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

2025-12-07

Personal details last changed

2025-05-10

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1272.5	1275.2	1200	1200
Raw rating	1272.5	1275.2	1200	1200
Weighted rating	1246.5	1246.9	1200	1200
Weighted performance	1265.5	1261.1	0	0
Floor	784	787.5	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	149.5	149	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	1284 2025-11-01	1287.5 2025-11-01	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	0	0	0
New rating	1272.5	1275.2	1200	1200
Analysis
Rating	1272.5	1275.2	1200	1200
Raw rating	1272.5	1275.2	1200	1200
Weighted rating	1246.5	1246.9	1200
Weighted performance	1265.5	1261.1	0
K-factor	36	36	36	36
Floor	784	787.5	700	700
Max/Min rating change allowed	149.5	149	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	1272.5	1275.2	1200	1200
New weighted rating	1251	1251.8	1200	1200
New weighted performance	1257	1252.6	0	0
Temp new rating	1272.5	1275.2	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1272.5	1275.2	1200	1200
New K-factor	36	36	36	36
New floor	784	787.5	700	700

Item	Main	Standard
	0	0
	47	47
	41	41
	20	20
	5	5
	0	0
History	113	113

Games since
	Main 88	Standard 88		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3409		1131		398
Male	2651		878		303
U14	644		208		69
U14 Male	464		146		50
Standard
	RSA		Province		Region
Overall	3296		1186		449
Male	2573		930		346
U14	620		215		78
U14 Male	438		151		53
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	47	25.5	54.26	36.2	1238.7	1274.9
Standard	47	25.5	54.26	36.2	1238.7	1274.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	113	55.5	49.12	-7.5	1229.6	1222
Standard	113	55.5	49.12	-7.5	1229.6	1222
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1272.5	1275.2	1200	1200
2025-11-30	1284	1287.5	1200	1200
2025-11-01	1284	1287.5	1200	1200
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
2024-11-01	1146.7	1140.5	1200	1200
2024-07-01	1118.6	1105.2	1200	1200
2024-06-01	1158.6	1154.2	1200	1200
2024-05-01	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

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	Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates)	2025-12-06	2025-12-07	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
2	2025 Gauteng Top Schools Teams (U11)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	2025 Tshwane North District CLOSED Team Championships (D3) (U11)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
4	2025 Etienne Lewis Closed Chess Tournament (U12)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	2.5	Yes	Analysis
5	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
6	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
7	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
8	2025 Silver Lakes Chess Club Open Chess Tournament (D)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
9	2025 Piet Robbertse Fide Rated Open Chess Tournament (D)	2025-02-01	2025-02-02	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
10	2025 Tshwane Chess OPEN Registration Tournament (U12)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
11	Gauteng Inter-Region at UJ 2024 (U12 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
12	Gauteng Top Schools 2024 (Primary Reserves)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	2	2	Yes	Analysis
13	2024 Etienne Lewis (U12)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	7	2.5	Yes	Analysis
14	2024 Tshwane North School District Team League Finals (U11)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
15	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
16	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
17	District 3 Cluster 4 and 5 Individuals 2024 (U11 Boys)	2024-05-04	2024-05-04	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
18	2024 Piet Robbertse Open Chess Tournament (D2)	2024-02-03	2024-02-04	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
19	2024 Tshwane Chess OPEN Registration Tournament (D1)	2024-01-27	2024-01-27	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
20	2023 Centurion Chess Open (E)	2023-09-23	2023-09-23	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
21	2023 Alekhine Open Tournament (E+F)	2023-09-09	2023-09-09	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
22	2023 Tshwane North School District CLOSED League Championships (D3)	2023-08-12	2023-08-12	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
23	2023 Tshwane North School District CLOSED Individual Championships (D3)	2023-05-13	2023-05-13	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
24	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 Tshwane North District CLOSED Team Championships (D3)				Tournament 2025 Gauteng Top Schools Teams
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-29	rnd 1	type Standard	result 1
		Opponent Raphiri, P (Poelano)				Opponent Crous, R (Ruvan)

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

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms