Chess South Africa Ratings Database

PLAYER PAGE

Personal

Kotzenmacher, L (Leo)

Chess SA id

1130301077

FIDE id

Date of birth

2013-06-13 (U14)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

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	1392.2	1387.1	1200	1200
Raw rating	1392.2	1387.1	1200	1200
Weighted rating	1293.2	1286.3	1200	1200
Weighted performance	1312.4	1310.5	0	0
Floor	930.7	928.7	700	700
K-factor	32	32	36	36
Min/Max rating change allowed	126.1	127	165.8	165.8
Highest rating	1430.7 2025-11-30	1428.7 2025-11-30	1200 2024-04-01	1200 2024-04-01
Highest raw rating	1430.7 2025-11-30	1428.7 2025-11-30	1200 2024-04-01	1200 2024-04-01
Highest weighted rating	1420.1 2024-11-01	1415.4 2024-11-01	1200 2024-04-01	1200 2024-04-01
Highest weighted performance	1420.1 2025-07-01	1415.4 2024-12-01	1200 2024-04-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1392.2	1387.1	1200	1200
Analysis
Rating	1392.2	1387.1	1200	1200
Raw rating	1392.2	1387.1	1200	1200
Weighted rating	1293.2	1286.3	1200
Weighted performance	1312.4	1310.5	0
K-factor	32	32	36	36
Floor	930.7	928.7	700	700
Max/Min rating change allowed	126.1	127	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	1392.2	1387.1	1200	1200
New weighted rating	1306.2	1299.7	1200	1200
New weighted performance	1303.6	1301.7	0	0
Temp new rating	1392.2	1387.1	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1392.2	1387.1	1200	1200
New K-factor	32	32	36	36
New floor	930.7	928.7	700	700

Item	Main	Standard
	0	0
	64	64
	34	34
	0	0
	0	0
	0	0
History	98	98

Games since
	Main 98	Standard 98		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	1878		653		220
Male	1555		529		183
U14	290		97		27
U14 Male	218		69		19
Standard
	RSA		Province		Region
Overall	1791		669		217
Male	1478		544		178
U14	274		94		28
U14 Male	202		67		19
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	64	38.5	60.16	86.3	1278.2	1364.5
Standard	64	38.5	60.16	86.3	1278.2	1364.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	98	46.5	47.45	-21.7	1262.7	1241
Standard	98	46.5	47.45	-21.7	1262.7	1241
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1392.2	1387.1	1200	1200
2025-11-30	1430.7	1428.7	1200	1200
2025-11-01	1423.3	1418.5	1200	1200
2025-09-30	1423.3	1418.5	1200	1200
2025-09-01	1428.6	1424.5	1200	1200
2025-08-01	1420.1	1415.4	1200	1200
2025-07-01	1420.1	1415.4	1200	1200
2025-06-01	1310.6	1305.3	1200	1200
2025-05-01	1289.1	1285	1200	1200
2025-04-01	1289.1	1285	1200	1200
2025-03-01	1309.4	1309.2	1200	1200
2025-02-01	1116.2	1105.6	1200	1200
2025-01-01	1062.7	1055.2	1200	1200
2024-12-01	1062.7	1055.2	1200	1200
2024-11-01	1062.7	1055.2	1200	1200
2024-10-01	1062.7	1055.2	1200	1200
2024-09-01	1059	1047.6	1200	1200
2024-11-01	1047.6	1019.6	1200	1200
2024-07-01	1080.8	1054.4	1200	1200
2024-06-01	1145.9	1120.8	1200	1200
2024-05-01	1145.9	1120.8	1200	1200
2024-04-01	1135.9	1105.6	1200	1200
2024-03-01	1200	1200	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 (U14 Candidates)	2025-12-06	2025-12-07	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
2	JCC St Davids Marist Schools League 2025 (A)	2025-09-08	2025-10-27	Standard	Johannesburg Metro (GJM)	6	5	4	Yes	Analysis
3	Fourth Knight Riders Juniors Open Chess Tournament 2025 (B)	2025-08-31	2025-08-31	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
4	JMC Closed 2025 (U14)	2025-08-09	2025-08-10	Standard	Johannesburg Metro (GJM)	5	3	2	Yes	Analysis
5	Third Knight Riders Junior Open 2025 (B+C)	2025-06-22	2025-06-22	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
6	JCC Steyn City High Schools League 2025 (A)	2025-05-07	2025-06-09	Standard	Johannesburg Metro (GJM)	6	1	1	Yes	Analysis
7	Knight Riders Juniors Open Chess Tournament 2025 (C)	2025-05-25	2025-05-25	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
8	Moja Chess Extravaganza 2025 (U14)	2025-04-26	2025-04-28	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
9	JMC Crawford Sandton 2025 (C)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
10	2nd Knight Riders Junior Open 2025 (C)	2025-03-23	2025-03-23	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
11	JCC - Dainfern Chess League 2025 (A)	2025-02-03	2025-03-17	Standard	Johannesburg Metro (GJM)	6	5	2	Yes	Analysis
12	JMC Crawford Ruimsig 2025 (D)	2025-03-01	2025-03-01	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
13	Knight Riders Open Chess Tournament 2025 (C)	2025-02-22	2025-02-22	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
14	First Knights Juniors Chess Tournament 2025 (D)	2025-02-09	2025-02-09	Standard	Johannesburg Metro (GJM)	5	5	4.5	Yes	Analysis
15	JMC Kick Off 2025 (D)	2025-02-02	2025-02-02	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
16	Knight Riders Spring Chess Tournament 2024 (D)	2024-09-28	2024-09-28	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
17	JMC Closed 2024 (D)	2024-08-09	2024-08-11	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis
18	Fourth Knight Riders Juniors Open Chess Tournament 204 (D)	2024-08-03	2024-08-03	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
19	Chess Power House July Open 2024 (C)	2024-07-20	2024-07-20	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis
20	Second Knight Riders Juniors Open Chess Tournament 2024 (C)	2024-06-08	2024-06-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
21	JCC Steyn City High Schools League 2024 (A)	2024-05-11	2024-05-25	Standard	Johannesburg Metro (GJM)	6	2	0	Yes	Analysis
22	JCC Steyn City High Schools League 2024 (B)	2024-05-11	2024-05-25	Standard	Johannesburg Metro (GJM)	6	3	0.5	Yes	Analysis
23	Dainfern College Chess League 2024 (B)	2024-01-29	2024-03-11	Standard	Johannesburg Metro (GJM)	6	2	1	Yes	Analysis
24	1st Knights Open Tournament 2024 (D)	2024-03-23	2024-03-23	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis

#	Games	Start				End
1	7	Tournament JMC Kick Off 2025				Tournament First Knights Juniors Chess Tournament 2025
		date 2025-02-02	rnd 5	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent Gadney, L (Liam)				Opponent Botha, R (Ruan)
2	5	Tournament JMC Crawford Sandton 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-05-25	rnd 1	type Standard	result 1
		Opponent Ferreira, D (Daniela)				Opponent Lala, K (Kiyaan)
3	3	Tournament Third Knight Riders Junior Open 2025				Tournament JMC Closed 2025
		date 2025-06-22	rnd 4	type Standard	result 0.5	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent Finnemore, E (Ewan)				Opponent Steyl, J (Juan)

#	Games	Start				End
1	7	Tournament JMC Kick Off 2025				Tournament First Knights Juniors Chess Tournament 2025
		date 2025-02-02	rnd 5	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent Gadney, L (Liam)				Opponent Botha, R (Ruan)
2	5	Tournament JMC Crawford Sandton 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-05-25	rnd 1	type Standard	result 1
		Opponent Ferreira, D (Daniela)				Opponent Lala, K (Kiyaan)
3	3	Tournament Third Knight Riders Junior Open 2025				Tournament JMC Closed 2025
		date 2025-06-22	rnd 4	type Standard	result 0.5	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent Finnemore, E (Ewan)				Opponent Steyl, J (Juan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament JMC Crawford Sandton 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-05-25	rnd 1	type Standard	result 1
		Opponent Ferreira, D (Daniela)				Opponent Lala, K (Kiyaan)
2	3	Tournament First Knights Juniors Chess Tournament 2025				Tournament First Knights Juniors Chess Tournament 2025
		date 2025-02-09	rnd 3	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent Kutumela, B (Bokang)				Opponent Botha, R (Ruan)
3	3	Tournament JMC Kick Off 2025				Tournament First Knights Juniors Chess Tournament 2025
		date 2025-02-02	rnd 5	type Standard	result 1	date 2025-02-09	rnd 1	type Standard	result 1
		Opponent Gadney, L (Liam)				Opponent Manalavan, J (Jacob)

#	Games	Start				End
1	5	Tournament JMC Crawford Sandton 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-05-25	rnd 1	type Standard	result 1
		Opponent Ferreira, D (Daniela)				Opponent Lala, K (Kiyaan)
2	3	Tournament First Knights Juniors Chess Tournament 2025				Tournament First Knights Juniors Chess Tournament 2025
		date 2025-02-09	rnd 3	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent Kutumela, B (Bokang)				Opponent Botha, R (Ruan)
3	3	Tournament JMC Kick Off 2025				Tournament First Knights Juniors Chess Tournament 2025
		date 2025-02-02	rnd 5	type Standard	result 1	date 2025-02-09	rnd 1	type Standard	result 1
		Opponent Gadney, L (Liam)				Opponent Manalavan, J (Jacob)

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	Chauke ,N (Nokukhanya)	4	4	425	4	4	425	0	0	0	0	0	0
1	Chauke ,N (Nokukhanya)	4	1050.7	1475.7	4	1041.6	1475.7	0	0	0	0	0	0
2	Maduna ,A (Asanda)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Maduna ,A (Asanda)	3	1147.6	1289.3	3	1133.9	1289.3	0	0	0	0	0	0
3	Julius ,J (Joshua)	2	2	425	2	2	425	0	0	0	0	0	0
3	Julius ,J (Joshua)	2	1199.8	1624.8	2	1199.8	1624.8	0	0	0	0	0	0
4	Steyn ,K (Kian)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Steyn ,K (Kian)	2	1608.2	1183.2	2	1593	1183.2	0	0	0	0	0	0
5	Pembere ,M (Makanakaishe)	2	2	425	2	2	425	0	0	0	0	0	0
5	Pembere ,M (Makanakaishe)	2	1199.8	1624.8	2	1199.8	1624.8	0	0	0	0	0	0
6	Mkulisi ,B (Baphiwe)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Mkulisi ,B (Baphiwe)	2	1153.8	728.8	2	1144.2	728.8	0	0	0	0	0	0
7	Forshaw ,C (Chloe)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
7	Forshaw ,C (Chloe)	2	1184.5	1397	2	1181.4	1397	0	0	0	0	0	0
8	Mahale ,A (Agastya)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Mahale ,A (Agastya)	2	1220.2	795.2	2	1217.6	795.2	0	0	0	0	0	0
9	Mankena ,S (Satvik Ram)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Mankena ,S (Satvik Ram)	2	1609.8	1184.8	2	1598.5	1184.8	0	0	0	0	0	0
10	Tshabalala ,K (Kagiso)	1	1	425	1	1	425	0	0	0	0	0	0
10	Tshabalala ,K (Kagiso)	1	1200	1625	1	1200	1625	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

Kotzenmacher, L (Leo)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms