Chess South Africa Ratings Database

PLAYER PAGE

Personal

Kriel, Z (Zaydon)

Chess SA id

1090131841

FIDE id

Date of birth

2009-07-01 (U18)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-21

Personal details last changed

1900-01-01

Junior GPX Games

22.1

Junior GPX Points

1149.3

Item	Main	Standard	Rapid	Blitz
Rating	1360.7	1285.7	1408.4	1200
Raw rating	1354.2	1280.6	1408.4	1200
Weighted rating	1360.7	1285.7	1396.9	1200
Weighted performance	1203.9	1154.4	1252.3	0
Floor	906.8	827.3	968.2	700
K-factor	32	36	32	36
Min/Max rating change allowed	133.1	147.8	123.2	165.8
Highest rating	1467.8 2024-08-01	1327.3 2024-12-01	1483.5 2024-06-01	1200 2018-10-01
Highest raw rating	1406.8 2024-10-01	1327.3 2024-12-01	1468.2 2024-07-01	1200 2024-02-01
Highest weighted rating	1354.2 2025-08-01	1280.6 2025-08-01	1384.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1467.8 2024-08-01	1312.9 2025-01-01	1483.5 2024-06-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	1.3	1	0	0
New rating	1361.9	1286.7	1408.4	1200
Analysis
Rating	1360.7	1285.7	1408.4	1200
Raw rating	1354.2	1280.6	1408.4	1200
Weighted rating	1360.7	1285.7	1396.9
Weighted performance	1203.9	1154.4	1252.3
K-factor	32	36	32	36
Floor	906.8	827.3	968.2	700
Max/Min rating change allowed	133.1	147.8	123.2	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	1354.2	1280.6	1408.4	1200
New weighted rating	1361.9	1286.7	1400	1200
New weighted performance	1196.4	1147	1244.2	0
Temp new rating	1361.9	1286.7	1408.4	1200
Temp new rating +/-	1.3	1	0	0
Final new rating +/-	1.3	1	0	0
New rating	1361.9	1286.7	1408.4	1200
New K-factor	32	36	32	36
New floor	906.8	827.3	968.2	700

Item	Main	Standard	Rapid
	0	0	0
	20	10	10
	50	15	35
	18	5	13
	5	0	5
	0	0	0
History	99	36	63

Games since
	Main 70	Standard 25		Rapid 45		Blitz 0
Gender	Male
Age group	U18
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2612		835		70
Male	2100		644		51
U18	408		119		17
U18 Male	346		96		15
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	492		250		49
Male	423		216		35
U18	55		31		12
U18 Male	49		28		10
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	20	11	55	42.5	1267.7	1310.2
Standard	10	4	40	-85	1325.1	1240.1
Rapid	10	7	70	170	1210.2	1380.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	99	61	61.62	98.7	1251.5	1350.3
Standard	36	19	52.78	23.6	1322.9	1346.5
Rapid	63	42	66.67	141.7	1210.8	1352.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1354.2	1280.6	1408.4	1200
2025-09-30	1354.2	1280.6	1408.4	1200
2025-09-01	1354.2	1280.6	1408.4	1200
2025-08-01	1354.2	1280.6	1408.4	1200
2025-07-01	1371.9	1293.4	1408.4	1200
2025-06-01	1360.7	1293.4	1390.5	1200
2025-05-01	1360.7	1293.4	1390.5	1200
2025-04-01	1360.7	1293.4	1390.5	1200
2025-03-01	1384.2	1327.3	1390.5	1200
2025-02-01	1394.4	1327.3	1402.6	1200
2025-01-01	1394.4	1327.3	1402.6	1200
2024-12-01	1394.4	1327.3	1402.6	1200
2024-11-01	1406.8	1318.3	1435.6	1200
2024-10-01	1406.8	1318.3	1435.6	1200
2024-09-01	1404.7	1287.3	1435.6	1200
2024-08-01	1350.8	1212.4	1435.6	1200
2024-07-01	1361	1212.4	1468.2	1200
2024-09-01	1314.5	1212.4	1377.9	1200
2024-05-01	1241.9	1212.4	1253.6	1200
2024-04-01	1241.9	1212.4	1253.6	1200
2024-03-01	1241.9	1212.4	1253.6	1200
2024-02-01	1235	1212.4	1236.3	1200
2024-01-01	1235	1212.4	1236.3	1200
2023-12-01	1235	1212.4	1236.3	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	Deep Blue Open 2025 (A)	2025-06-21	2025-06-21	Standard	West Coast (WCU)	5	4	1	Yes	Analysis
2	Shakirah Ruiters Youth Tournament 2025 (Advanced)	2025-06-16	2025-06-16	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
3	West Coast Schools Chess Prestige 2025 (U17 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
4	Upper West Coast Presrige 2025 (U17 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Deep Blue Open 2025 (A)	2025-06-21	2025-06-21	Standard	West Coast (WCU)	5	4	1	Yes	Analysis
2	Shakirah Ruiters Youth Tournament 2025 (Advanced)	2025-06-16	2025-06-16	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
3	West Coast Schools Chess Prestige 2025 (U17 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
4	Upper West Coast Presrige 2025 (U17 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
5	PR Booyse Standard Tournament 2024 (Elite)	2024-11-02	2024-11-02	Standard	West Coast (WCU)	5	5	2	Yes	Analysis
6	West Coast Grand Challange League 2024 (HS Development)	2024-10-26	2024-10-26	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
7	7th Annual UFH Heritage Open 2024 (D)	2024-09-21	2024-09-21	Standard	Amathole (EAL)	5	0	0	No	Analysis
8	Western Cape Top Schools Championship 2024 (U15 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	3	Yes	Analysis
9	Pedro Booyse Top Schools Championships 2024 (U15)	2024-07-20	2024-07-20	Standard	West Coast (WCU)	5	4	4	Yes	Analysis
10	Pedro Booyse Annual Rapid 2024 (Open)	2024-07-06	2024-07-06	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
11	Lambertsbay Youth Open 2024 (Elite)	2024-06-17	2024-06-17	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
12	Brenton Cupido West Coast Schools Championship 2024 (High School)	2024-05-25	2024-05-25	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
13	Bo-Weskus Skole Skaak Top Skole 2024 (O15)	2024-05-11	2024-05-11	Rapid	West Coast (WCU)	5	5	5	Yes	Analysis
14	West Coast Schools Chess Prestige Championships 2024 (U15 Boys)	2024-02-24	2024-02-24	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
15	Bo-Weskus Skole Prestige 2024 (O15 Seuns)	2024-02-10	2024-02-10	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
16	Pedro Booyse Top Schools 2023 (High School)	2023-07-29	2023-07-29	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
17	Upper West Coast Top Schools Championship 2023 (High School)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
18	West Coast Schools Development Championships 2023 (U15 Boys)	2023-04-22	2023-04-22	Rapid	West Coast (WCU)	5	4	4	Yes	Analysis
19	Bo-Weskus Skole Prestige 2023 (O15 Seuns)	2023-02-11	2023-02-11	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
20	Bo-Weskus Top Skole 2022 (O13)	2022-06-11	2022-06-11	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
21	Bo-Weskus Skole Prestige 2020 (O11 Seuns)	2020-02-15	2020-02-15	Standard	West Coast (WCU)	6	6	3	Yes	Analysis

#	Games	Start				End
1	9	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-02-24	rnd 5	type Rapid	result 1	date 2024-05-25	rnd 3	type Rapid	result 1
		Opponent Syster, M (Macneil)				Opponent Adams, J (Jenito)
2	5	Tournament West Coast Schools Development Championships 2023				Tournament Upper West Coast Top Schools Championship 2023
		date 2023-04-22	rnd 2	type Rapid	result 1	date 2023-06-10	rnd 1	type Rapid	result 1
		Opponent Komboni, I (Isaiah)				Opponent Woudberg, R (Ruan)
3	5	Tournament Bo-Weskus Skole Prestige 2020				Tournament Bo-Weskus Top Skole 2022
		date 2020-02-15	rnd 3	type Standard	result 0.5	date 2022-06-11	rnd 1	type Rapid	result 1
		Opponent Djeudje, K (Keanen)				Opponent Kouter, C (Carlyle)

#	Games	Start				End
1	4	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 4	type Standard	result 1
		Opponent Adonis, J (Jermaine)				Opponent Swarts, C (Cleowin)
2	4	Tournament Bo-Weskus Skole Prestige 2020				Tournament Bo-Weskus Skole Prestige 2020
		date 2020-02-15	rnd 3	type Standard	result 0.5	date 2020-02-15	rnd 6	type Standard	result 1
		Opponent Djeudje, K (Keanen)				Opponent Coetzee, C (Chris)
3	3	Tournament Pedro Booyse Top Schools 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-07-29	rnd 2	type Standard	result 1	date 2023-07-29	rnd 4	type Standard	result 1
		Opponent Kruger, J (Jamie Leigh)				Opponent Cloete, J (Jayden)

