12N−1B+11N−3N3.014.517.08.50709-29.6
11FIDE 5340056250—−5N+?B+?N−10B+21N3.08.58.52.0013350.0
12FIDE 5340432760—+?B−10B+?N−?N+24B3.04.54.51.506260.0
13Lekalakala, Bupe Amogelang1508RSA=24N+17B−2N+18B−8N2.513.014.55.752237+16.0
14Lodi, Olebogeng1482RSA+27B−15N+8B=9N−6B2.513.014.06.25655-20.4
15Grahan, Chie-Ann0RSAF+14B−3N+20B=7N2.512.012.06.2514830.0
16Montsho, Reatlegile1501RSA−10N+19B=18N+?B−5N2.511.511.53.751367-30.4
17FIDE 143624650—=6B−13N+23B−8N+25B2.511.012.54.7512890.0
18Theron, Carla1498RSA+25B−4N=16B−13N+23B2.510.512.04.25708-16.0
19FIDE 5340432920—−1B−16N+26B+?N=?B2.58.08.01.006760.0
20FIDE 143940060—+?B−3B+21N−15N−9B2.012.012.02.007410.0
21FIDE 143794810—+?B−1N−20B+27N−11B2.010.510.51.0014580.0
22Badenhorst, Michael0RSA+?N−7B−9B−23N+28B2.09.59.51.006470.0
23Ebersohn, Gerhard0RSA−4N=25B−17N+22B−18N1.511.012.52.756370.0
24Swart, Reyhan0RSA=13B−6N−25N+?B−12N1.510.510.51.2512890.0
25FIDE 5340159140—−18N=23N+24B−5B−17N1.510.011.52.256550.0
26FIDE 143891420—−7N−?B−19N−28N+?B1.07.07.00.006470.0
27FIDE 143737340—−14N+?N−?B−21B−?N1.04.54.50.006650.0
28FIDE 5340003990—−?B−?N−?N+26B−22N1.03.03.01.006670.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers