Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Bruin, M (Mario-John)

Chess SA id

1080137712

FIDE id

Date of birth

2008-04-03 (U18)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1118.5	1070.4	1195.4	1200
Raw rating	1103.7	1070.4	1153.1	1200
Weighted rating	1118.5	1070.4	1195.4	1200
Weighted performance	745.9	0	0	0
Floor	700	700	708	700
K-factor	36	36	36	36
Min/Max rating change allowed	190.2	199.4	177.3	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1208 2023-02-01	1200 2018-10-01
Highest raw rating	1200 2020-01-01	1200 2020-01-01	1208 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1208 2025-02-01	1200 2018-10-01
Highest weighted performance	1200 2020-01-01	1200 2020-01-01	1208 2023-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.3	0	-3.8	0
New rating	1117.1	1070.4	1191.5	1200
Analysis
Rating	1118.5	1070.4	1195.4	1200
Raw rating	1103.7	1070.4	1153.1	1200
Weighted rating	1118.5	1070.4	1195.4
Weighted performance	745.9	0	0
K-factor	36	36	36	36
Floor	700	700	708	700
Max/Min rating change allowed	190.2	199.4	177.3	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	1103.7	1070.4	1153.1	1200
New weighted rating	1117.1	1070.4	1191.5	1200
New weighted performance	740	0	0	0
Temp new rating	1117.1	1070.4	1191.5	1200
Temp new rating +/-	-1.3	0	-3.8	0
Final new rating +/-	-1.3	0	-3.8	0
New rating	1117.1	1070.4	1191.5	1200
New K-factor	36	36	36	36
New floor	700	700	708	700

Item	Main	Standard	Rapid
	0	0	0
	4	0	4
	0	0	0
	10	5	5
	12	8	4
	0	0	0
History	26	13	13

Games since
	Main 4	Standard 0		Rapid 4		Blitz 0
Gender	Male
Age group	U18
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	0.5	12.5	-318.8	1202	883.2
Standard	0	0	0	0	0	0
Rapid	4	0.5	12.5	-318.8	1202	883.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	26	6.5	25	-212.5	1236.4	1023.9
Standard	13	2	15.38	-294.2	1228.2	933.9
Rapid	13	4.5	34.62	-130.8	1244.6	1113.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1103.7	1070.4	1153.1	1200
2025-09-30	1103.7	1070.4	1153.1	1200
2025-09-01	1103.7	1070.4	1153.1	1200
2025-08-01	1122.9	1070.4	1208	1200
2025-07-01	1122.9	1070.4	1208	1200
2025-06-01	1122.9	1070.4	1208	1200
2025-05-01	1122.9	1070.4	1208	1200
2025-04-01	1122.9	1070.4	1208	1200
2025-03-01	1122.9	1070.4	1208	1200
2025-02-01	1122.9	1070.4	1208	1200
2025-01-01	1122.9	1070.4	1208	1200
2024-12-01	1122.9	1070.4	1208	1200
2024-11-01	1122.9	1070.4	1208	1200
2024-10-01	1122.9	1070.4	1208	1200
2024-09-01	1122.9	1070.4	1208	1200
2024-08-01	1122.9	1070.4	1208	1200
2024-07-01	1122.9	1070.4	1208	1200
2024-09-01	1122.9	1070.4	1208	1200
2024-05-01	1122.9	1070.4	1208	1200
2024-04-01	1122.9	1070.4	1208	1200
2024-03-01	1122.9	1070.4	1208	1200
2024-02-01	1122.9	1070.4	1208	1200
2024-01-01	1122.9	1070.4	1208	1200
2023-12-01	1122.9	1070.4	1208	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	West Coast College Inter Campus 2025	2025-07-26	2025-07-26	Rapid	West Coast (WCU)	5	4	0.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	West Coast College Inter Campus 2025	2025-07-26	2025-07-26	Rapid	West Coast (WCU)	5	4	0.5	Yes	Analysis
2	Langeberg Schools Chess Trials 2023 (U15 Open)	2023-02-11	2023-02-11	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
3	Cape Winelands Schools Chess - Trials 1 2023 (U15 Boys)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
4	Cape Winelands Schools Top Schools 2022 (U18 Mix)	2022-08-27	2022-08-27	Standard	Cape Winelands (WCW)	5	4	0	Yes	Analysis
5	Cape Winelands Schools 2022 (U15 Boys)	2022-03-05	2022-03-05	Standard	Cape Winelands (WCW)	5	4	0	Yes	Analysis
6	Lanfeberg Schools Chess Trials 2022 (U15)	2022-02-26	2022-02-26	Rapid	Cape Winelands (WCW)	5	4	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament Langeberg Schools Chess Trials 2023				Tournament Langeberg Schools Chess Trials 2023
		date 2023-02-11	rnd 2	type Rapid	result 1	date 2023-02-11	rnd 4	type Rapid	result 1
		Opponent George, K (Kelvin)				Opponent Visser, D (Denwill)
2	2	Tournament Lanfeberg Schools Chess Trials 2022				Tournament Lanfeberg Schools Chess Trials 2022
		date 2022-02-26	rnd 2	type Rapid	result 0.5	date 2022-02-26	rnd 3	type Rapid	result 0.5
		Opponent Mattheys, C (Clyde)				Opponent Bailey, Z (Zainodine)
3	1	Tournament West Coast College Inter Campus 2025				Tournament West Coast College Inter Campus 2025
		date 2025-07-26	rnd 2	type Rapid	result 0.5	date 2025-07-26	rnd 2	type Rapid	result 0.5
		Opponent Oewies, T (Tylon)				Opponent Oewies, T (Tylon)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 5	type Standard	result 1	date 2023-02-25	rnd 5	type Standard	result 1
		Opponent Lottering, R (Rolan)				Opponent Lottering, R (Rolan)
2	1	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 3	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 1
		Opponent Grobler, R (Reinhart)				Opponent Grobler, R (Reinhart)

#	Games	Start				End
1	3	Tournament Langeberg Schools Chess Trials 2023				Tournament Langeberg Schools Chess Trials 2023
		date 2023-02-11	rnd 2	type Rapid	result 1	date 2023-02-11	rnd 4	type Rapid	result 1
		Opponent George, K (Kelvin)				Opponent Visser, D (Denwill)
2	2	Tournament Lanfeberg Schools Chess Trials 2022				Tournament Lanfeberg Schools Chess Trials 2022
		date 2022-02-26	rnd 2	type Rapid	result 0.5	date 2022-02-26	rnd 3	type Rapid	result 0.5
		Opponent Mattheys, C (Clyde)				Opponent Bailey, Z (Zainodine)
3	1	Tournament West Coast College Inter Campus 2025				Tournament West Coast College Inter Campus 2025
		date 2025-07-26	rnd 2	type Rapid	result 0.5	date 2025-07-26	rnd 2	type Rapid	result 0.5
		Opponent Oewies, T (Tylon)				Opponent Oewies, T (Tylon)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Langeberg Schools Chess Trials 2023				Tournament Langeberg Schools Chess Trials 2023
		date 2023-02-11	rnd 2	type Rapid	result 1	date 2023-02-11	rnd 4	type Rapid	result 1
		Opponent George, K (Kelvin)				Opponent Visser, D (Denwill)
2	1	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 5	type Standard	result 1	date 2023-02-25	rnd 5	type Standard	result 1
		Opponent Lottering, R (Rolan)				Opponent Lottering, R (Rolan)
3	1	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 3	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 1
		Opponent Grobler, R (Reinhart)				Opponent Grobler, R (Reinhart)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 5	type Standard	result 1	date 2023-02-25	rnd 5	type Standard	result 1
		Opponent Lottering, R (Rolan)				Opponent Lottering, R (Rolan)
2	1	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-25	rnd 3	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 1
		Opponent Grobler, R (Reinhart)				Opponent Grobler, R (Reinhart)

#	Games	Start				End
1	3	Tournament Langeberg Schools Chess Trials 2023				Tournament Langeberg Schools Chess Trials 2023
		date 2023-02-11	rnd 2	type Rapid	result 1	date 2023-02-11	rnd 4	type Rapid	result 1
		Opponent George, K (Kelvin)				Opponent Visser, D (Denwill)

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	Kana ,Z (Zaywon)	2	0	-425	0	0	0	2	0	-425	0	0	0
1	Kana ,Z (Zaywon)	2	1445.2	1020.2	0	0	0	2	1382.9	1020.2	0	0	0
2	Murtz ,M (Mark)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Murtz ,M (Mark)	1	1209.4	784.4	1	1200	784.4	0	0	0	0	0	0
3	Davids ,J (Jowen)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Davids ,J (Jowen)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Cupido ,A (Aiden)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Cupido ,A (Aiden)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Louw ,B (Ben)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Louw ,B (Ben)	1	1157	732	1	1139.6	732	0	0	0	0	0	0
6	Weimers ,J (Jemal)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Weimers ,J (Jemal)	1	1199	774	1	1200	774	0	0	0	0	0	0
7	White ,D (Dvenerio)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	White ,D (Dvenerio)	1	1249	824	1	1187.2	824	0	0	0	0	0	0
8	Pietersen ,G (Gurwin)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Pietersen ,G (Gurwin)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Steenkamp ,D (Daneshwill)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Steenkamp ,D (Daneshwill)	1	1191.6	766.6	1	1200	766.6	0	0	0	0	0	0
10	Mattheys ,C (Clyde)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
10	Mattheys ,C (Clyde)	1	1200	1200	0	0	0	1	1200	1200	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

De Bruin, M (Mario-John)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms