Chess South Africa Ratings Database

PLAYER PAGE

Personal

Krog, G (Gerhard)

Chess SA id

1130144857

FIDE id

Date of birth

2013-07-13 (U14)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-16

Personal details last changed

2025-05-10

Junior GPX Games

Junior GPX Points

1257.3

Item	Main	Standard	Rapid	Blitz
Rating	1303.7	1302	1200	1200
Raw rating	1277.7	1282.8	1200	1200
Weighted rating	1229.1	1228.1	1200	1200
Weighted performance	1303.7	1302	0	0
Floor	777.7	782.8	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	148.4	147.4	165.8	165.8
Highest rating	1349.5 2024-10-01	1347.2 2024-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1277.7 2025-09-01	1282.8 2025-09-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1268.9 2023-09-01	1266 2023-09-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1349.5 2024-10-01	1347.2 2024-10-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.5	-0.5	0	0
New rating	1303.3	1301.6	1200	1200
Analysis
Rating	1303.7	1302	1200	1200
Raw rating	1277.7	1282.8	1200	1200
Weighted rating	1229.1	1228.1	1200
Weighted performance	1303.7	1302	0
K-factor	36	36	36	36
Floor	777.7	782.8	700	700
Max/Min rating change allowed	148.4	147.4	165.8	165.8
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	1277.7	1282.8	1200	1200
New weighted rating	1235	1234.7	1200	1200
New weighted performance	1303.3	1301.6	0	0
Temp new rating	1303.3	1301.6	1200	1200
Temp new rating +/-	-0.5	-0.5	0	0
Final new rating +/-	-0.5	-0.5	0	0
New rating	1303.3	1301.6	1200	1200
New K-factor	36	36	36	36
New floor	777.7	782.8	700	700

Item	Main	Standard
	0	0
	42	42
	41	41
	20	20
	5	5
	0	0
History	108	108

Games since
	Main 83	Standard 83		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3158		1056		374
Male	2488		831		288
U14	590		188		60
U14 Male	433		139		44
Standard
	RSA		Province		Region
Overall	3043		1094		417
Male	2394		866		325
U14	573		193		69
U14 Male	413		144		50
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-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	42	22.5	53.57	30.4	1236.1	1266.5
Standard	42	22.5	53.57	30.4	1236.1	1266.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	108	52.5	48.61	-11.8	1228.1	1216.3
Standard	108	52.5	48.61	-11.8	1228.1	1216.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1277.7	1282.8	1200	1200
2025-09-01	1277.7	1282.8	1200	1200
2025-08-01	1270.5	1271.4	1200	1200
2025-07-01	1263.5	1262.6	1200	1200
2025-06-01	1263.5	1262.6	1200	1200
2025-05-01	1253.3	1249.6	1200	1200
2025-04-01	1253.3	1249.6	1200	1200
2025-03-01	1253.3	1249.6	1200	1200
2025-02-01	1268.9	1266	1200	1200
2025-01-01	1215.6	1218.9	1200	1200
2024-12-01	1212.6	1218.2	1200	1200
2024-11-01	1212.6	1218.2	1200	1200
2024-10-01	1181.5	1180.8	1200	1200
2024-09-01	1180.8	1183	1200	1200
2024-08-01	1146.7	1140.5	1200	1200
2024-07-01	1118.6	1105.2	1200	1200
2024-06-01	1158.6	1154.2	1200	1200
2024-08-01	1132.9	1121.4	1200	1200
2024-04-01	1132.9	1121.4	1200	1200
2024-03-01	1132.9	1121.4	1200	1200
2024-02-01	1128.8	1114.9	1200	1200
2024-01-01	1180.5	1178.6	1200	1200
2023-12-01	1180.5	1178.6	1200	1200
2023-11-01	1180.5	1178.6	1200	1200

Comming soon.

Tournaments

History

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 Tshwane North District CLOSED Team Championships (D3) (U11)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U12)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	2.5	Yes	Analysis
3	2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U11)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Tshwane North School District CLOSED Individual Chess Championship (U11 Open)	2025-05-24	2025-05-24	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U11 Open)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
6	2025 Silver Lakes Chess Club Open Chess Tournament (D)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
7	2025 Piet Robbertse Fide Rated Open Chess Tournament (D)	2025-02-01	2025-02-02	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
8	2025 Tshwane Chess OPEN Registration Tournament (U12)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Tshwane North District CLOSED Team Championships (D3) (U11)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U12)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	2.5	Yes	Analysis
3	2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U11)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Tshwane North School District CLOSED Individual Chess Championship (U11 Open)	2025-05-24	2025-05-24	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U11 Open)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
6	2025 Silver Lakes Chess Club Open Chess Tournament (D)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
7	2025 Piet Robbertse Fide Rated Open Chess Tournament (D)	2025-02-01	2025-02-02	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
8	2025 Tshwane Chess OPEN Registration Tournament (U12)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
9	Gauteng Inter-Region at UJ 2024 (U12 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
10	Gauteng Top Schools 2024 (Primary Reserves)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	2	2	Yes	Analysis
11	2024 Etienne Lewis (U12)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	7	2.5	Yes	Analysis
12	2024 Tshwane North School District Team League Finals (U11)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	2024 Tshwane North School District Cluster 4 & 5 Team League (U11)	2024-07-20	2024-07-20	Standard	Tshwane (GTP)	3	3	1.5	Yes	Analysis
14	2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (D)	2024-06-01	2024-06-01	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
15	District 3 Cluster 4 and 5 Individuals 2024 (U11 Boys)	2024-05-04	2024-05-04	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
16	2024 Piet Robbertse Open Chess Tournament (D2)	2024-02-03	2024-02-04	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
17	2024 Tshwane Chess OPEN Registration Tournament (D1)	2024-01-27	2024-01-27	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
18	2023 Centurion Chess Open (E)	2023-09-23	2023-09-23	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
19	2023 Alekhine Open Tournament (E+F)	2023-09-09	2023-09-09	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
20	2023 Tshwane North School District CLOSED League Championships (D3)	2023-08-12	2023-08-12	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
21	2023 Tshwane North School District CLOSED Individual Championships (D3)	2023-05-13	2023-05-13	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
22	Tuks Junior Developmental Tournament 2022 (Yellow)	2022-08-06	2022-08-06	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2023 Tshwane North School District CLOSED Individual Championships				Tournament 2023 Tshwane North School District CLOSED League Championships
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Maphiri, J (Jan)				Opponent Raphiri, P (Poelano)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5
		date 2025-05-03	rnd 5	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent Rakotonarivo, F (Fanomezantsoa Raphae)
3	3	Tournament 2025 Etienne Lewis Closed Chess Tournament				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-08-10	rnd 7	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Leshabane, L (Lesego)				Opponent Mostert, M (Matthew)

#	Games	Start				End
1	6	Tournament 2023 Tshwane North School District CLOSED Individual Championships				Tournament 2023 Tshwane North School District CLOSED League Championships
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Maphiri, J (Jan)				Opponent Raphiri, P (Poelano)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5
		date 2025-05-03	rnd 5	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent Rakotonarivo, F (Fanomezantsoa Raphae)
3	3	Tournament 2025 Etienne Lewis Closed Chess Tournament				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-08-10	rnd 7	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Leshabane, L (Lesego)				Opponent Mostert, M (Matthew)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2023 Tshwane North School District CLOSED Individual Championships				Tournament 2023 Tshwane North School District CLOSED League Championships
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Maphiri, J (Jan)				Opponent Raphiri, P (Poelano)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5
		date 2025-05-03	rnd 5	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent Rakotonarivo, F (Fanomezantsoa Raphae)
3	3	Tournament 2025 Etienne Lewis Closed Chess Tournament				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-08-10	rnd 7	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Leshabane, L (Lesego)				Opponent Mostert, M (Matthew)

#	Games	Start				End
1	6	Tournament 2023 Tshwane North School District CLOSED Individual Championships				Tournament 2023 Tshwane North School District CLOSED League Championships
		date 2023-05-13	rnd 2	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Maphiri, J (Jan)				Opponent Raphiri, P (Poelano)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5
		date 2025-05-03	rnd 5	type Standard	result 1	date 2025-05-10	rnd 3	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent Rakotonarivo, F (Fanomezantsoa Raphae)
3	3	Tournament 2025 Etienne Lewis Closed Chess Tournament				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-08-10	rnd 7	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Leshabane, L (Lesego)				Opponent Mostert, M (Matthew)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

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	Raphiri ,P (Poelano)	2	2	425	2	2	425	0	0	0	0	0	0
1	Raphiri ,P (Poelano)	2	1141.1	1566.1	2	1130.7	1566.1	0	0	0	0	0	0
2	Roux ,N (Noah)	2	2	425	2	2	425	0	0	0	0	0	0
2	Roux ,N (Noah)	2	1136.4	1561.4	2	1133.2	1561.4	0	0	0	0	0	0
3	Ebersohn ,G (Gerhard)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Ebersohn ,G (Gerhard)	2	1458.9	1033.9	2	1457.4	1033.9	0	0	0	0	0	0
4	Peenz ,M (Marnus)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Peenz ,M (Marnus)	2	1198.3	773.3	2	1197.6	773.3	0	0	0	0	0	0
5	Haupt ,A (Abigail)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	Haupt ,A (Abigail)	2	1281.3	1493.8	2	1280.8	1493.8	0	0	0	0	0	0
6	Marais ,L (Luke)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Marais ,L (Luke)	2	1270.7	845.7	2	1275.3	845.7	0	0	0	0	0	0
7	Venter ,A (Amile)	2	2	425	2	2	425	0	0	0	0	0	0
7	Venter ,A (Amile)	2	1170.7	1595.7	2	1172.8	1595.7	0	0	0	0	0	0
8	Oosthuizen ,R (Roscher)	2	1	0	2	1	0	0	0	0	0	0	0
8	Oosthuizen ,R (Roscher)	2	1212.4	1212.4	2	1215.6	1212.4	0	0	0	0	0	0
9	Mamphweli ,T (Tshedza)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
9	Mamphweli ,T (Tshedza)	2	1179.3	1391.8	2	1161.4	1391.8	0	0	0	0	0	0
10	Grobbelaar ,M (Mienje)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Grobbelaar ,M (Mienje)	2	1340	915	2	1344	915	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Krog, G (Gerhard)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms