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

Federations · 2 represented

🇿🇦South Africa×23

🇧🇷Brazil×1

Top 3

🥇
Matthew Pasaribu
🇿🇦RSA·1605
4.5pts·1808perf+14.4
🥈
Arthur da Silva Lima Bernhardt
🇧🇷BRA
4.0pts·1610perf0.0
🥉
Thoriso Kgotse
🇿🇦RSA·1585
4.0pts·1726perf+23.2

How it unfolded

Top 6 · 5 rounds

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

Co-leaders

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

Player	1	2	3	4
1Matthew Pasaribu	*	1	½	—
2Arthur da Silva Lima Bernhardt	0	*	—	—
3Thoriso Kgotse	½	—	*	—
4Rohann Scholtz	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Pasaribu, Matthew	1605	RSA	+21N	+13B	+4N	+2B	=3N	4.5	13.5	14.5	12.50	1808	+14.4
2	Bernhardt, Arthur da Silva Lima	0	BRA	+10B	+14N	+5B	−1N	+7N	4.0	14.0	16.0	11.50	1610	0.0
3	Kgotse, Thoriso	1585	RSA	+24N	+7B	=8N	+9B	=1B	4.0	13.5	14.0	10.25	1726	+23.2
4	Snyckers, Frank A.	1595	RSA	+18B	+12N	−1B	=5N	+16B	3.5	12.5	14.5	8.25	1650	+4.8
5	Seloane, Kamogelo	0	RSA	+20N	+19B	−2N	=4B	+12N	3.5	11.5	12.5	6.75	1536	0.0
6	Scholtz, Rohann	1463	RSA	−7N	=22B	+24N	+20B	+8N	3.5	8.0	8.5	5.00	1663	+42.8
7	Kabuya, Gabin Tshibangu	1639	RSA	+6B	−3N	+11B	+14N	−2B	3.0	14.0	16.0	8.00	1636	-0.4
8	Fourie, Ruan	1558	RSA	+9B	=11N	=3B	+17N	−6B	3.0	13.0	15.0	8.25	1544	-2.4
9	Van Zyl, Albertus Petrus	0	RSA	−8N	+15B	+13N	−3N	+21B	3.0	11.0	12.0	5.00	1528	0.0
10	Mehta, Aryan	1548	RSA	−2N	−20B	+19N	+13B	+17N	3.0	9.5	10.5	5.50	1620	+11.6
11	Bienedell, Robin	0	RSA	+15N	=8B	−7N	−12B	+14B	2.5	10.5	12.5	5.50	1577	0.0
12	Swanepoel, Leja	1439	RSA	+22N	−4B	=21N	+11N	−5B	2.5	10.5	11.5	4.00	1541	0.0
13	Vosloo, Dewaal	0	RSA	+16B	−1N	−9B	−10N	+19B	2.0	12.5	14.0	3.50	1536	0.0
14	Westermann, Liezl	1458	RSA	+23N	−2B	+20N	−7B	−11N	2.0	10.5	11.5	2.00	1557	+7.2
15	Claassen, Gabriella	1540	RSA	−11B	−9N	+18B	−16N	+23B	2.0	9.5	10.5	3.00	1486	-3.0
16	Feuth, Alexander	1551	RSA	−13N	=21B	=22N	+15B	−4N	2.0	8.5	9.5	3.00	1541	-6.4
17	Malope, Modupi	1598	RSA	=19N	=24B	+23N	−8B	−10B	2.0	8.5	9.0	2.00	1236	-26.4
18	Grobbelaar, Mienje	1404	RSA	−4N	−23B	−15N	+24B	+20N	2.0	7.5	8.0	1.50	1410	+1.6
19	Van Der Merwe, Zander Christia	1441	RSA	=17B	−5N	−10B	+23B	−13N	1.5	10.5	11.5	2.00	1375	-4.4
20	Haupt, Abigail	1491	RSA	−5B	+10N	−14B	−6N	−18B	1.0	12.0	14.0	3.00	1282	-40.0
21	Jonker, Tertius	1438	RSA	−1B	=16N	=12B	F	−9N	1.0	12.0	13.0	2.25	1395	-3.2
22	Mathe, Thabang	1597	RSA	−12B	=6N	=16B	F	F	1.0	9.0	9.0	2.75	1515	-4.6
23	Boshoff, Milah	0	RSA	−14B	+18N	−17B	−19N	−15N	1.0	8.0	9.5	2.00	1249	0.0
24	Smit, Juanru	0	RSA	−3B	=17N	−6B	−18N	F	0.5	11.5	11.5	1.00	1186	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Scholtz, RohannRSA
+42.8
3.5 pts · #2
2Kgotse, ThorisoRSA
+23.2
4.0 pts · #10
3Pasaribu, MatthewRSA
+14.4
4.5 pts · #5

Top rating losers

1Haupt, AbigailRSA
-40.0
1.0 pts · #20
2Malope, ModupiRSA
-26.4
2.0 pts · #24
3Feuth, AlexanderRSA
-6.4
2.0 pts · #9

Biggest upsets

R1+158 Elo gap
Swanepoel, Leja1439 beat Mathe, Thabang1597