Chess South Africa Ratings Database

PLAYER PAGE

Personal

Gerber, Z (Zoe)

Chess SA id

2160143809

FIDE id

14371820

Date of birth

2016-03-01 (U12)

Gender

Female

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1455.4	1456.2	1200	1094.8
Raw rating	1382.1	1387.7	1200	1094.8
Weighted rating	1207.3	1201.2	1200	1094.1
Weighted performance	1455.4	1456.2	0	0
Floor	882.1	887.7	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	127.9	126.9	165.8	192.6
Highest rating	1455.4 2026-01-01	1456.2 2026-01-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1382.1 2026-01-01	1387.7 2026-01-01	1200 2024-03-01	1200 2019-12-01
Highest weighted rating	1211.1 2018-10-01	1243.6 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1455.4 2026-01-01	1456.2 2026-01-01	1200 2024-03-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-9.6	-9.6	-0	0
New rating	1445.8	1446.5	1200	1094.8
Analysis
Rating	1455.4	1456.2	1200	1094.8
Raw rating	1382.1	1387.7	1200	1094.8
Weighted rating	1207.3	1201.2	1200
Weighted performance	1455.4	1456.2	0
K-factor	36	36	36	36
Floor	882.1	887.7	700	700
Max/Min rating change allowed	127.9	126.9	165.8	192.6
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	1382.1	1387.7	1200	1094.8
New weighted rating	1224.9	1219.7	1200	1094.2
New weighted performance	1445.8	1446.5	0	0
Temp new rating	1445.8	1446.5	1200	1094.8
Temp new rating +/-	-9.6	-9.6	-0	0
Final new rating +/-	-9.6	-9.6	-0	0
New rating	1445.8	1446.5	1200	1094.8
New K-factor	36	36	36	36
New floor	882.1	887.7	700	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	60	54	6	0
	47	47	0	0
	57	43	0	14
	27	27	0	0
	0	0	0	0
History	191	171	6	14

Games since
	Main 107	Standard 101		Rapid 6		Blitz 0
Gender	Female
Age group	U10
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	2770		952		285
Female	512		182		42
U10	211		89		27
U10 Female	36		11		4
Standard
	RSA		Province		Region
Overall	2706		988		279
Female	498		179		43
U10	215		95		30
U10 Female	33		11		5
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 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	60	27	45	-42.5	1307.1	1264.6
Standard	54	24	44.44	-47.2	1313.3	1266.1
Rapid	6	3	50	0	1251	1251
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	191	77.5	40.58	-80.1	1232.7	1152.6
Standard	171	68.5	40.06	-84.5	1233.1	1148.6
Rapid	6	3	50	0	1251	1251
Blitz	14	6	42.86	-60.7	1220.4	1159.7

Date	Main	Standard	Rapid	Blitz
2026-01-01	1382.1	1387.7	1200	1094.8
2025-11-30	1310.6	1300.6	1200	1094.8
2025-11-01	1310.6	1300.6	1200	1094.8
2025-09-30	1302.3	1288.7	1200	1094.8
2025-09-01	1266.4	1246.6	1200	1094.8
2025-08-01	1263.5	1237.7	1200	1094.8
2025-07-01	1166.2	1155.9	1199.8	1094.8
2025-06-01	1164.5	1169.4	1200	1094.8
2025-05-01	1142.3	1146	1200	1094.8
2025-04-01	1142.3	1146	1200	1094.8
2025-03-01	1118.2	1115.8	1200	1094.8
2025-02-01	1118.6	1114.7	1200	1094.8
2025-01-01	1118.6	1109.7	1200	1092
2024-12-01	1124.4	1119.1	1200	1092
2024-11-01	1124.4	1119.1	1200	1092
2024-10-01	1142.9	1140.7	1200	1092
2024-09-01	1142.9	1140.7	1200	1092
2024-11-01	1137.8	1134.6	1200	1092
2024-07-01	1109.3	1116.2	1200	1092
2024-06-01	1066.3	1064	1200	1092
2024-05-01	1053	1052.1	1200	1092
2024-04-01	1053	1052.1	1200	1092
2024-03-01	1053	1052.1	1200	1092
2024-02-01	1053	1052.1	1200	1092

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Mzansi Inter Provincial Team Championships (U10 Combined)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	6	6	Yes	Analysis
2	Gauteng Inter-Region at Emerald Resort 2025 (U8+U10 Girls)	2025-12-06	2025-12-07	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
3	2025 Laerskool Doringkloof Primary Open Chess Tournament (U8+U10)	2025-10-25	2025-10-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	GoForChess Junior Chess Championships 2025 (U10)	2025-09-14	2025-09-14	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
5	JMC Closed 2025 (U10)	2025-08-09	2025-08-09	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
6	JMC - Trinity Randpark Ridge 2025 (U10)	2025-07-26	2025-07-26	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
7	South African Open 2025 (U10 Girls)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
8	JMC Helpmekaar 2025 (U10)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	4	1	Yes	Analysis
9	JMC Blairgowrie Rapid 2025 (U8+U10)	2025-06-08	2025-06-08	Rapid	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
10	JMC Crawford Sandton 2025 (U10)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
11	2nd Knight Riders Junior Open 2025 (D)	2025-03-23	2025-03-23	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
12	2nd Knight Riders Junior Open 2025 (U10)	2025-03-23	2025-03-23	Standard	Johannesburg Metro (GJM)	5	0	0	No	Analysis
13	Chess Power House March Open 2025 (E)	2025-03-22	2025-03-22	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
14	MCA Summer March 2025 (Newcomer)	2025-03-08	2025-03-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
15	JMC Kick Off 2025 (Female)	2025-02-02	2025-02-02	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
16	Gauteng Inter-Region at UJ 2024 (U10 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
17	Gauteng Top Schools 2024 (U13 Girls)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	4	1	Yes	Analysis
18	JMC Closed 2024 (U10)	2024-08-09	2024-08-09	Standard	Johannesburg Metro (GJM)	5	4	1	Yes	Analysis
19	Fourth Knight Riders Juniors Open Chess Tournament 204 (U10)	2024-08-03	2024-08-03	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
20	2024 Midstream College Open Chess Tournament (U10)	2024-07-20	2024-07-20	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
21	JMC Trinityhouse Randpark Ridge 2024 (U10)	2024-07-13	2024-07-13	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
22	Second Knight Riders Juniors Open Chess Tournament 2024 (U10)	2024-06-08	2024-06-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
23	South African Junior Closed Chess Championship 2024 (U8 Girls)	2024-04-27	2024-05-01	Standard	Ekurhuleni (GE)	9	8	3	Yes	Analysis
24	2024 Gauteng Inter-Region Chess Championship (U8+U10 Girls)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
25	JMC Kick Off Tournament 2024 (U10)	2024-01-28	2024-01-28	Standard	Johannesburg Metro (GJM)	5	4	1	Yes	Analysis
26	2023 Woman's Day Open Chess Tournament (Bishop)	2023-08-09	2023-08-09	Standard	Tshwane (GTP)	5	4	1.5	Yes	Analysis
27	JMC Closed Aug 2023 (U8)	2023-08-04	2023-08-06	Standard	Johannesburg Metro (GJM)	6	5	1	Yes	Analysis
28	JMC - The Higher Ground Restaurant 2nd Blitz Event 2023	2023-07-30	2023-07-30	Blitz	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
29	Wynie Robbertse Open Tournament 2023 (F)	2023-06-03	2023-06-03	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
30	JMC Blitz - Higher Ground 2023	2023-06-17	2023-06-17	Blitz	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
31	JNW Open - Trinityhouse Little Falls 2023 (U8)	2023-05-13	2023-05-13	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
32	2023 South African Junior Closed Chess Championships (U8 Girls)	2023-03-31	2023-04-04	Standard	Chess South Africa (CSA)	9	9	1.5	Yes	Analysis
33	Chris Greyling Open Tournament 2023 (F)	2023-03-21	2023-03-21	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
34	JMC 1 St Peters 2023 (U8)	2023-03-18	2023-03-18	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
35	2023 Piet Robbertse Fide Rated Open Chess Tournament (F)	2023-02-04	2023-02-04	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
36	2022 South African Junior Wild Card Chess Championships (U8 Girls)	2022-12-09	2022-12-12	Standard	4 Knights (4K)	7	7	0.5	Yes	Analysis
37	2022 South African Junior Team Chess Championships (U8 Open+Girls)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	5	2	Yes	Analysis
38	JMC 3rd Trials 2022 (U8)	2022-09-11	2022-09-11	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
39	Chessheroes Junior Challenge 2022 (U7)	2022-08-13	2022-08-13	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
40	JMC Trials 1 - Laerskool Fontainebleau 2022 (U8)	2022-07-24	2022-07-24	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mkulisi, A (Asavela)				Opponent Mwambazi, J (James)
2	3	Tournament Wynie Robbertse Open Tournament 2023				Tournament Wynie Robbertse Open Tournament 2023
		date 2023-06-03	rnd 3	type Standard	result 1	date 2023-06-03	rnd 5	type Standard	result 1
		Opponent Lekalakala, T (Tshimologo)				Opponent Koorts, L (Lukas)
3	3	Tournament JNW Open - Trinityhouse Little Falls 2023				Tournament JNW Open - Trinityhouse Little Falls 2023
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-05-13	rnd 4	type Standard	result 1
		Opponent Strydom, M (Mikayla)				Opponent Du Pisani, M (Malcom)

#	Games	Start				End
1	3	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mkulisi, A (Asavela)				Opponent Mwambazi, J (James)
2	3	Tournament Wynie Robbertse Open Tournament 2023				Tournament Wynie Robbertse Open Tournament 2023
		date 2023-06-03	rnd 3	type Standard	result 1	date 2023-06-03	rnd 5	type Standard	result 1
		Opponent Lekalakala, T (Tshimologo)				Opponent Koorts, L (Lukas)
3	3	Tournament JNW Open - Trinityhouse Little Falls 2023				Tournament JNW Open - Trinityhouse Little Falls 2023
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-05-13	rnd 4	type Standard	result 1
		Opponent Strydom, M (Mikayla)				Opponent Du Pisani, M (Malcom)

#	Games	Start				End
1	2	Tournament JMC Blairgowrie Rapid 2025				Tournament JMC Blairgowrie Rapid 2025
		date 2025-06-08	rnd 2	type Rapid	result 1	date 2025-06-08	rnd 3	type Rapid	result 1
		Opponent Killian, C (Cara)				Opponent Mhlomi, L (Lonwabile)
2	1	Tournament JMC Blairgowrie Rapid 2025				Tournament JMC Blairgowrie Rapid 2025
		date 2025-06-08	rnd 5	type Rapid	result 1	date 2025-06-08	rnd 5	type Rapid	result 1
		Opponent Mfazwe, P (Phumla)				Opponent Mfazwe, P (Phumla)

#	Games	Start				End
1	2	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 6	type Blitz	result 1	date 2023-06-17	rnd 7	type Blitz	result 1
		Opponent Ebrahim, Z (Zaaheda)				Opponent Dippenaar, L (Lian)
2	1	Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023				Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023
		date 2023-07-30	rnd 7	type Blitz	result 1	date 2023-07-30	rnd 7	type Blitz	result 1
		Opponent Stelloh, A (Alexander)				Opponent Stelloh, A (Alexander)
3	1	Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023				Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023
		date 2023-07-30	rnd 5	type Blitz	result 1	date 2023-07-30	rnd 5	type Blitz	result 1
		Opponent Vermaak, C (Cameron)				Opponent Vermaak, C (Cameron)

#	Games	Start				End
1	3	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mkulisi, A (Asavela)				Opponent Mwambazi, J (James)
2	3	Tournament Wynie Robbertse Open Tournament 2023				Tournament Wynie Robbertse Open Tournament 2023
		date 2023-06-03	rnd 3	type Standard	result 1	date 2023-06-03	rnd 5	type Standard	result 1
		Opponent Lekalakala, T (Tshimologo)				Opponent Koorts, L (Lukas)
3	3	Tournament JNW Open - Trinityhouse Little Falls 2023				Tournament JNW Open - Trinityhouse Little Falls 2023
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-05-13	rnd 4	type Standard	result 1
		Opponent Strydom, M (Mikayla)				Opponent Du Pisani, M (Malcom)

#	Games	Start				End
1	3	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mkulisi, A (Asavela)				Opponent Mwambazi, J (James)
2	3	Tournament Wynie Robbertse Open Tournament 2023				Tournament Wynie Robbertse Open Tournament 2023
		date 2023-06-03	rnd 3	type Standard	result 1	date 2023-06-03	rnd 5	type Standard	result 1
		Opponent Lekalakala, T (Tshimologo)				Opponent Koorts, L (Lukas)
3	3	Tournament JNW Open - Trinityhouse Little Falls 2023				Tournament JNW Open - Trinityhouse Little Falls 2023
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-05-13	rnd 4	type Standard	result 1
		Opponent Strydom, M (Mikayla)				Opponent Du Pisani, M (Malcom)

#	Games	Start				End
1	2	Tournament JMC Blairgowrie Rapid 2025				Tournament JMC Blairgowrie Rapid 2025
		date 2025-06-08	rnd 2	type Rapid	result 1	date 2025-06-08	rnd 3	type Rapid	result 1
		Opponent Killian, C (Cara)				Opponent Mhlomi, L (Lonwabile)
2	1	Tournament JMC Blairgowrie Rapid 2025				Tournament JMC Blairgowrie Rapid 2025
		date 2025-06-08	rnd 5	type Rapid	result 1	date 2025-06-08	rnd 5	type Rapid	result 1
		Opponent Mfazwe, P (Phumla)				Opponent Mfazwe, P (Phumla)

#	Games	Start				End
1	2	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 6	type Blitz	result 1	date 2023-06-17	rnd 7	type Blitz	result 1
		Opponent Ebrahim, Z (Zaaheda)				Opponent Dippenaar, L (Lian)
2	1	Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023				Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023
		date 2023-07-30	rnd 7	type Blitz	result 1	date 2023-07-30	rnd 7	type Blitz	result 1
		Opponent Stelloh, A (Alexander)				Opponent Stelloh, A (Alexander)
3	1	Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023				Tournament JMC - The Higher Ground Restaurant 2nd Blitz Event 2023
		date 2023-07-30	rnd 5	type Blitz	result 1	date 2023-07-30	rnd 5	type Blitz	result 1
		Opponent Vermaak, C (Cameron)				Opponent Vermaak, C (Cameron)

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Badat ,M (Mikaeel)	5	1	-255	5	1	-255	0	0	0	0	0	0
1	Badat ,M (Mikaeel)	5	1321.6	1066.6	5	1313.5	1066.6	0	0	0	0	0	0
2	Meijer ,CM (Carlo Marius)	5	0	-425	5	0	-425	0	0	0	0	0	0
2	Meijer ,CM (Carlo Marius)	5	1367.1	942.1	5	1359.8	942.1	0	0	0	0	0	0
3	Deysel ,Z (Zachariah)	5	1.5	-170	5	1.5	-170	0	0	0	0	0	0
3	Deysel ,Z (Zachariah)	5	1043.1	873.1	5	1032.5	873.1	0	0	0	0	0	0
4	Steyn ,M (Mari-Louise)	4	0	-425	4	0	-425	0	0	0	0	0	0
4	Steyn ,M (Mari-Louise)	4	1214.1	789.1	4	1210.8	789.1	0	0	0	0	0	0
5	Pelser ,A (Aidan)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
5	Pelser ,A (Aidan)	4	1285.6	1073.1	4	1288.7	1073.1	0	0	0	0	0	0
6	Loots ,A (Albert)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
6	Loots ,A (Albert)	3	1159	1017.3	3	1155.2	1017.3	0	0	0	0	0	0
7	Brooks ,J (Joshua)	3	3	425	3	3	425	0	0	0	0	0	0
7	Brooks ,J (Joshua)	3	1113.7	1538.7	3	1095.6	1538.7	0	0	0	0	0	0
8	Strydom ,M (Mikayla)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
8	Strydom ,M (Mikayla)	3	1049.5	1332.8	3	1032.4	1332.8	0	0	0	0	0	0
9	Du Pisani ,M (Malcolm)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
9	Du Pisani ,M (Malcolm)	3	1327.8	1186.1	3	1326.4	1186.1	0	0	0	0	0	0
10	Stelloh ,A (Alexander)	3	1	-141.7	2	0	-425	0	0	0	1	1	425
10	Stelloh ,A (Alexander)	3	1310.3	1168.6	2	1303.4	885.3	0	0	0	1	1125.6	1735.3

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Gerber, Z (Zoe)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms