CChessStats

2026 Piet Robbertse Open Chess Tournament (B)

Open SwissStandard

24 players participated in this 5-round tournament, held from 07 Feb 2026 to 08 Feb 2026 in Pretoria, South Africa. 2 federations represented. Top 10 Elo average was 1582, and top seed was Gabin Tshibangu Kabuya (🇿🇦 RSA, 1639).

Matthew Pasaribu (🇿🇦 RSA, 1605) won with 4.5/5, ahead of Arthur da Silva Lima Bernhardt (4.0) and Thoriso Kgotse (4.0). Pasaribu won solo starting round 4.

The biggest upset came in round 1: Leja Swanepoel (1439) beat Thabang Mathe (1597), a +158-point gap.

Location
🇿🇦Pretoria, South Africa
Dates
07 Feb 2026 → 08 Feb 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇿🇦Gabin Tshibangu Kabuya1639
Avg top 10
1,582
Participants
24
Federations · 2 represented
🇿🇦South Africa×23
🇧🇷Brazil×1
Top 3

How it unfolded

Top 6 · 5 rounds

Matthew Pasaribu led from R4; +0.5-point edge over the runner-up.

Co-leaders
11
5
2
1
1
1.52.545R1R2R3R4R5
Pasaribu4.5Bernhardt4Kgotse4Scholtz3.5Seloane3.5Snyckers3.5
R4–R5 · LEAD HELD

Matthew Pasaribu held the sole lead from R4 through R5 without losing it.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Matthew Pasaribu beat Arthur da Silva Lima Bernhardt (White).

WIN STREAKS · 2 top finishers

Matthew Pasaribu 4 wins (R1–R4)Arthur da Silva Lima Bernhardt 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Matthew Pasaribu*
1
½
—
2Arthur da Silva Lima Bernhardt
0
*——
3Thoriso Kgotse
½
—*—
4Rohann Scholtz———*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Pasaribu, Matthew1605RSA+21N+13B+4N+2B=3N4.513.514.512.501808+14.4
2Bernhardt, Arthur da Silva Lima0BRA+10B+14N+5B−1N+7N4.014.016.011.5016100.0
3Kgotse, Thoriso1585RSA+24N+7B=8N+9B=1B4.013.514.010.251726+23.2
4Snyckers, Frank A.1595RSA+18B+12N−1B=5N+16B3.512.514.58.251650+4.8
5Seloane, Kamogelo0RSA+20N+19B−2N=4B+12N3.511.512.56.7515360.0
6Scholtz, Rohann1463RSA−7N=22B+24N+20B+8N3.58.08.55.001663+42.8
7Kabuya, Gabin Tshibangu1639RSA+6B−3N+11B+14N−2B3.014.016.08.001636-0.4
8Fourie, Ruan1558RSA+9B=11N=3B+17N−6B3.013.015.08.251544-2.4
9Van Zyl, Albertus Petrus0RSA−8N+15B+13N−3N+21B3.011.012.05.0015280.0
10Mehta, Aryan1548RSA−2N−20B+19N+13B+17N3.09.510.55.501620+11.6
11Bienedell, Robin0RSA+15N=8B−7N−12B+14B2.510.512.55.5015770.0
12Swanepoel, Leja1439RSA+22N−4B=21N+11N−5B2.510.511.54.0015410.0
13Vosloo, Dewaal0RSA+16B−1N−9B−10N+19B2.012.514.03.5015360.0
14Westermann, Liezl1458RSA+23N−2B+20N−7B−11N2.010.511.52.001557+7.2
15Claassen, Gabriella1540RSA−11B−9N+18B−16N+23B2.09.510.53.001486-3.0
16Feuth, Alexander1551RSA−13N=21B=22N+15B−4N2.08.59.53.001541-6.4
17Malope, Modupi1598RSA=19N=24B+23N−8B−10B2.08.59.02.001236-26.4
18Grobbelaar, Mienje1404RSA−4N−23B−15N+24B+20N2.07.58.01.501410+1.6
19Van Der Merwe, Zander Christia1441RSA=17B−5N−10B+23B−13N1.510.511.52.001375-4.4
20Haupt, Abigail1491RSA−5B+10N−14B−6N−18B1.012.014.03.001282-40.0
21Jonker, Tertius1438RSA−1B=16N=12BF−9N1.012.013.02.251395-3.2
22Mathe, Thabang1597RSA−12B=6N=16BFF1.09.09.02.751515-4.6
23Boshoff, Milah0RSA−14B+18N−17B−19N−15N1.08.09.52.0012490.0
24Smit, Juanru0RSA−3B=17N−6B−18NF0.511.511.51.0011860.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets