2026 KSNG Open Chess Tournament (B)

Open SwissStandard

23 players participated in this 5-round tournament, held on 18 Apr 2026 in Centurion, South Africa. Top 10 Elo average was 1602, and top seed was Mpho Raseona (🇿🇦 RSA, 1666).

Willem Francois Cloete (🇿🇦 RSA, 1646) won with 4.5/5, ahead of Kamogelo Seloane (4.0) and Siyabonga Samuel Khutso Khumalo (4.0). Cloete broke clear in the final round.

The biggest upset came in round 3: Karabo Nkwadi (1468) beat Hendrik Johanne Weideman (1592), a +124-point gap.

Location

🇿🇦Centurion, South Africa

Dates

18 Apr 2026

Time control

Standard: 50 minutes with 10 seconds increment from move 1

System

Swiss · 5 rounds

Top seed

🇿🇦Mpho Raseona1666

Avg top 10

1,602

Participants

Federations · 1 represented

🇿🇦South Africa×23

Top 3

🥇
Willem Francois Cloete
🇿🇦RSA·1646
4.5pts·1918perf+23.0
🥈
Kamogelo Seloane
🇿🇦RSA·1621
4.0pts·1767perf+33.6
🥉
Siyabonga Samuel Khutso Khumalo
🇿🇦RSA·1584
4.0pts·1909perf+50.8

How it unfolded

Top 6 · 5 rounds

Willem Francois Cloete led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders

Cloete4.5Khumalo4Seloane4Raseona3.5Mathe3.5Weideman3

R5–R5 · LEAD HELD

Willem Francois Cloete held the sole lead from R5 through R5 without losing it.

R1–R3 · WIN STREAK

Willem Francois Cloete won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Willem Francois Cloete	*	—	1	½
2Siyabonga Samuel Khutso Khumalo	—	*	—	1
3Kamogelo Seloane	0	—	*	—
4Mpho Raseona	½	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Cloete, Willem Francois	1646	RSA	+23N	+11B	+2N	=4B	+15N	4.5	12.0	12.0	10.25	1918	+23.0
2	Seloane, Kamogelo	1621	RSA	+16B	+6N	−1B	+9N	+10B	4.0	12.5	14.5	10.00	1767	+33.6
3	Khumalo, Siyabonga Samuel Khutso	1584	RSA	=13B	+20N	=9B	+14N	+4N	4.0	10.0	10.5	8.25	1909	+50.8
4	Raseona, Mpho	1666	RSA	+14B	+12N	+10B	=1N	−3B	3.5	13.5	15.5	9.25	1741	+19.2
5	Mathe, Thabang	1578	RSA	−6B	+16N	=13B	+21N	+9B	3.5	9.5	10.0	6.00	1587	-0.6
6	Kirstein, Tinus Ederich	1552	RSA	+5N	−2B	−15N	+20B	+17N	3.0	11.5	12.0	6.00	1782	+58.8
7	Nkwadi, Karabo	1468	RSA	=20B	=13N	+8B	=10N	=12B	3.0	10.0	10.5	6.75	1635	+41.6
8	Weideman, Hendrik Johanne	1592	RSA	−11N	+23B	−7N	+18B	+14N	3.0	9.5	9.5	4.00	1587	+0.2
9	Elvin, Andrew	0	RSA	+19N	+17B	=3N	−2B	−5N	2.5	13.5	15.5	6.00	1585	0.0
10	Slabbert, Martin	1603	RSA	+22N	+15B	−4N	=7B	−2N	2.5	12.5	13.0	4.00	1487	-24.4
11	Scholtz, Rohann	1501	RSA	+8B	−1N	−12B	=16N	+21B	2.5	12.0	12.5	4.50	1558	+16.4
12	Baloyi, Boikanyo	1576	RSA	+21N	−4B	+11N	−15B	=7N	2.5	11.0	11.5	4.50	1614	+8.8
13	Mkotong, Reagile	1484	RSA	=3N	=7B	=5N	=17B	F	2.0	12.5	14.5	6.25	1559	+16.8
14	Tissot Van Patot, Anton	1564	RSA	−4N	+22B	+18N	−3B	−8B	2.0	12.5	13.0	2.50	1499	-9.0
15	Kalla, Hasan	0	RSA	F	−10N	+6B	+12N	−1B	2.0	12.5	12.5	5.50	1579	0.0
16	Van Zyl, Albertus Petrus	1556	RSA	−2N	−5B	+23N	=11B	=22B	2.0	10.5	10.5	1.50	1487	-18.8
17	Mokotedi, Lesedi	1579	RSA	+18B	−9N	=21B	=13N	−6B	2.0	9.5	10.0	3.25	1472	-22.8
18	Seitei, Neo	1460	RSA	−17N	+19B	−14B	−8N	+23B	2.0	9.0	9.0	2.00	1499	+6.8
19	Adamson, Luke	1566	RSA	−9B	−18N	+20B	+22N	F	2.0	7.0	7.5	1.00	1657	+7.2
20	Jadezweni, Thato	1578	RSA	=7N	−3B	−19N	−6N	F	0.5	12.0	12.0	1.50	1211	-70.4
21	Naude, Johan	1408	RSA	−12B	F	=17N	−5B	−11N	0.5	10.5	10.5	1.00	1238	-32.4
22	Mahlangu, Nkosinathi Phil	1548	RSA	−10B	−14N	F	−19B	=16N	0.5	8.5	8.5	1.00	1248	-54.0
23	Hannweg, Norbert	1560	RSA	−1B	−8N	−16B	F	−18N	0.0	11.5	11.5	0.00	765	-78.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Kirstein, Tinus EderichRSA
+58.8
3.0 pts · #6
2Khumalo, Siyabonga Samuel KhutsoRSA
+50.8
4.0 pts · #1
3Nkwadi, KaraboRSA
+41.6
3.0 pts · #7

Top rating losers

1Hannweg, NorbertRSA
-78.8
0.0 pts · #23
2Jadezweni, ThatoRSA
-70.4
0.5 pts · #21
3Mahlangu, Nkosinathi PhilRSA
-54.0
0.5 pts · #22

Biggest upsets

R3+124 Elo gap
Nkwadi, Karabo1468 beat Weideman, Hendrik Johanne1592
R2+106 Elo gap
Seitei, Neo1460 beat Adamson, Luke1566