Chess South Africa Ratings Database

PLAYER PAGE

Personal

Lochner, C (Calitz)

Chess SA id

1170192183

FIDE id

Date of birth

2017-04-13 (U10)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-12-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1237.7	1237.2	1221.6	1200
Raw rating	1237.7	1237.2	1221.6	1200
Weighted rating	1229.2	1227.7	1221.4	1200
Weighted performance	1151.2	1151.4	0	0
Floor	749.5	748.8	721.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	157.1	157.3	160.8	165.8
Highest rating	1283 2024-02-01	1286.7 2024-02-01	1297.8 2024-03-01	1200 2024-02-01
Highest raw rating	1249.5 2025-06-01	1248.8 2025-06-01	1221.6 2024-04-01	1200 2024-02-01
Highest weighted rating	1249.5 2024-10-01	1248.8 2024-10-01	1221.6 2024-10-01	1200 2024-02-01
Highest weighted performance	1283 2024-02-01	1286.7 2024-02-01	1297.8 2024-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1237.7	1237.2	1221.6	1200
Analysis
Rating	1237.7	1237.2	1221.6	1200
Raw rating	1237.7	1237.2	1221.6	1200
Weighted rating	1229.2	1227.7	1221.4
Weighted performance	1151.2	1151.4	0
K-factor	36	36	36	36
Floor	749.5	748.8	721.6	700
Max/Min rating change allowed	157.1	157.3	160.8	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	1237.7	1237.2	1221.6	1200
New weighted rating	1229.8	1228.4	1221.5	1200
New weighted performance	1143.3	1143.5	0	0
Temp new rating	1237.7	1237.2	1221.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1237.7	1237.2	1221.6	1200
New K-factor	36	36	36	36
New floor	749.5	748.8	721.6	700

Item	Main	Standard	Rapid
	0	0	0
	34	34	0
	39	34	5
	0	0	0
	0	0	0
	0	0	0
History	73	68	5

Games since
	Main 73	Standard 68		Rapid 5		Blitz 0
Gender	Male
Age group	U10
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3917		1283		358
Male	2961		975		282
U10	360		129		37
U10 Male	275		108		30
Standard
	RSA		Province		Region
Overall	3853		1380		365
Male	2913		1055		285
U10	348		142		39
U10 Male	268		120		31
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	34	10.5	30.88	-162.5	1311.2	1148.7
Standard	34	10.5	30.88	-162.5	1311.2	1148.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	73	32	43.84	-52.4	1258.5	1206.1
Standard	68	29	42.65	-62.5	1262.9	1200.4
Rapid	5	3	60	85	1200	1285
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1237.7	1237.2	1221.6	1200
2025-11-30	1214	1210.6	1221.6	1200
2025-11-01	1214	1210.6	1221.6	1200
2025-09-30	1214	1210.6	1221.6	1200
2025-09-01	1214	1210.6	1221.6	1200
2025-08-01	1232.2	1231.6	1221.6	1200
2025-07-01	1230.2	1229.1	1221.6	1200
2025-06-01	1249.5	1248.8	1221.6	1200
2025-05-01	1230.2	1229.9	1221.6	1200
2025-04-01	1230.2	1229.9	1221.6	1200
2025-03-01	1223.3	1221.7	1221.6	1200
2025-02-01	1245.7	1242.7	1221.6	1200
2025-01-01	1245.7	1242.7	1221.6	1200
2024-12-01	1228.8	1226.5	1221.6	1200
2024-11-01	1228.8	1226.5	1221.6	1200
2024-10-01	1242.2	1245.2	1221.6	1200
2024-09-01	1242.2	1245.2	1221.6	1200
2024-11-01	1242.2	1245.2	1221.6	1200
2024-07-01	1242.2	1245.2	1221.6	1200
2024-06-01	1227.9	1225.4	1221.6	1200
2024-05-01	1227.9	1225.4	1221.6	1200
2024-04-01	1227.9	1225.4	1221.6	1200
2024-03-01	1216.3	1220.4	1200	1200
2024-02-01	1200	1200	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 (U10 Candidates)	2025-12-06	2025-12-07	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
2	JMC Closed 2025 (U10)	2025-08-09	2025-08-09	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
3	JMC Helpmekaar 2025 (U10)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	4	0.5	Yes	Analysis
4	JMC Crawford Sandton 2025 (U10)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
5	2025 Chris Greyling Open Chess Tournament (U10)	2025-03-15	2025-03-15	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
6	JMC Crawford Ruimsig 2025 (U10)	2025-03-01	2025-03-01	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
7	Knight Riders Open Chess Tournament 2025 (U10)	2025-02-22	2025-02-22	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
8	MCA Welcome 2025 (Junior)	2025-02-15	2025-02-15	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
9	Gauteng Inter-Region at UJ 2024 (U8 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
10	Fonteine Open 2024 (E)	2024-10-19	2024-10-19	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
11	Gauteng Top Schools 2024 (U9 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
12	JMC Closed 2024 (U8)	2024-08-09	2024-08-09	Standard	Johannesburg Metro (GJM)	5	0	0	No	Analysis
13	JMC Trinityhouse Little Falls 2024 (U8)	2024-06-02	2024-06-02	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
14	CPH St Andrew's Rapid 2024 (D)	2024-03-30	2024-03-30	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
15	1st Knights Open Tournament 2024 (U8)	2024-03-23	2024-03-23	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
16	JNW Open - Classic - Crawford 2024 (U8)	2024-03-09	2024-03-09	Standard	Johannesburg Metro (GJM)	5	4	1	Yes	Analysis
17	2024 Constantiapark Open (F)	2024-02-17	2024-02-17	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

