Chess South Africa Ratings Database

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Personal

Plaatjies, A (Ayren)

Chess SA id

1150193203

FIDE id

Date of birth

2015-09-22 (U12)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-11-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1314.8	1388.2	1179.6	1189.4
Raw rating	1283.3	1388.2	1098.9	1153.9
Weighted rating	1314.8	1355.5	1179.6	1189.4
Weighted performance	1052.9	1334.8	1025.9	0
Floor	857.2	888.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	147.3	126.8	191.5	177.1
Highest rating	1411.3 2024-04-01	1417.8 2024-04-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1357.2 2025-09-01	1388.2 2025-09-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1327.6 2024-10-01	1362.7 2024-10-01	1200 2024-02-01	1200 2024-02-01
Highest weighted performance	1411.3 2024-04-01	1417.8 2024-04-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.9	0	-7.2	-3.2
New rating	1312.9	1388.2	1172.4	1186.2
Analysis
Rating	1314.8	1388.2	1179.6	1189.4
Raw rating	1283.3	1388.2	1098.9	1153.9
Weighted rating	1314.8	1355.5	1179.6
Weighted performance	1052.9	1334.8	1025.9
K-factor	36	36	36	36
Floor	857.2	888.2	700	700
Max/Min rating change allowed	147.3	126.8	191.5	177.1
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	1283.3	1388.2	1098.9	1153.9
New weighted rating	1312.9	1359.7	1172.4	1186.2
New weighted performance	1045.9	1325.5	1019.1	0
Temp new rating	1312.9	1388.2	1172.4	1186.2
Temp new rating +/-	-1.9	0	-7.2	-3.2
Final new rating +/-	-1.9	0	-7.2	-3.2
New rating	1312.9	1388.2	1172.4	1186.2
New K-factor	36	36	36	36
New floor	857.2	888.2	700	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	83	36	38	9
	25	25	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	108	61	38	9

Games since
	Main 108	Standard 61		Rapid 38		Blitz 9
Gender	Male
Age group	U12
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3116		1024		288
Male	2444		765		210
U12	466		161		48
U12 Male	332		107		30
Standard
	RSA		Province		Region
Overall	2221		610		174
Male	1802		471		130
U12	291		82		31
U12 Male	213		58		21
Rapid
	RSA		Province		Region
Overall	1758		865		63
Male	1320		648		48
U12	341		186		16
U12 Male	235		125		11
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	83	32	38.55	-97.3	1361.9	1264.6
Standard	36	21	58.33	70.8	1306.2	1377
Rapid	38	9	23.68	-223.7	1402.4	1178.7
Blitz	9	2	22.22	-236.1	1413.3	1177.2
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	108	47.5	43.98	-51.2	1347.1	1295.9
Standard	61	36.5	59.84	83.6	1302.8	1386.4
Rapid	38	9	23.68	-223.7	1402.4	1178.7
Blitz	9	2	22.22	-236.1	1413.3	1177.2

Date	Main	Standard	Rapid	Blitz
2026-01-01	1283.3	1388.2	1098.9	1153.9
2025-11-30	1283.3	1388.2	1098.9	1153.9
2025-11-01	1312.7	1388.2	1152.2	1153.9
2025-09-30	1357.2	1388.2	1196.8	1200
2025-09-01	1357.2	1388.2	1196.8	1200
2025-08-01	1305.2	1339.6	1196.8	1200
2025-07-01	1309.2	1339.6	1199.4	1200
2025-06-01	1309.2	1339.6	1199.4	1200
2025-05-01	1300.2	1339.6	1199.2	1200
2025-04-01	1310.3	1362.7	1196.7	1200
2025-03-01	1307.7	1330.6	1196.6	1200
2025-02-01	1327.6	1337	1200	1200
2025-01-01	1327.6	1337	1200	1200
2024-12-01	1327.6	1337	1200	1200
2024-11-01	1327.6	1337	1200	1200
2024-10-01	1327.6	1337	1200	1200
2024-09-01	1327.6	1337	1200	1200
2024-11-01	1327.6	1337	1200	1200
2024-07-01	1327.6	1337	1200	1200
2024-06-01	1327.6	1337	1200	1200
2024-05-01	1316.5	1337.7	1200	1200
2024-04-01	1257.6	1272.2	1200	1200
2024-03-01	1222.6	1226.8	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	Uben Roode Foundation Open 4 2025	2025-11-08	2025-11-08	Rapid	Eden (WEG)	5	4	0	Yes	Analysis
2	Uben Roode Foundation 2025 (Rapid)	2025-11-01	2025-11-01	Rapid	Eden (WEG)	6	5	2	Yes	Analysis
3	Uben Roode Foundation Open 2025 (2)	2025-10-25	2025-10-25	Rapid	Eden (WEG)	6	6	2	Yes	Analysis
4	2025 Mossel Bay Open (Rapid A)	2025-10-04	2025-10-04	Rapid	Eden (WEG)	7	7	1	Yes	Analysis
5	2025 Mossel Bay Open (Blitz)	2025-10-03	2025-10-03	Blitz	Eden (WEG)	9	9	2	Yes	Analysis
6	Eden Top Schools 2025 (U13)	2025-08-16	2025-08-16	Standard	Eden (WEG)	5	5	4	Yes	Analysis
7	2025 Eden Open & Women's Tournament (U10)	2025-08-23	2025-08-23	Standard	Eden (WEG)	5	5	2	Yes	Analysis
8	Knysna Oyster Festival Rapid 2025 (Scholars)	2025-07-12	2025-07-12	Rapid	Eden (WEG)	6	5	1	Yes	Analysis
9	Western Cape Schools Individual Championship 2025 (U11 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
10	Eden Chess Trials 2 2025 (U12)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	5	2.5	Yes	Analysis
11	Oudtshoorn Rapid 2025 (Open)	2025-03-28	2025-03-28	Rapid	Eden (WEG)	6	6	2	Yes	Analysis
12	Eden Schools Chess Trials 1 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	4	Yes	Analysis
13	Oudussa Trials 2025 (U11 Boys)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
14	Loerie Skaaktoernooi 2025	2025-02-22	2025-02-22	Rapid	Eden (WEG)	5	5	1	Yes	Analysis
15	Oudussa Trials 2 2025 (U11 Boys)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	5	3	Yes	Analysis
16	Western Cape PS Individuals Championship 2024 (U9 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
17	Eden Chess Trials 2 2024 (U10)	2024-04-13	2024-04-20	Standard	Eden (WEG)	10	10	6.5	Yes	Analysis
18	Eden School Chess Trials 1 2024 (U9 Boys)	2024-03-09	2024-03-09	Standard	Eden (WEG)	5	5	3	Yes	Analysis
19	OUDUSSA Trials 2 2024 (U7+U9 Boys+Girls)	2024-02-17	2024-02-17	Standard	Eden (WEG)	5	4	3	Yes	Analysis

#	Games	Start				End
1	5	Tournament OUDUSSA Trials 2 2024				Tournament Eden School Chess Trials 1 2024
		date 2024-02-17	rnd 3	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Groenewald, J (Janu)				Opponent Van Den Berg, T (Teagan)
2	4	Tournament Eden Schools Chess Trials 1 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-08	rnd 5	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent Frans, L (Lyle)				Opponent Muza, B (Benjamin)
3	4	Tournament Eden Chess Trials 2 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-04-20	rnd 9	type Standard	result 1	date 2024-05-04	rnd 2	type Standard	result 1
		Opponent Rabie, M (Mizelle)				Opponent Fritz, U (Ulysse)

#	Games	Start				End
1	6	Tournament Western Cape Schools Individual Championship 2025				Tournament Eden Top Schools 2025
		date 2025-05-17	rnd 4	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Titus, M (Michael John)				Opponent Hartzenberg, J (Joshua)
2	5	Tournament OUDUSSA Trials 2 2024				Tournament Eden School Chess Trials 1 2024
		date 2024-02-17	rnd 3	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Groenewald, J (Janu)				Opponent Van Den Berg, T (Teagan)
3	4	Tournament Eden Schools Chess Trials 1 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-08	rnd 5	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent Frans, L (Lyle)				Opponent Muza, B (Benjamin)

#	Games	Start				End
1	1	Tournament Knysna Oyster Festival Rapid 2025				Tournament Knysna Oyster Festival Rapid 2025
		date 2025-07-12	rnd 2	type Rapid	result 1	date 2025-07-12	rnd 2	type Rapid	result 1
		Opponent Van Der Merwe, F (Finley)				Opponent Van Der Merwe, F (Finley)
2	1	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 5	type Rapid	result 1	date 2025-03-28	rnd 5	type Rapid	result 1
		Opponent Matheus, A (Avril)				Opponent Matheus, A (Avril)
3	1	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 3	type Rapid	result 1
		Opponent Gelderblom, J (Jayden)				Opponent Gelderblom, J (Jayden)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament OUDUSSA Trials 2 2024				Tournament Eden School Chess Trials 1 2024
		date 2024-02-17	rnd 3	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Groenewald, J (Janu)				Opponent Van Den Berg, T (Teagan)
2	4	Tournament Eden Chess Trials 2 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-04-20	rnd 9	type Standard	result 1	date 2024-05-04	rnd 2	type Standard	result 1
		Opponent Rabie, M (Mizelle)				Opponent Fritz, U (Ulysse)
3	3	Tournament Eden Top Schools 2025				Tournament Eden Top Schools 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Pietersen, L (Linsey)				Opponent Hartzenberg, J (Joshua)

#	Games	Start				End
1	6	Tournament Western Cape Schools Individual Championship 2025				Tournament Eden Top Schools 2025
		date 2025-05-17	rnd 4	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Titus, M (Michael John)				Opponent Hartzenberg, J (Joshua)
2	5	Tournament OUDUSSA Trials 2 2024				Tournament Eden School Chess Trials 1 2024
		date 2024-02-17	rnd 3	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Groenewald, J (Janu)				Opponent Van Den Berg, T (Teagan)
3	4	Tournament Eden Chess Trials 2 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-04-20	rnd 9	type Standard	result 1	date 2024-05-04	rnd 2	type Standard	result 1
		Opponent Rabie, M (Mizelle)				Opponent Fritz, U (Ulysse)

#	Games	Start				End
1	1	Tournament Knysna Oyster Festival Rapid 2025				Tournament Knysna Oyster Festival Rapid 2025
		date 2025-07-12	rnd 2	type Rapid	result 1	date 2025-07-12	rnd 2	type Rapid	result 1
		Opponent Van Der Merwe, F (Finley)				Opponent Van Der Merwe, F (Finley)
2	1	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 5	type Rapid	result 1	date 2025-03-28	rnd 5	type Rapid	result 1
		Opponent Matheus, A (Avril)				Opponent Matheus, A (Avril)
3	1	Tournament Oudtshoorn Rapid 2025				Tournament Oudtshoorn Rapid 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 3	type Rapid	result 1
		Opponent Gelderblom, J (Jayden)				Opponent Gelderblom, J (Jayden)

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	Plaatjies ,R (Rumark)	6	2	-141.7	0	0	0	5	2	-85	1	0	-425
1	Plaatjies ,R (Rumark)	6	1227.4	1085.8	0	0	0	5	1202.5	1142.4	1	1200	802.4
2	Rabie ,M (Mizelle)	4	1	-212.5	3	1	-141.7	1	0	-425	0	0	0
2	Rabie ,M (Mizelle)	4	1336.9	1124.4	3	1294.1	1195.2	1	1198.6	911.9	0	0	0
3	Verster ,J (Juan Marais)	2	1	0	2	1	0	0	0	0	0	0	0
3	Verster ,J (Juan Marais)	2	1385.3	1385.3	2	1380.9	1385.3	0	0	0	0	0	0
4	Etsala-Kourou ,J (Josu?�????)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Etsala-Kourou ,J (Josu?�????)	2	1282.9	857.9	2	1239.3	857.9	0	0	0	0	0	0
5	Van Den Berg ,T (Teagan)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	Van Den Berg ,T (Teagan)	2	1347.4	1559.9	2	1359.5	1559.9	0	0	0	0	0	0
6	Fritz ,U (Ulysse)	2	1	0	2	1	0	0	0	0	0	0	0
6	Fritz ,U (Ulysse)	2	1462.3	1462.3	2	1466	1462.3	0	0	0	0	0	0
7	Muza ,B (Benjamin)	2	2	425	2	2	425	0	0	0	0	0	0
7	Muza ,B (Benjamin)	2	1391.3	1816.3	2	1382.1	1816.3	0	0	0	0	0	0
8	Boamah ,J (Jack)	2	1	0	2	1	0	0	0	0	0	0	0
8	Boamah ,J (Jack)	2	1220.8	1220.8	2	1224.6	1220.8	0	0	0	0	0	0
9	De Villiers ,A (Azalea)	2	2	425	2	2	425	0	0	0	0	0	0
9	De Villiers ,A (Azalea)	2	1072.1	1497.1	2	1057	1497.1	0	0	0	0	0	0
10	Petersen ,B (Bryson)	2	0	-425	1	0	-425	1	0	-425	0	0	0
10	Petersen ,B (Bryson)	2	1425.8	1000.8	1	1381.6	1000.8	1	1194.8	1000.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Plaatjies, A (Ayren)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms