Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Bruyn, L (Lian)

Chess SA id

1140147130

FIDE id

Date of birth

2014-01-20 (U12)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1316.5	1315.1	1179.4	1200
Raw rating	1308	1315.1	1179.4	1200
Weighted rating	1316.5	1313.7	1176.2	1200
Weighted performance	1010.7	1003.4	0	0
Floor	834.7	832.3	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	142.2	140.7	170.8	165.8
Highest rating	1342.2 2023-08-01	1342.4 2023-08-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1334.7 2024-02-01	1332.3 2024-02-01	1200 2019-12-01	1200 2024-02-01
Highest weighted rating	1334.7 2025-06-01	1332.3 2025-06-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1342.2 2023-08-01	1342.4 2023-08-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1	0	0	0
New rating	1315.5	1315.1	1179.4	1200
Analysis
Rating	1316.5	1315.1	1179.4	1200
Raw rating	1308	1315.1	1179.4	1200
Weighted rating	1316.5	1313.7	1176.2
Weighted performance	1010.7	1003.4	0
K-factor	36	36	36	36
Floor	834.7	832.3	700	700
Max/Min rating change allowed	142.2	140.7	170.8	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	1308	1315.1	1179.4	1200
New weighted rating	1315.5	1313.6	1176.4	1200
New weighted performance	1003.1	995.8	0	0
Temp new rating	1315.5	1315.1	1179.4	1200
Temp new rating +/-	-1	0	0	0
Final new rating +/-	-1	0	0	0
New rating	1315.5	1315.1	1179.4	1200
New K-factor	36	36	36	36
New floor	834.7	832.3	700	700

Item	Main	Standard	Rapid
	0	0	0
	4	0	4
	10	10	0
	29	29	0
	3	0	3
	0	0	0
History	46	39	7

Games since
	Main 14	Standard 10		Rapid 4		Blitz 0
Gender	Male
Age group	U12
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	4	2	50	0	1200	1200
Standard	0	0	0	0	0	0
Rapid	4	2	50	0	1200	1200
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	46	26.5	57.61	64.7	1218	1282.7
Standard	39	23.5	60.26	87.2	1220.1	1307.3
Rapid	7	3	42.86	-60.7	1206.7	1146
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1308	1315.1	1179.4	1200
2025-09-30	1308	1315.1	1179.4	1200
2025-09-01	1308	1315.1	1179.4	1200
2025-08-01	1320.2	1315.1	1175.2	1200
2025-07-01	1320.2	1315.1	1175.2	1200
2025-06-01	1320.2	1315.1	1175.2	1200
2025-05-01	1319.9	1315	1175.2	1200
2025-04-01	1319.4	1314.7	1175.2	1200
2025-03-01	1318.5	1314	1175.2	1200
2025-02-01	1316.3	1311.7	1175.2	1200
2025-01-01	1301.2	1289.8	1175.2	1200
2024-12-01	1301.2	1289.8	1175.2	1200
2024-11-01	1301.2	1289.8	1175.2	1200
2024-10-01	1301.2	1289.8	1175.2	1200
2024-09-01	1334.7	1332.3	1175.2	1200
2024-08-01	1334.7	1332.3	1175.2	1200
2024-07-01	1334.7	1332.3	1175.2	1200
2024-09-01	1334.7	1332.3	1175.2	1200
2024-05-01	1334.7	1332.3	1175.2	1200
2024-04-01	1334.7	1332.3	1175.2	1200
2024-03-01	1334.7	1332.3	1175.2	1200
2024-02-01	1334.7	1332.3	1175.2	1200
2024-01-01	1327.9	1328	1175.2	1200
2023-12-01	1327.9	1328	1175.2	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	Edenvale Germiston Cluster Teams 2025 (U11)	2025-07-25	2025-07-25	Rapid	Ekurhuleni (GE)	6	4	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Edenvale Germiston Cluster Teams 2025 (U11)	2025-07-25	2025-07-25	Rapid	Ekurhuleni (GE)	6	4	2	Yes	Analysis
2	Ekurhuleni North Schools Finals - Teams 2024 (U11 Open)	2024-08-03	2024-08-03	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
3	2024 Gauteng Inter-Region Chess Championship (U10A)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2023 Gauteng Top Schools (U9 Mixed)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	5	4	Yes	Analysis
5	2023 Ekurhuleni North District Schools Finals (U9)	2023-07-29	2023-07-29	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
6	Ekurhuleni Chess Trial 3 2023 (U10)	2023-06-17	2023-06-17	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
7	Ekurhuleni North Schools Individual Finals 2023 (U9 Boys)	2023-05-12	2023-05-12	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
8	Ekhuruleni Chess Trials 1 2023 (U8+U10)	2023-03-25	2023-03-25	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis
9	Ekurhuleni Springs Open 4 March 2023 (E)	2023-03-04	2023-03-04	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
10	Super 8 Skaak 2022 (Juniors)	2022-10-15	2022-10-15	Rapid	Bojanala Platina (NBR)	3	3	1	Yes	Analysis

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Trial 3 2023				Tournament 2023 Ekurhuleni North District Schools Finals
		date 2023-06-17	rnd 4	type Standard	result 1	date 2023-07-29	rnd 3	type Standard	result 1
		Opponent Mosala, A (Atlehang)				Opponent Davis, J (Joshua)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-08-18	rnd 5	type Standard	result 1	date 2024-01-13	rnd 3	type Standard	result 1
		Opponent Moustafis, A (Andoni)				Opponent Laubscher, D (Declan)
3	4	Tournament Ekurhuleni Springs Open 4 March 2023				Tournament Ekurhuleni Springs Open 4 March 2023
		date 2023-03-04	rnd 1	type Standard	result 1	date 2023-03-04	rnd 4	type Standard	result 1
		Opponent Noack, A (Angelica)				Opponent Wong, K (Kayla)

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Trial 3 2023				Tournament 2023 Ekurhuleni North District Schools Finals
		date 2023-06-17	rnd 4	type Standard	result 1	date 2023-07-29	rnd 3	type Standard	result 1
		Opponent Mosala, A (Atlehang)				Opponent Davis, J (Joshua)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-08-18	rnd 5	type Standard	result 1	date 2024-01-13	rnd 3	type Standard	result 1
		Opponent Moustafis, A (Andoni)				Opponent Laubscher, D (Declan)
3	4	Tournament Ekurhuleni Springs Open 4 March 2023				Tournament Ekurhuleni Springs Open 4 March 2023
		date 2023-03-04	rnd 1	type Standard	result 1	date 2023-03-04	rnd 4	type Standard	result 1
		Opponent Noack, A (Angelica)				Opponent Wong, K (Kayla)

#	Games	Start				End
1	2	Tournament Edenvale Germiston Cluster Teams 2025				Tournament Edenvale Germiston Cluster Teams 2025
		date 2025-07-25	rnd 2	type Rapid	result 1	date 2025-07-25	rnd 3	type Rapid	result 1
		Opponent Gultig, C (Cayden)				Opponent Maepa, M (Mahlatse)
2	2	Tournament Super 8 Skaak 2022				Tournament Super 8 Skaak 2022
		date 2022-10-15	rnd 1	type Rapid	result 0.5	date 2022-10-15	rnd 2	type Rapid	result 0.5
		Opponent Dirker, L (Lilly-Ann)				Opponent Pelser, M (Milan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Trial 3 2023				Tournament 2023 Ekurhuleni North District Schools Finals
		date 2023-06-17	rnd 4	type Standard	result 1	date 2023-07-29	rnd 3	type Standard	result 1
		Opponent Mosala, A (Atlehang)				Opponent Davis, J (Joshua)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-08-18	rnd 5	type Standard	result 1	date 2024-01-13	rnd 3	type Standard	result 1
		Opponent Moustafis, A (Andoni)				Opponent Laubscher, D (Declan)
3	4	Tournament Ekurhuleni Springs Open 4 March 2023				Tournament Ekurhuleni Springs Open 4 March 2023
		date 2023-03-04	rnd 1	type Standard	result 1	date 2023-03-04	rnd 4	type Standard	result 1
		Opponent Noack, A (Angelica)				Opponent Wong, K (Kayla)

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Trial 3 2023				Tournament 2023 Ekurhuleni North District Schools Finals
		date 2023-06-17	rnd 4	type Standard	result 1	date 2023-07-29	rnd 3	type Standard	result 1
		Opponent Mosala, A (Atlehang)				Opponent Davis, J (Joshua)
2	4	Tournament 2023 Gauteng Top Schools				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-08-18	rnd 5	type Standard	result 1	date 2024-01-13	rnd 3	type Standard	result 1
		Opponent Moustafis, A (Andoni)				Opponent Laubscher, D (Declan)
3	4	Tournament Ekurhuleni Springs Open 4 March 2023				Tournament Ekurhuleni Springs Open 4 March 2023
		date 2023-03-04	rnd 1	type Standard	result 1	date 2023-03-04	rnd 4	type Standard	result 1
		Opponent Noack, A (Angelica)				Opponent Wong, K (Kayla)

#	Games	Start				End
1	2	Tournament Edenvale Germiston Cluster Teams 2025				Tournament Edenvale Germiston Cluster Teams 2025
		date 2025-07-25	rnd 2	type Rapid	result 1	date 2025-07-25	rnd 3	type Rapid	result 1
		Opponent Gultig, C (Cayden)				Opponent Maepa, M (Mahlatse)

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	Moustafis ,A (Andoni)	2	2	425	2	2	425	0	0	0	0	0	0
1	Moustafis ,A (Andoni)	2	1222.7	1647.7	2	1227.6	1647.7	0	0	0	0	0	0
2	Van Der Schyff ,M (Mila-Ne)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Van Der Schyff ,M (Mila-Ne)	2	1190.7	765.7	2	1143.1	765.7	0	0	0	0	0	0
3	Verwey ,R (Reuben)	2	2	425	2	2	425	0	0	0	0	0	0
3	Verwey ,R (Reuben)	2	1222.2	1647.2	2	1226.6	1647.2	0	0	0	0	0	0
4	Gultig ,C (Cayden)	2	1	0	0	0	0	2	1	0	0	0	0
4	Gultig ,C (Cayden)	2	1200	1200	0	0	0	2	1200	1200	0	0	0
5	Maepa ,M (Mahlatse)	2	1	0	0	0	0	2	1	0	0	0	0
5	Maepa ,M (Mahlatse)	2	1200	1200	0	0	0	2	1200	1200	0	0	0
6	Mokoka ,L (Lesego)	1	1	425	1	1	425	0	0	0	0	0	0
6	Mokoka ,L (Lesego)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Ngubane ,M (Melokuhle)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Ngubane ,M (Melokuhle)	1	1209	784	1	1211.2	784	0	0	0	0	0	0
8	Miya ,B (Banele)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Miya ,B (Banele)	1	1174.8	749.8	1	1168.4	749.8	0	0	0	0	0	0
9	Botha ,D (Dillen)	1	1	425	1	1	425	0	0	0	0	0	0
9	Botha ,D (Dillen)	1	1215.5	1640.5	1	1218.7	1640.5	0	0	0	0	0	0
10	Bienedell ,R (Robin)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Bienedell ,R (Robin)	1	1443.9	1018.9	1	1438.2	1018.9	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

De Bruyn, L (Lian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms