Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Koker, C (Christiaan)

Chess SA id

110087167

FIDE id

Date of birth

2010-05-12 (U16)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-04-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1095.3	1077.2	1200	1200
Raw rating	1095.3	1077.2	1200	1200
Weighted rating	1095.3	1077.2	1200	1200
Weighted performance	352.4	350.9	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	192.5	197.5	165.8	165.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1095.3	1077.2	1200	1200
Analysis
Rating	1095.3	1077.2	1200	1200
Raw rating	1095.3	1077.2	1200	1200
Weighted rating	1095.3	1077.2	1200
Weighted performance	352.4	350.9	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	192.5	197.5	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	1095.3	1077.2	1200	1200
New weighted rating	1095.3	1077.2	1200	1200
New weighted performance	352.1	350.6	0	0
Temp new rating	1095.3	1077.2	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1095.3	1077.2	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	4	4
	0	0
History	29	29

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	24	9	37.5	-106.2	1142.7	1036.4
Standard	24	9	37.5	-106.2	1142.7	1036.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1095.3	1077.2	1200	1200
2025-09-01	1095.3	1077.2	1200	1200
2025-08-01	1095.3	1077.2	1200	1200
2025-07-01	1095.3	1077.2	1200	1200
2025-06-01	1095.3	1077.2	1200	1200
2025-05-01	1095.3	1077.2	1200	1200
2025-04-01	1095.3	1077.2	1200	1200
2025-03-01	1095.3	1077.2	1200	1200
2025-02-01	1095.3	1077.2	1200	1200
2025-01-01	1095.3	1077.2	1200	1200
2024-12-01	1095.3	1077.2	1200	1200
2024-11-01	1095.3	1077.2	1200	1200
2024-10-01	1095.3	1077.2	1200	1200
2024-09-01	1095.3	1077.2	1200	1200
2024-08-01	1095.3	1077.2	1200	1200
2024-07-01	1095.3	1077.2	1200	1200
2024-06-01	1095.3	1077.2	1200	1200
2024-08-01	1095.3	1077.2	1200	1200
2024-04-01	1095.3	1077.2	1200	1200
2024-03-01	1095.3	1077.2	1200	1200
2024-02-01	1095.3	1077.2	1200	1200
2024-01-01	1095.3	1077.2	1200	1200
2023-12-01	1095.3	1077.2	1200	1200
2023-11-01	1095.3	1077.2	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	Dirk De Koster Chess Open 2022 (D)	2022-04-23	2022-04-23	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis
2	D7 Primary School League 2019 (U9)	2019-08-03	2019-08-03	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
3	LS Voorwaarts & Dr P Hangelbroek Chess Open 2019 (E)	2019-08-31	2019-08-31	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
4	D7 Individuals 2019 (U9 Boys)	2019-05-04	2019-05-04	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	D7 Individual 2018 (U9 Boys)	2018-02-24	2018-02-24	Standard	Sedibeng (GSV)	5	5	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament D7 Primary School League 2019				Tournament LS Voorwaarts & Dr P Hangelbroek Chess Open 2019
		date 2019-08-03	rnd 4	type Standard	result 1	date 2019-08-31	rnd 1	type Standard	result 1
		Opponent Gloy, B (Bryan)				Opponent Raath, M (Meghan-Mari)
2	3	Tournament D7 Individuals 2019				Tournament D7 Individuals 2019
		date 2019-05-04	rnd 1	type Standard	result 1	date 2019-05-04	rnd 3	type Standard	result 1
		Opponent Kriel, I (Ivan)				Opponent Smit, R (Rynhardt)
3	1	Tournament Dirk De Koster Chess Open 2022				Tournament Dirk De Koster Chess Open 2022
		date 2022-04-23	rnd 5	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Klein, K (Kelly)				Opponent Klein, K (Kelly)

#	Games	Start				End
1	3	Tournament D7 Primary School League 2019				Tournament LS Voorwaarts & Dr P Hangelbroek Chess Open 2019
		date 2019-08-03	rnd 4	type Standard	result 1	date 2019-08-31	rnd 1	type Standard	result 1
		Opponent Gloy, B (Bryan)				Opponent Raath, M (Meghan-Mari)
2	3	Tournament D7 Individuals 2019				Tournament D7 Individuals 2019
		date 2019-05-04	rnd 1	type Standard	result 1	date 2019-05-04	rnd 3	type Standard	result 1
		Opponent Kriel, I (Ivan)				Opponent Smit, R (Rynhardt)
3	1	Tournament Dirk De Koster Chess Open 2022				Tournament Dirk De Koster Chess Open 2022
		date 2022-04-23	rnd 5	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Klein, K (Kelly)				Opponent Klein, K (Kelly)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament D7 Individuals 2019				Tournament D7 Individuals 2019
		date 2019-05-04	rnd 1	type Standard	result 1	date 2019-05-04	rnd 3	type Standard	result 1
		Opponent Kriel, I (Ivan)				Opponent Smit, R (Rynhardt)
2	1	Tournament Dirk De Koster Chess Open 2022				Tournament Dirk De Koster Chess Open 2022
		date 2022-04-23	rnd 5	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Klein, K (Kelly)				Opponent Klein, K (Kelly)
3	1	Tournament LS Voorwaarts & Dr P Hangelbroek Chess Open 2019				Tournament LS Voorwaarts & Dr P Hangelbroek Chess Open 2019
		date 2019-08-31	rnd 4	type Standard	result 1	date 2019-08-31	rnd 4	type Standard	result 1
		Opponent Bannerman, J (Jared)				Opponent Bannerman, J (Jared)

#	Games	Start				End
1	3	Tournament D7 Individuals 2019				Tournament D7 Individuals 2019
		date 2019-05-04	rnd 1	type Standard	result 1	date 2019-05-04	rnd 3	type Standard	result 1
		Opponent Kriel, I (Ivan)				Opponent Smit, R (Rynhardt)
2	1	Tournament Dirk De Koster Chess Open 2022				Tournament Dirk De Koster Chess Open 2022
		date 2022-04-23	rnd 5	type Standard	result 1	date 2022-04-23	rnd 5	type Standard	result 1
		Opponent Klein, K (Kelly)				Opponent Klein, K (Kelly)
3	1	Tournament LS Voorwaarts & Dr P Hangelbroek Chess Open 2019				Tournament LS Voorwaarts & Dr P Hangelbroek Chess Open 2019
		date 2019-08-31	rnd 4	type Standard	result 1	date 2019-08-31	rnd 4	type Standard	result 1
		Opponent Bannerman, J (Jared)				Opponent Bannerman, J (Jared)

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	Cronje ,E (Emile)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Cronje ,E (Emile)	2	905	480	2	900.3	480	0	0	0	0	0	0
2	Van Biljon ,J (Jessica)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Van Biljon ,J (Jessica)	2	1128	703	2	1120.9	703	0	0	0	0	0	0
3	Maseloane ,T (Tshepang)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
3	Maseloane ,T (Tshepang)	1	1146.9	1146.9	1	1133.6	1146.9	0	0	0	0	0	0
4	van der Walt ,K (Kiera)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	van der Walt ,K (Kiera)	1	1128.3	703.3	1	1114.4	703.3	0	0	0	0	0	0
5	Alberts ,D (Daniel)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Alberts ,D (Daniel)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	De Lange ,H (Henro)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	De Lange ,H (Henro)	1	1026.8	601.8	1	1012.4	601.8	0	0	0	0	0	0
7	De Rouwe ,ED (Eckhard)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	De Rouwe ,ED (Eckhard)	1	1256.3	831.3	1	1264.2	831.3	0	0	0	0	0	0
8	Posthumus ,E (Ethan)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Posthumus ,E (Ethan)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Bannerman ,J (Jared)	1	1	425	1	1	425	0	0	0	0	0	0
9	Bannerman ,J (Jared)	1	999.8	1424.8	1	976.5	1424.8	0	0	0	0	0	0
10	Van Der Westhuizen ,J (Janu)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Van Der Westhuizen ,J (Janu)	1	1025.3	600.3	1	1009.6	600.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

De Koker, C (Christiaan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms