Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, R (Rian)

Chess SA id

1150300707

FIDE id

Date of birth

2015-08-03 (U12)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1253.9	1207.2	1272.6	1200
Raw rating	1253.9	1207.2	1272.6	1200
Weighted rating	1196.9	1174.5	1221.8	1200
Weighted performance	1169.1	0	0	0
Floor	753.9	709.6	772.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	153.6	164.1	149.5	165.8
Highest rating	1253.9 2025-09-30	1238 2024-03-01	1272.6 2025-08-01	1200 2024-04-01
Highest raw rating	1253.9 2025-09-30	1209.6 2024-05-01	1272.6 2025-08-01	1200 2024-04-01
Highest weighted rating	1209.8 2024-07-01	1209.6 2024-07-01	1205.8 2025-08-01	1200 2024-04-01
Highest weighted performance	1241.9 2024-03-01	1238 2024-03-01	1200 2024-04-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1253.9	1207.2	1272.6	1200
Analysis
Rating	1253.9	1207.2	1272.6	1200
Raw rating	1253.9	1207.2	1272.6	1200
Weighted rating	1196.9	1174.5	1221.8
Weighted performance	1169.1	0	0
K-factor	36	36	36	36
Floor	753.9	709.6	772.6	700
Max/Min rating change allowed	153.6	164.1	149.5	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	1253.9	1207.2	1272.6	1200
New weighted rating	1201.8	1176.9	1226.6	1200
New weighted performance	1161.7	0	0	0
Temp new rating	1253.9	1207.2	1272.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1253.9	1207.2	1272.6	1200
New K-factor	36	36	36	36
New floor	753.9	709.6	772.6	700

Item	Main	Standard	Rapid
	0	0	0
	10	5	5
	15	15	0
	0	0	0
	0	0	0
	0	0	0
History	25	20	5

Games since
	Main 25	Standard 20		Rapid 5		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	10	7.5	75	212.5	1238.4	1450.9
Standard	5	3	60	85	1250.6	1335.6
Rapid	5	4.5	90	340	1226.3	1566.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	25	13	52	17	1233.6	1250.6
Standard	20	8.5	42.5	-63.8	1235.4	1171.6
Rapid	5	4.5	90	340	1226.3	1566.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1253.9	1207.2	1272.6	1200
2025-09-30	1253.9	1207.2	1272.6	1200
2025-09-01	1238.4	1173.3	1272.6	1200
2025-08-01	1238.4	1173.3	1272.6	1200
2025-07-01	1180.1	1173.3	1200	1200
2025-06-01	1180.1	1173.3	1200	1200
2025-05-01	1180.1	1173.3	1200	1200
2025-04-01	1180.1	1173.3	1200	1200
2025-03-01	1180.1	1173.3	1200	1200
2025-02-01	1178.8	1171.7	1200	1200
2025-01-01	1152.7	1138.3	1200	1200
2024-12-01	1152.7	1138.3	1200	1200
2024-11-01	1152.7	1138.3	1200	1200
2024-10-01	1152.7	1138.3	1200	1200
2024-09-01	1152.7	1138.3	1200	1200
2024-08-01	1152.7	1138.3	1200	1200
2024-07-01	1209.8	1209.6	1200	1200
2024-09-01	1209.8	1209.6	1200	1200
2024-05-01	1209.8	1209.6	1200	1200
2024-04-01	1208.3	1209.2	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	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	Parkies Invitational 2025 (U11)	2025-09-23	2025-09-23	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
2	Bojanala's Clash Of Schools -Primary Schools 2025 (U11)	2025-07-26	2025-07-26	Rapid	Bojanala Platina (NBR)	5	5	4.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Parkies Invitational 2025 (U11)	2025-09-23	2025-09-23	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
2	Bojanala's Clash Of Schools -Primary Schools 2025 (U11)	2025-07-26	2025-07-26	Rapid	Bojanala Platina (NBR)	5	5	4.5	Yes	Analysis
3	Bojanala's Clash Of Schools 2024 (U11)	2024-07-20	2024-07-20	Standard	Bojanala Platina (NBR)	5	5	0	Yes	Analysis
4	Bojanala's Rating Express 2024 (Center Pawns)	2024-04-06	2024-04-06	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
5	Bojanala Silwerrand's Rating Implosion 2024 (Center Pawns)	2024-03-16	2024-03-16	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis

#	Games	Start				End
1	7	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Parkies Invitational 2025
		date 2025-07-26	rnd 1	type Rapid	result 0.5	date 2025-09-23	rnd 2	type Standard	result 1
		Opponent Du Preez, B (Bg)				Opponent Venter, J (Jacques)
2	2	Tournament Bojanala's Rating Express 2024				Tournament Bojanala's Rating Express 2024
		date 2024-04-06	rnd 3	type Standard	result 1	date 2024-04-06	rnd 4	type Standard	result 0.5
		Opponent Sprague, C (Chloe)				Opponent De Jager, L (Luado)
3	2	Tournament Bojanala Silwerrand's Rating Implosion 2024				Tournament Bojanala's Rating Express 2024
		date 2024-03-16	rnd 5	type Standard	result 1	date 2024-04-06	rnd 1	type Standard	result 1
		Opponent Botha, E (Erasmus Albertus)				Opponent Jonas, M (Minenhle)

#	Games	Start				End
1	2	Tournament Bojanala's Rating Express 2024				Tournament Bojanala's Rating Express 2024
		date 2024-04-06	rnd 3	type Standard	result 1	date 2024-04-06	rnd 4	type Standard	result 0.5
		Opponent Sprague, C (Chloe)				Opponent De Jager, L (Luado)
2	2	Tournament Bojanala Silwerrand's Rating Implosion 2024				Tournament Bojanala's Rating Express 2024
		date 2024-03-16	rnd 5	type Standard	result 1	date 2024-04-06	rnd 1	type Standard	result 1
		Opponent Botha, E (Erasmus Albertus)				Opponent Jonas, M (Minenhle)
3	2	Tournament Bojanala Silwerrand's Rating Implosion 2024				Tournament Bojanala Silwerrand's Rating Implosion 2024
		date 2024-03-16	rnd 2	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Deysel, E (Eli)				Opponent Sprague, C (Chloe)

#	Games	Start				End
1	5	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 1	type Rapid	result 0.5	date 2025-07-26	rnd 5	type Rapid	result 1
		Opponent Du Preez, B (Bg)				Opponent Van Eeden, R (Righardt)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 2	type Rapid	result 1	date 2025-07-26	rnd 5	type Rapid	result 1
		Opponent Jonas, M (Minenhle)				Opponent Van Eeden, R (Righardt)
2	2	Tournament Bojanala Silwerrand's Rating Implosion 2024				Tournament Bojanala's Rating Express 2024
		date 2024-03-16	rnd 5	type Standard	result 1	date 2024-04-06	rnd 1	type Standard	result 1
		Opponent Botha, E (Erasmus Albertus)				Opponent Jonas, M (Minenhle)
3	2	Tournament Bojanala Silwerrand's Rating Implosion 2024				Tournament Bojanala Silwerrand's Rating Implosion 2024
		date 2024-03-16	rnd 2	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Deysel, E (Eli)				Opponent Sprague, C (Chloe)

#	Games	Start				End
1	2	Tournament Bojanala Silwerrand's Rating Implosion 2024				Tournament Bojanala's Rating Express 2024
		date 2024-03-16	rnd 5	type Standard	result 1	date 2024-04-06	rnd 1	type Standard	result 1
		Opponent Botha, E (Erasmus Albertus)				Opponent Jonas, M (Minenhle)
2	2	Tournament Bojanala Silwerrand's Rating Implosion 2024				Tournament Bojanala Silwerrand's Rating Implosion 2024
		date 2024-03-16	rnd 2	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Deysel, E (Eli)				Opponent Sprague, C (Chloe)
3	1	Tournament Bojanala's Rating Express 2024				Tournament Bojanala's Rating Express 2024
		date 2024-04-06	rnd 3	type Standard	result 1	date 2024-04-06	rnd 3	type Standard	result 1
		Opponent Sprague, C (Chloe)				Opponent Sprague, C (Chloe)

#	Games	Start				End
1	4	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 2	type Rapid	result 1	date 2025-07-26	rnd 5	type Rapid	result 1
		Opponent Jonas, M (Minenhle)				Opponent Van Eeden, R (Righardt)

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	Sprague ,C (Chloe)	2	2	425	2	2	425	0	0	0	0	0	0
1	Sprague ,C (Chloe)	2	1161.6	1586.6	2	1156.9	1586.6	0	0	0	0	0	0
2	Rakubutu ,P (Pabatso)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Rakubutu ,P (Pabatso)	2	1347.3	922.3	2	1349.6	922.3	0	0	0	0	0	0
3	De Jager ,L (Luado)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	De Jager ,L (Luado)	2	1343.2	1130.7	2	1324.2	1130.7	0	0	0	0	0	0
4	Jonas ,M (Minenhle)	2	2	425	1	1	425	1	1	425	0	0	0
4	Jonas ,M (Minenhle)	2	1136.6	1561.6	1	1066.8	1561.6	1	1115.8	1561.6	0	0	0
5	Van Der Wath ,S (Serin)	1	1	425	1	1	425	0	0	0	0	0	0
5	Van Der Wath ,S (Serin)	1	1212.8	1637.8	1	1200	1637.8	0	0	0	0	0	0
6	Locherenberg ,J (Jason)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Locherenberg ,J (Jason)	1	1319.2	894.2	1	1298.5	894.2	0	0	0	0	0	0
7	Venter ,J (Jacques)	1	1	425	1	1	425	0	0	0	0	0	0
7	Venter ,J (Jacques)	1	1205.6	1630.6	1	1200	1630.6	0	0	0	0	0	0
8	Terblanche ,B (Bernard)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Terblanche ,B (Bernard)	1	1250.5	825.5	1	1242.5	825.5	0	0	0	0	0	0
9	Botha ,E (Erasmus Albertus)	1	1	425	1	1	425	0	0	0	0	0	0
9	Botha ,E (Erasmus Albertus)	1	1188.2	1613.2	1	1181.8	1613.2	0	0	0	0	0	0
10	Deysel ,E (Eli)	1	1	425	1	1	425	0	0	0	0	0	0
10	Deysel ,E (Eli)	1	789.2	1214.2	1	787.6	1214.2	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

Van Der Merwe, R (Rian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms