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2025 ZONE 4.5 AFRICA CHESS CHAMPIONSHIPS OPEN

Open SwissStandard

21 players participated in this 9-round tournament, held from 21 Oct 2025 to 28 Oct 2025 in Soyo, Angola. 11 titled players from 5 federations. Top 10 Elo average was 2191, and top seed was Andrew Kayonde (🇿🇲 ZAM, IM, 2307).

Andrew Kayonde (🇿🇲 ZAM, IM, 2307) won with 7.0/9, ahead of Donaldo Paiva (7.0) and Sergio Miguel (6.0). Kayonde shared the lead from round 1, winning on tie-break.

The biggest upset came in round 1: Jaime Sonhy (CM, 2012) beat Sergio Miguel (FM, 2277), a +265-point gap.

Location
🇦🇴Soyo, Angola
Dates
21 Oct 2025 → 28 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Top seed
🇿🇲IMAndrew Kayonde2307
Avg top 10
2,191
Participants
21
Titled players · 11
IM×2
FM×6
CM×3
Federations · 5 represented
🇦🇴Angola×15
🇿🇦South Africa×1
🇿🇲Zambia×1
🇳🇦Namibia×1
🇲🇿Mozambique×1
Top 3
  • 🥇
    IMAndrew Kayonde
    🇿🇲ZAM·2307
    7.0pts·2384perf+8.6
  • 🥈
    FMDonaldo Paiva
    🇲🇿MOZ·2171
    7.0pts·2318perf+32.6
  • 🥉
    FMSergio Miguel
    🇦🇴ANG·2277
    6.0pts·2240perf-6.8

How it unfolded

Top 6 · 9 rounds

Tight race until R8; 2 players tied at 7.0/9, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders
9
4
2
2
2
3
2
1
2
2.54.579R1R2R3R4R5R6R7R8R9
Kayonde7Paiva7Miguel6Beukes5.5Sonhy5.5Prospero5.5
R8–R9 · LEAD HELD

IM Andrew Kayonde held the sole lead from R8 through R9 without losing it.

R9 · TIEBREAK CLUSTER

2 players finish on 7.0/9. Kayonde takes the title on Buchholz Cut1 (44.5).

R3 · HEAD-TO-HEAD · WINNER VS 2ND

IM Andrew Kayonde beat FM Donaldo Paiva (Black).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1IMAndrew Kayonde*
1
½
½
2FMDonaldo Paiva
0
*
1
½
3FMSergio Miguel
½
0
*
1
4IMDante M Beukes
½
½
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9PtsBu C1BuSBPerfΔ
1Kayonde, AndrewIM2307ZAM+14N+7B+2N=4B=8N=3B+11N+5B=6N7.044.548.037.002384+8.6
2Paiva, DonaldoFM2171MOZ+17B+20N−1B+12N=9N+5B+3N=4B+8N7.042.043.030.752318+32.6
3Miguel, SergioFM2277ANG−5N+11N+20B+6N+4B=1N−2B=7N+12B6.045.046.027.252240-6.8
4Beukes, Dante MIM2266NAM+12B+9N+5B=1N−3N=8B=6N=2N=7B5.546.551.030.002229-6.6
5Sonhy, JaimeCM2012ANG+3B+10N−4N=8B+7N−2N+15B−1N+11B5.545.549.027.002278+123.2
6Prospero, Alexandre2091ANG+19N=8B=7N−3B+13B=10N=4B+15N=1B5.541.544.024.002183+21.6
7Santos, LutherFM2116ANG+21B−1N=6B+15N−5B+16N+8N=3B=4N5.541.541.520.502183+12.2
8Mhango, BaneleFM2289RSA+15B=6N+10B=5N=1B=4N−7B+14N−2B5.044.548.023.752177-25.4
9Dias, Vanderson2070ANG+18B−4B=13N+17N=2B−11N=12B+16N=10B5.037.540.019.751965-15.8
10Simoes, JoaoCM2134ANG+16N−5B−8N+18B=14N=6B+13N=11B=9N5.036.539.019.252015-20.8
11Junior, DomingosFM2186ANG=13N−3B=14N+21B+12N+9B−1B=10N−5N4.540.540.515.752040-29.8
12Sousa, Estevao2009ANG−4N+16B+18N−2B−11B+17N=9N+20B−3N4.537.538.513.001909-14.4
13Wela, Nsimba1554ANG=11B=15N=9B=14B−6N+18N−10BF+19N4.032.032.013.251830+60.8
14Alberto, ManuelFM2068ANG−1B+21N=11B=13N=10B−15NF−8B+18N3.531.531.59.251911-22.6
15Cambando, JoseCM2037ANG−8N=13B+19N−7B+21N+14B−5N−6BF3.531.531.58.001843-28.2
16Antonio, Divino0ANG−10B−12N=17BF+19N−7B+20N−9B+21B3.527.027.05.2516280.0
17Yaron D. J. Almeida1640ANG−2N=19B=16N−9BF−12B+21N=18B+20N3.526.026.05.251230-10.4
18Matondo, Nzuzi0ANG−9NF−12B−10N+20B−13B+19N=17N−14B2.529.029.05.2515120.0
19Gildo Celestina0ANG−6B=17N−15B+20N−16BF−18B+21N−13B2.523.523.52.7515090.0
20FIDE 101237500—F−2B−3N−19B−18N+21B−16B−12N−17B1.029.529.50.0012240.0
21FIDE 101237920—−7N−14BF−11N−15B−20N−17B−19B−16N0.027.527.50.0012100.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
2025 ZONE 4.5 AFRICA CHESS CHAMPIONSHIPS OPEN — SOYO, Angola | Chess Tournament Results | ChessStats