#	Games	Start				End
1	5	Tournament JMC Trinityhouse Little Falls 2024				Tournament Gauteng Top Schools 2024
		date 2024-06-02	rnd 4	type Standard	result 1	date 2024-10-04	rnd 3	type Standard	result 0.5
		Opponent Dippenaar, L (Luka)				Opponent Wei, Y (Yuande)
2	4	Tournament CPH St Andrew's Rapid 2024				Tournament JMC Trinityhouse Little Falls 2024
		date 2024-03-30	rnd 3	type Rapid	result 1	date 2024-06-02	rnd 1	type Standard	result 1
		Opponent Serrao, L (Luke)				Opponent John, K (Kaitlyn Mary)
3	3	Tournament 1st Knights Open Tournament 2024				Tournament 1st Knights Open Tournament 2024
		date 2024-03-23	rnd 3	type Standard	result 1	date 2024-03-23	rnd 5	type Standard	result 1
		Opponent Malemane, A (Atlehang Faith)				Opponent Liu, C (Chuanze)

#	Games	Start				End
1	5	Tournament JMC Trinityhouse Little Falls 2024				Tournament Gauteng Top Schools 2024
		date 2024-06-02	rnd 4	type Standard	result 1	date 2024-10-04	rnd 3	type Standard	result 0.5
		Opponent Dippenaar, L (Luka)				Opponent Wei, Y (Yuande)
2	4	Tournament 1st Knights Open Tournament 2024				Tournament JMC Trinityhouse Little Falls 2024
		date 2024-03-23	rnd 3	type Standard	result 1	date 2024-06-02	rnd 1	type Standard	result 1
		Opponent Malemane, A (Atlehang Faith)				Opponent John, K (Kaitlyn Mary)
3	2	Tournament JMC Crawford Sandton 2025				Tournament JMC Crawford Sandton 2025
		date 2025-05-10	rnd 4	type Standard	result 1	date 2025-05-10	rnd 5	type Standard	result 1
		Opponent Joubert, Z (Zani)				Opponent Lin, R (Riley)

#	Games	Start				End
1	3	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 3	type Rapid	result 1	date 2024-03-30	rnd 5	type Rapid	result 1
		Opponent Serrao, L (Luke)				Opponent Pistorius, A (Anja)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament CPH St Andrew's Rapid 2024				Tournament JMC Trinityhouse Little Falls 2024
		date 2024-03-30	rnd 3	type Rapid	result 1	date 2024-06-02	rnd 1	type Standard	result 1
		Opponent Serrao, L (Luke)				Opponent John, K (Kaitlyn Mary)
2	2	Tournament JMC Crawford Sandton 2025				Tournament JMC Crawford Sandton 2025
		date 2025-05-10	rnd 4	type Standard	result 1	date 2025-05-10	rnd 5	type Standard	result 1
		Opponent Joubert, Z (Zani)				Opponent Lin, R (Riley)
3	2	Tournament 2025 Chris Greyling Open Chess Tournament				Tournament 2025 Chris Greyling Open Chess Tournament
		date 2025-03-15	rnd 2	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent Jansen Van Vuurnen, C (Clana)				Opponent Rouxl�, V (Viljoen)

#	Games	Start				End
1	2	Tournament JMC Crawford Sandton 2025				Tournament JMC Crawford Sandton 2025
		date 2025-05-10	rnd 4	type Standard	result 1	date 2025-05-10	rnd 5	type Standard	result 1
		Opponent Joubert, Z (Zani)				Opponent Lin, R (Riley)
2	2	Tournament 2025 Chris Greyling Open Chess Tournament				Tournament 2025 Chris Greyling Open Chess Tournament
		date 2025-03-15	rnd 2	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent Jansen Van Vuurnen, C (Clana)				Opponent Rouxl�, V (Viljoen)
3	2	Tournament JMC Crawford Ruimsig 2025				Tournament JMC Crawford Ruimsig 2025
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-03-01	rnd 3	type Standard	result 1
		Opponent Khaohle, K (Karabo)				Opponent Nkwanyana, O (Owami)

#	Games	Start				End
1	3	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 3	type Rapid	result 1	date 2024-03-30	rnd 5	type Rapid	result 1
		Opponent Serrao, L (Luke)				Opponent Pistorius, A (Anja)

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	Deysel ,Z (Zachariah)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Deysel ,Z (Zachariah)	3	1353.5	928.5	3	1351.9	928.5	0	0	0	0	0	0
2	Sahoo ,S (Shaurya)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
2	Sahoo ,S (Shaurya)	3	1410.4	1127.1	3	1409.7	1127.1	0	0	0	0	0	0
3	Malemane ,A (Atlehang Faith)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Malemane ,A (Atlehang Faith)	3	1252.7	1111	3	1276.5	1111	0	0	0	0	0	0
4	Joubert ,Z (Zani)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
4	Joubert ,Z (Zani)	3	1181	1322.7	3	1176.9	1322.7	0	0	0	0	0	0
5	Newman ,A (Ayen)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Newman ,A (Ayen)	2	1358.2	933.2	2	1301.8	933.2	0	0	0	0	0	0
6	Koorts ,L (Lukas)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Koorts ,L (Lukas)	2	1559.7	1134.7	2	1570.4	1134.7	0	0	0	0	0	0
7	Badat ,M (Mikaeel)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Badat ,M (Mikaeel)	2	1441.1	1016.1	2	1442.8	1016.1	0	0	0	0	0	0
8	Jansen Van Vuuren ,C (Clana)	2	2	425	2	2	425	0	0	0	0	0	0
8	Jansen Van Vuuren ,C (Clana)	2	1135.5	1560.5	2	1151.8	1560.5	0	0	0	0	0	0
9	De Klerk ,L (Line)	1	1	425	1	1	425	0	0	0	0	0	0
9	De Klerk ,L (Line)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Myburgh ,A (Alex)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Myburgh ,A (Alex)	1	1331.4	906.4	1	1335.2	906.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Lochner, C (Calitz)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms