CChessStats

2026 April Chess Challenge 2nd Edition - GRIT Swiss Open

Open SwissStandard

25 players participated in this 5-round tournament, held from 08 May 2026 to 10 May 2026 in Windhoek, Namibia. Top 10 Elo average was 1636, and top seed was Sibusiso Angula (🇳🇦 NAM, 1736).

Sibusiso Angula (🇳🇦 NAM, 1736) won with 4.5/5, ahead of Inotila Marthen Itembu Kalilo (4.0) and MichaelAngelo Prince Haraseb (4.0). Angula won solo starting round 4.

The biggest upset came in round 4: Lucia Namushinga (1427) beat Elavako Sanga Pakote (1611), a +184-point gap.

Location
🇳🇦Windhoek, Namibia
Dates
08 May 2026 → 10 May 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 5 rounds
Top seed
🇳🇦Sibusiso Angula1736
Avg top 10
1,636
Participants
25
Federations · 1 represented
🇳🇦Namibia×19
Top 3

How it unfolded

Top 6 · 5 rounds

Sibusiso Angula led from R4; +0.5-point edge over the runner-up.

Co-leaders
11
6
2
1
1
1.52.545R1R2R3R4R5
Angula4.5Kalilo4Haipinge4Haraseb4Heyn3.5Fidel3.5
R4–R5 · LEAD HELD

Sibusiso Angula held the sole lead from R4 through R5 without losing it.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Sibusiso Angula beat Inotila Marthen Itembu Kalilo (Black).

WIN STREAKS · 2 top finishers

Sibusiso Angula 4 wins (R1–R4)Inotila Marthen Itembu Kalilo 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Sibusiso Angula*
1
½
1
2Inotila Marthen Itembu Kalilo
0
*——
3Tuhafifa Pomwene Haipinge
½
—*—
4MichaelAngelo Prince Haraseb
0
——*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Angula, Sibusiso1736NAM+11B+12N+3B+2N=4B4.514.517.015.001932+32.8
2Kalilo, Inotila Marthen Itembu0NAM+5B+11N+16N−1B+7N4.013.515.511.0016540.0
3Haraseb, MichaelAngelo Prince1706NAM+23N+7B−1N+9B+13B4.012.513.08.501626-4.2
4Haipinge, Tuhafifa Pomwene1730NAM+9N+17B=10N+16B=1N4.011.513.510.001844+23.2
5Heyn, Jadon1580NAM−2N+22B=6N+17B+10N3.512.012.56.751861+41.6
6Shekupe Fidel1608NAM+19B=13N=5B=8N+14B3.511.512.58.001520-9.6
7Siremo, Justin Josephovich1516NAM+20B−3N+24B+18N−2B3.011.011.03.00906-10.0
8Boshoff Helen1460NAM+25N−16B+20N=6B=12N3.09.09.04.001488+3.6
9Binneman, Francois Jacobus Albertus0NAM−4B+19N+12B−3N=11B2.513.014.04.7515090.0
10Goaseb, Branden1615NAM+15B+24N=4B−13N−5B2.512.512.54.501462-15.6
11Namushinga, Lucia1427NAM−1N−2B+25N+21B=9N2.512.012.02.251674+24.0
12Boshoff Francis1521NAM+22N−1B−9N+19B=8B2.511.011.53.001405-12.4
13Ntinda, Simon0NAMF=6B+21N+10B−3N2.511.011.05.2516550.0
14Binneman, Samuel Johan0NAM−16N+25B=17N+24B−6N2.57.57.51.0013470.0
15Innes, Ethan Colin0NAM−10N−21B+23N+20B=17N2.56.57.02.5013160.0
16Denilson Haingura1711NAM+14B+8N−2B−4NF2.013.515.55.501595-11.2
17Roman, Cyprian1542NAM+18B−4N=14B−5N=15B2.012.514.54.50855-28.4
18FIDE 152062460—−17N+23B+22N−7BF2.07.58.01.007290.0
19FIDE 152162330—−6N−9BF−12N+21N1.09.59.51.0014550.0
20Moongo, Anna0NAM−7NF−8B−15N+22B1.09.09.00.506880.0
21Pakote,Elavako Sanga1611NAMF+15N−13B−11N−19B1.08.58.52.50627-29.6
22FIDE 152226320—−12B−5N−18B=23B−20N0.59.09.50.257510.0
23FIDE 152197980—−3B−18N−15B=22NF0.59.09.00.259060.0
24FIDE 152180660—F−10B−7N−14NF0.09.09.00.007660.0
25FIDE 152240310—−8B−14N−11BFF0.08.08.00.006440.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets