PLAYER PAGE

Personal

Kgame, O (Onalenna Itumeleng)

Chess SA id

2150144066

FIDE id

?

Date of birth

2015-11-26 (U12)

Gender

Female

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

No

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

92

Junior GPX Points

1304.9

Item Main Standard Rapid Blitz
Rating 1411.5 1405 1257.2 1141.6
Raw rating 1411.5 1405 1257.2 1141.6
Weighted rating 1387.9 1380 1246.7 1141.6
Weighted performance 1371.7 1366.4 0 0
Floor 1027.7 1031.9 757.2 700
K-factor 32 32 36 36
Min/Max rating change allowed 122.7 123.8 152.8 180.2
Highest rating 1544.1
2023-03-01
1548.4
2023-03-01
1467.5
2024-08-01
1200
2018-10-01
Highest raw rating 1527.7
2023-04-01
1531.9
2023-04-01
1257.2
2024-09-01
1200
2019-12-01
Highest weighted rating 1527.7
2024-05-01
1531.9
2024-05-01
1242.3
2025-08-01
1200
2018-10-01
Highest weighted performance 1544.1
2023-03-01
1548.4
2023-03-01
1467.5
2024-08-01
1200
2019-12-01

Prediction
Item Main Standard Rapid Blitz
Rating change 0 0 0 0
New rating 1411.5 1405 1257.2 1141.6
Analysis
Rating 1411.5 1405 1257.2 1141.6
Raw rating 1411.5 1405 1257.2 1141.6
Weighted rating 1387.9 1380 1246.7
Weighted performance 1371.7 1366.4 0
K-factor 32 32 36 36
Floor 1027.7 1031.9 757.2 700
Max/Min rating change allowed 122.7 123.8 152.8 180.2
Games 0 0 0 0
Score 0 0 0 0
Expected score 0 0 0 0
Score-Expected 0 0 0 0
Temp raw +/- 0 0 0 0
Final raw +/- 0 0 0 0
New raw rating 1411.5 1405 1257.2 1141.6
New weighted rating 1389.6 1381.7 1248.6 1141.6
New weighted performance 1371.2 1365.9 0 0
Temp new rating 1411.5 1405 1257.2 1141.6
Temp new rating +/- 0 0 0 0
Final new rating +/- 0 0 0 0
New rating 1411.5 1405 1257.2 1141.6
New K-factor 32 32 36 36
New floor 1027.7 1031.9 757.2 700

Item Main Standard Rapid Blitz
0 0 0 0
77 77 0 0
54 49 5 0
63 63 0 0
59 52 0 7
0 0 0 0
History 253 241 5 7

Games since
Main
136
Standard
131
Rapid
5
Blitz
0
Gender Female
Age group U12
Region Bojanala Platina (NBR)
Province Northwest (NW)
Main
RSA Province Region
Overall 2052 139 114
Female 341 21 18
U12 270 20 17
U12 Female 74 6 6
Standard
RSA Province Region
Overall 2000 146 116
Female 349 20 17
U12 261 21 18
U12 Female 71 6 6
Rapid
RSA Province Region
Overall -1 -1 -1
Female -1 -1 -1
U12 -1 -1 -1
U12 Female -1 -1 -1
Blitz
RSA Province Region
Overall -1 -1 -1
Female -1 -1 -1
U12 -1 -1 -1
U12 Female -1 -1 -1

Games Score % Dp AvgOpp Performance
Main 0 0 0 0 0 0
Standard 0 0 0 0 0 0
Rapid 0 0 0 0 0 0
Blitz 0 0 0 0 0 0
Games Score % Dp AvgOpp Performance
Main 77 43 55.84 49.7 1297.3 1347
Standard 77 43 55.84 49.7 1297.3 1347
Rapid 0 0 0 0 0 0
Blitz 0 0 0 0 0 0
History
Games Score % Dp AvgOpp Performance
Main 253 152.5 60.28 87.4 1262.3 1349.6
Standard 241 146.5 60.79 91.7 1262.6 1354.3
Rapid 5 4 80 255 1251.9 1506.9
Blitz 7 2 28.57 -182.1 1259.3 1077.2

Date Main Standard Rapid Blitz
2025-09-30 1411.5 1405 1257.2 1141.6
2025-09-01 1411.5 1405 1257.2 1141.6
2025-08-01 1411.5 1405 1257.2 1141.6
2025-07-01 1399.4 1395.3 1257.2 1141.6
2025-06-01 1379.4 1370.9 1257.2 1141.6
2025-05-01 1422.3 1420.9 1257.2 1141.6
2025-04-01 1398.6 1399 1257.2 1141.6
2025-03-01 1370 1361.3 1257.2 1141.6
2025-02-01 1377.8 1369.6 1257.2 1141.6
2025-01-01 1352.6 1336.2 1257.2 1141.6
2024-12-01 1352.6 1336.2 1257.2 1141.6
2024-11-01 1380 1369.8 1257.2 1141.6
2024-10-01 1351.6 1333.6 1257.2 1141.6
2024-09-01 1357.7 1338.1 1257.2 1141.6
2024-08-01 1364.8 1354.4 1200 1141.6
2024-07-01 1364.8 1354.4 1200 1141.6
2024-06-01 1364.8 1354.4 1200 1141.6
2024-08-01 1378.3 1368.5 1200 1141.6
2024-04-01 1378.3 1368.5 1200 1141.6
2024-03-01 1416.3 1419.7 1200 1141.6
2024-02-01 1441.9 1449.1 1200 1141.6
2024-01-01 1420.2 1427.3 1200 1141.6
2023-12-01 1420.2 1427.3 1200 1141.6
2023-11-01 1420.2 1427.3 1200 1141.6

Comming soon.

Tournaments

No tournaments found.
# Tournament Start End Type Host Rounds Games Score Cfr Analysis
# Tournament Start End Type Host Rounds Games Score Cfr Analysis
1 2025 Menlo Open (U12) 2025-07-26 2025-07-26 Standard Tshwane (GTP) 5 5 2.5 Yes Analysis
2 South African Open 2025 (U12 Girls) 2025-07-03 2025-07-05 Standard Johannesburg Metro (GJM) 5 5 4 Yes Analysis
3 West Rand Open 2.0 2025 (U12) 2025-06-07 2025-06-07 Standard West Rand (GWR) 5 5 4 Yes Analysis
4 Knight Riders Juniors Open Chess Tournament 2025 (D) 2025-05-24 2025-05-24 Standard Johannesburg Metro (GJM) 5 4 2 Yes Analysis
5 Bojanala's Circuit Championships 2 of 4 2025 (U12) 2025-05-17 2025-05-17 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
6 JMC Crawford Sandton 2025 (U12) 2025-05-10 2025-05-10 Standard Johannesburg Metro (GJM) 5 5 2 Yes Analysis
7 South African Junior Closed Chess Championships 2025 (U10 Girls) 2025-03-31 2025-04-05 Standard Cape Winelands (WCW) 9 9 5 Yes Analysis
8 Ekurhuleni Chess Open 2025 (D) 2025-03-15 2025-03-15 Standard Ekurhuleni (GE) 5 5 3 Yes Analysis
9 2025 Prestige Open Chess Tournament (U12) 2025-03-08 2025-03-08 Standard Tshwane (GTP) 5 5 3.5 Yes Analysis
10 Bojanala Circuit Championships 1 of 4 2025 (U12) 2025-03-01 2025-03-01 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
11 2025 KSNG Open (U12) 2025-02-22 2025-02-22 Standard Tshwane (GTP) 5 5 3 Yes Analysis
12 Bojanala's Battle In The Kloof 2025 (Knights) 2025-02-15 2025-02-15 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis
13 2025 Blou Bul Open Chess Tournament (D2) 2025-02-08 2025-02-08 Standard Tshwane (GTP) 5 5 2 Yes Analysis
14 Bojanala Closed Chess Championships 2025 (U10) 2025-01-31 2025-02-02 Standard Bojanala Platina (NBR) 5 4 1 Yes Analysis
15 Bojanala Wildcard 2025 (Knights) 2025-01-25 2025-01-25 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
Last 500 tournaments since 01 January 2018
# Tournament Start End Type Host Rounds Games Score Cfr Analysis
1 2025 Menlo Open (U12) 2025-07-26 2025-07-26 Standard Tshwane (GTP) 5 5 2.5 Yes Analysis
2 South African Open 2025 (U12 Girls) 2025-07-03 2025-07-05 Standard Johannesburg Metro (GJM) 5 5 4 Yes Analysis
3 West Rand Open 2.0 2025 (U12) 2025-06-07 2025-06-07 Standard West Rand (GWR) 5 5 4 Yes Analysis
4 Knight Riders Juniors Open Chess Tournament 2025 (D) 2025-05-24 2025-05-24 Standard Johannesburg Metro (GJM) 5 4 2 Yes Analysis
5 Bojanala's Circuit Championships 2 of 4 2025 (U12) 2025-05-17 2025-05-17 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
6 JMC Crawford Sandton 2025 (U12) 2025-05-10 2025-05-10 Standard Johannesburg Metro (GJM) 5 5 2 Yes Analysis
7 South African Junior Closed Chess Championships 2025 (U10 Girls) 2025-03-31 2025-04-05 Standard Cape Winelands (WCW) 9 9 5 Yes Analysis
8 Ekurhuleni Chess Open 2025 (D) 2025-03-15 2025-03-15 Standard Ekurhuleni (GE) 5 5 3 Yes Analysis
9 2025 Prestige Open Chess Tournament (U12) 2025-03-08 2025-03-08 Standard Tshwane (GTP) 5 5 3.5 Yes Analysis
10 Bojanala Circuit Championships 1 of 4 2025 (U12) 2025-03-01 2025-03-01 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
11 2025 KSNG Open (U12) 2025-02-22 2025-02-22 Standard Tshwane (GTP) 5 5 3 Yes Analysis
12 Bojanala's Battle In The Kloof 2025 (Knights) 2025-02-15 2025-02-15 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis
13 2025 Blou Bul Open Chess Tournament (D2) 2025-02-08 2025-02-08 Standard Tshwane (GTP) 5 5 2 Yes Analysis
14 Bojanala Closed Chess Championships 2025 (U10) 2025-01-31 2025-02-02 Standard Bojanala Platina (NBR) 5 4 1 Yes Analysis
15 Bojanala Wildcard 2025 (Knights) 2025-01-25 2025-01-25 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
16 Bojanala's Brink Of Activity 2024 (Knights) 2024-11-30 2024-11-30 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis
17 Bojanala's e4 In The Chapel 2024 (Knights) 2024-10-26 2024-10-26 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis
18 Bojanala's Circuit Championships 4 of 4 204 (U10) 2024-10-12 2024-10-12 Standard Bojanala Platina (NBR) 5 5 4 Yes Analysis
19 Bojanala Circuit Championships 3 of 4 2024 (U10) 2024-09-14 2024-09-14 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
20 Bojanala's FIDE In The Sparkling Waters 2024 (Junior Champs) 2024-08-17 2024-08-17 Standard Bojanala Platina (NBR) 5 5 2.5 Yes Analysis
21 Bojanala's Kings & Queens Rapid and Doubles 2024 (Center Pawns) 2024-08-10 2024-08-10 Rapid Bojanala Platina (NBR) 5 5 4 Yes Analysis
22 Spartan Bishops Chess Championships 2024 (Senior Pawns) 2024-05-04 2024-05-05 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
23 Bojanala Silwerrand's Rating Implosion 2024 (Knights) 2024-03-16 2024-03-16 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis
24 Schoemies' Kings & Queens 2024 (Center Pawns) 2024-03-02 2024-03-02 Standard Bojanala Platina (NBR) 5 4 3 Yes Analysis
25 Bojanala Closed Chess Championships Finals 2024 (U10) 2024-02-09 2024-02-11 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis
26 Bojanala Closed Chess Championships Stage 1 2024 (U10) 2024-01-27 2024-01-27 Standard Bojanala Platina (NBR) 5 5 4 Yes Analysis
27 West Rand vs Bojanala Inter-Regional Championships 2023 (U10) 2023-10-14 2023-10-14 Standard West Rand (GWR) 5 5 4 Yes Analysis
28 Bojanala's Spring Cleaning 2023 (Center Pawns) 2023-08-26 2023-08-26 Standard Bojanala Platina (NBR) 5 5 4 Yes Analysis
29 Bojanala's FIDE in the Sparkling Waters 2023 (Junior) 2023-07-29 2023-07-29 Standard Bojanala Platina (NBR) 6 6 3.5 Yes Analysis
30 Bojanala's Post-Exams 2023 (U10) 2023-06-24 2023-06-24 Standard Bojanala Platina (NBR) 5 5 3.5 Yes Analysis
31 2023 West Rand RHS Open (U10) 2023-06-10 2023-06-10 Standard West Rand (GWR) 5 5 3 Yes Analysis
32 Wynie Robbertse Open Tournament 2023 (E) 2023-06-03 2023-06-03 Standard Tshwane (GTP) 5 5 3 Yes Analysis
33 Olienpark - 2nd One for the Ages 2023 (U10) 2023-05-13 2023-05-13 Standard Bojanala Platina (NBR) 5 0 0 No Analysis
34 2023 Mid Gauteng Open Tournament (E) 2023-05-06 2023-05-06 Standard Tshwane (GTP) 5 5 2 Yes Analysis
35 2023 South African Junior Closed Chess Championships (U8 Girls) 2023-03-31 2023-04-04 Standard Chess South Africa (CSA) 9 8 3 Yes Analysis
36 Schoemies Kings & Queens 2023 (U10) 2023-03-18 2023-03-18 Standard Bojanala Platina (NBR) 5 5 5 Yes Analysis
37 Nories Make It Happen 2023 (U10) 2023-03-04 2023-03-04 Standard Bojanala Platina (NBR) 5 4 4 Yes Analysis
38 One For The Ages 2023 (U10) 2023-02-18 2023-02-18 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
39 Harties Wolf Pack 2023 (U10) 2023-01-21 2023-01-21 Standard Bojanala Platina (NBR) 5 5 3 Yes Analysis
40 2022 South African Junior Wild Card Chess Championships (U8 Girls) 2022-12-09 2022-12-12 Standard 4 Knights (4K) 7 7 6 Yes Analysis
41 2022 South African Junior Team Chess Championships (U8 Open+Girls) 2022-12-04 2022-12-08 Standard 4 Knights (4K) 7 7 4.5 Yes Analysis
42 West Rand vs Bojanala 2022 (U8+U10) 2022-11-05 2022-11-05 Standard Bojanala Platina (NBR) 5 5 4 Yes Analysis
43 FIDE at The King`s Gate 2.0 2022 (Junior) 2022-10-22 2022-10-22 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis
44 Chessheroes Bazaar Blitz 2022 2022-10-29 2022-10-29 Blitz Johannesburg Metro (GJM) 7 7 2 Yes Analysis
45 Larries The Final Wild Card Tournament 2022 (U8) 2022-09-17 2022-09-17 Standard Bojanala Platina (NBR) 5 4 3.5 Yes Analysis
46 Lebone II - Day of The Blue Army 2022 (U8) 2022-09-03 2022-09-03 Standard Bojanala Platina (NBR) 5 5 4 Yes Analysis
47 Bojanala SAJCC Trials 2022 (U8) 2022-09-23 2022-09-23 Standard Bojanala Platina (NBR) 5 5 3.5 Yes Analysis
48 Bojanala Chess Federation Wildcards 2022 (U8) 2022-08-20 2022-08-20 Standard Bojanala Platina (NBR) 5 5 3.5 Yes Analysis
49 Bojanala Chess Federation Clash of Schools 2022 (PS Development Juniors) 2022-07-23 2022-07-23 Standard Bojanala Platina (NBR) 4 4 2 Yes Analysis
50 2nd One For The Ages 2022 (U8) 2022-07-30 2022-07-30 Standard Bojanala Platina (NBR) 5 5 2 Yes Analysis

Top 3 Streaks

# Games Start End
1 11 Tournament
One For The Ages 2023
Tournament
2023 South African Junior Closed Chess Championships
date
2023-02-18
rnd
5
type
Standard
result
1
date
2023-03-31
rnd
1
type
Standard
result
1
Opponent
Siko, O (Omogolo Reatlegile)
Opponent
Steyn, M (Mari-Louise)
2 6 Tournament
Bojanala's Kings & Queens Rapid and Doubles 2024
Tournament
Bojanala's FIDE In The Sparkling Waters 2024
date
2024-08-10
rnd
2
type
Rapid
result
1
date
2024-08-17
rnd
2
type
Standard
result
1
Opponent
Botha, L (Lewan)
Opponent
Holtzhausen, D (Dihan)
3 6 Tournament
2022 South African Junior Team Chess Championships
Tournament
2022 South African Junior Wild Card Chess Championships
date
2022-12-08
rnd
7
type
Standard
result
1
date
2022-12-11
rnd
5
type
Standard
result
1
Opponent
Van Den Berg, D (Declan)
Opponent
Wolff, E (Emily)
# Games Start End
1 11 Tournament
One For The Ages 2023
Tournament
2023 South African Junior Closed Chess Championships
date
2023-02-18
rnd
5
type
Standard
result
1
date
2023-03-31
rnd
1
type
Standard
result
1
Opponent
Siko, O (Omogolo Reatlegile)
Opponent
Steyn, M (Mari-Louise)
2 6 Tournament
2022 South African Junior Team Chess Championships
Tournament
2022 South African Junior Wild Card Chess Championships
date
2022-12-08
rnd
7
type
Standard
result
1
date
2022-12-11
rnd
5
type
Standard
result
1
Opponent
Van Den Berg, D (Declan)
Opponent
Wolff, E (Emily)
3 6 Tournament
Lebone II - Day of The Blue Army 2022
Tournament
Bojanala SAJCC Trials 2022
date
2022-09-03
rnd
5
type
Standard
result
1
date
2022-09-23
rnd
1
type
Standard
result
1
Opponent
Tshotwana, A (Afika)
Opponent
Mogono, M (Manotshe)
# Games Start End
1 4 Tournament
Bojanala's Kings & Queens Rapid and Doubles 2024
Tournament
Bojanala's Kings & Queens Rapid and Doubles 2024
date
2024-08-10
rnd
2
type
Rapid
result
1
date
2024-08-10
rnd
5
type
Rapid
result
1
Opponent
Botha, L (Lewan)
Opponent
Van Heerden, Z (Zichvan)
# Games Start End
1 2 Tournament
Chessheroes Bazaar Blitz 2022
Tournament
Chessheroes Bazaar Blitz 2022
date
2022-10-29
rnd
4
type
Blitz
result
1
date
2022-10-29
rnd
5
type
Blitz
result
1
Opponent
Mpipi, S (Selabe)
Opponent
Kalala, B (Beni)
# Games Start End
1 11 Tournament
One For The Ages 2023
Tournament
2023 South African Junior Closed Chess Championships
date
2023-02-18
rnd
5
type
Standard
result
1
date
2023-03-31
rnd
1
type
Standard
result
1
Opponent
Siko, O (Omogolo Reatlegile)
Opponent
Steyn, M (Mari-Louise)
2 6 Tournament
2022 South African Junior Team Chess Championships
Tournament
2022 South African Junior Wild Card Chess Championships
date
2022-12-08
rnd
7
type
Standard
result
1
date
2022-12-11
rnd
5
type
Standard
result
1
Opponent
Van Den Berg, D (Declan)
Opponent
Wolff, E (Emily)
3 5 Tournament
Bojanala's Circuit Championships 4 of 4 204
Tournament
Bojanala's e4 In The Chapel 2024
date
2024-10-12
rnd
3
type
Standard
result
1
date
2024-10-26
rnd
2
type
Standard
result
1
Opponent
Dikane, L (Leano)
Opponent
Smit, H (Hesmia)
# Games Start End
1 11 Tournament
One For The Ages 2023
Tournament
2023 South African Junior Closed Chess Championships
date
2023-02-18
rnd
5
type
Standard
result
1
date
2023-03-31
rnd
1
type
Standard
result
1
Opponent
Siko, O (Omogolo Reatlegile)
Opponent
Steyn, M (Mari-Louise)
2 6 Tournament
2022 South African Junior Team Chess Championships
Tournament
2022 South African Junior Wild Card Chess Championships
date
2022-12-08
rnd
7
type
Standard
result
1
date
2022-12-11
rnd
5
type
Standard
result
1
Opponent
Van Den Berg, D (Declan)
Opponent
Wolff, E (Emily)
3 5 Tournament
Bojanala's Circuit Championships 4 of 4 204
Tournament
Bojanala's e4 In The Chapel 2024
date
2024-10-12
rnd
3
type
Standard
result
1
date
2024-10-26
rnd
2
type
Standard
result
1
Opponent
Dikane, L (Leano)
Opponent
Smit, H (Hesmia)
# Games Start End
1 4 Tournament
Bojanala's Kings & Queens Rapid and Doubles 2024
Tournament
Bojanala's Kings & Queens Rapid and Doubles 2024
date
2024-08-10
rnd
2
type
Rapid
result
1
date
2024-08-10
rnd
5
type
Rapid
result
1
Opponent
Botha, L (Lewan)
Opponent
Van Heerden, Z (Zichvan)
# Games Start End
1 2 Tournament
Chessheroes Bazaar Blitz 2022
Tournament
Chessheroes Bazaar Blitz 2022
date
2022-10-29
rnd
4
type
Blitz
result
1
date
2022-10-29
rnd
5
type
Blitz
result
1
Opponent
Mpipi, S (Selabe)
Opponent
Kalala, B (Beni)

Top 10 opponents most often played

# Opponent Main Standard Rapid Blitz
Gms Score Dp Gms Score Dp Gms Score Dp Gms Score Dp
Aor Prat Aor Prat Aor Prat Aor Prat
1 Nkabinde ,N (Nkazimulo) 6 1.5 -212.5 6 1.5 -212.5 0 0 0 0 0 0
1369.3 1156.8 1372.1 1156.8 0 0 0 0
2 Kruger ,T (Thinus Pieter) 6 5 283.3 6 5 283.3 0 0 0 0 0 0
1206 1489.3 1198.5 1489.3 0 0 0 0
3 Raputsoa ,B (Bohlale) 5 1 -255 5 1 -255 0 0 0 0 0 0
1420.1 1165.1 1414.9 1165.1 0 0 0 0
4 Maphoso ,B (Boithabiso) 4 3 212.5 4 3 212.5 0 0 0 0 0 0
1255.2 1467.7 1250.2 1467.7 0 0 0 0
5 Siko ,O (Omogolo Reatlegile) 4 4 425 4 4 425 0 0 0 0 0 0
1222.1 1647.1 1219 1647.1 0 0 0 0
6 Bantseke ,L (Lesedilamodimo) 4 1.5 -106.2 4 1.5 -106.2 0 0 0 0 0 0
1354.8 1248.5 1340.8 1248.5 0 0 0 0
7 Kotsokoane ,R (Reotshepile) 4 0 -425 3 0 -425 0 0 0 1 0 -425
1257.9 832.9 1229.9 832.9 0 0 1200 832.9
8 Smit ,H (Hesmia) 3 3 425 3 3 425 0 0 0 0 0 0
1250.2 1675.2 1244.2 1675.2 0 0 0 0
9 Changara ,A (Alvis Tafadzwa) 3 0 -425 3 0 -425 0 0 0 0 0 0
1402.3 977.3 1393.4 977.3 0 0 0 0
10 Steyn ,M (Mari-Louise) 3 2.5 283.3 3 2.5 283.3 0 0 0 0 0 0
1197.4 1480.8 1197.3 1480.8 0 0 0 0

Norms

No norms achieved.
# Norm Tournament Start End Rounds Games Score Details
© Chess South Africa