#	Games	Start				End
1	9	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-02-24	rnd 5	type Rapid	result 1	date 2024-05-25	rnd 3	type Rapid	result 1
		Opponent Syster, M (Macneil)				Opponent Adams, J (Jenito)
2	5	Tournament West Coast Schools Development Championships 2023				Tournament Upper West Coast Top Schools Championship 2023
		date 2023-04-22	rnd 2	type Rapid	result 1	date 2023-06-10	rnd 1	type Rapid	result 1
		Opponent Komboni, I (Isaiah)				Opponent Woudberg, R (Ruan)
3	4	Tournament Brenton Cupido West Coast Schools Championship 2024				Tournament Lambertsbay Youth Open 2024
		date 2024-05-25	rnd 5	type Rapid	result 1	date 2024-06-17	rnd 3	type Rapid	result 1
		Opponent Baardman, J (Jason)				Opponent Ellman, A (Anne-Belle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	9	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-02-24	rnd 5	type Rapid	result 1	date 2024-05-25	rnd 3	type Rapid	result 1
		Opponent Syster, M (Macneil)				Opponent Adams, J (Jenito)
2	5	Tournament West Coast Schools Development Championships 2023				Tournament Upper West Coast Top Schools Championship 2023
		date 2023-04-22	rnd 2	type Rapid	result 1	date 2023-06-10	rnd 1	type Rapid	result 1
		Opponent Komboni, I (Isaiah)				Opponent Woudberg, R (Ruan)
3	4	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 4	type Standard	result 1
		Opponent Adonis, J (Jermaine)				Opponent Swarts, C (Cleowin)

#	Games	Start				End
1	4	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 4	type Standard	result 1
		Opponent Adonis, J (Jermaine)				Opponent Swarts, C (Cleowin)
2	3	Tournament Pedro Booyse Top Schools 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-07-29	rnd 2	type Standard	result 1	date 2023-07-29	rnd 4	type Standard	result 1
		Opponent Kruger, J (Jamie Leigh)				Opponent Cloete, J (Jayden)
3	2	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-08-30	rnd 4	type Standard	result 1	date 2024-09-01	rnd 5	type Standard	result 1
		Opponent Marx, M (Marnu)				Opponent Arendse, Q (Quinwinne)

#	Games	Start				End
1	9	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-02-24	rnd 5	type Rapid	result 1	date 2024-05-25	rnd 3	type Rapid	result 1
		Opponent Syster, M (Macneil)				Opponent Adams, J (Jenito)
2	5	Tournament West Coast Schools Development Championships 2023				Tournament Upper West Coast Top Schools Championship 2023
		date 2023-04-22	rnd 2	type Rapid	result 1	date 2023-06-10	rnd 1	type Rapid	result 1
		Opponent Komboni, I (Isaiah)				Opponent Woudberg, R (Ruan)
3	4	Tournament Brenton Cupido West Coast Schools Championship 2024				Tournament Lambertsbay Youth Open 2024
		date 2024-05-25	rnd 5	type Rapid	result 1	date 2024-06-17	rnd 3	type Rapid	result 1
		Opponent Baardman, J (Jason)				Opponent Ellman, A (Anne-Belle)

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	Swarts ,C (Cleowin)	2	1	0	1	1	425	1	0	-425	0	0	0
1	Swarts ,C (Cleowin)	2	1212.2	1212.2	1	1167.2	1637.2	1	1200	787.2	0	0	0
2	Van Der Westhuizen ,C (Courtney)	2	2	425	1	1	425	1	1	425	0	0	0
2	Van Der Westhuizen ,C (Courtney)	2	1268.8	1693.8	1	1211.9	1693.8	1	1176.8	1693.8	0	0	0
3	Berend ,L (Luciano)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Berend ,L (Luciano)	2	1266.3	841.3	1	1166.4	841.3	1	1317.8	841.3	0	0	0
4	Van Rooi ,C (Curtley)	2	1	0	1	1	425	1	0	-425	0	0	0
4	Van Rooi ,C (Curtley)	2	1237.3	1237.3	1	1200	1662.3	1	1200	812.3	0	0	0
5	Kamfer ,J (Johnlin)	2	2	425	1	1	425	1	1	425	0	0	0
5	Kamfer ,J (Johnlin)	2	1203.3	1628.3	1	1200	1628.3	1	1231.9	1628.3	0	0	0
6	Huysamen ,A (Albertus)	2	0	-425	1	0	-425	1	0	-425	0	0	0
6	Huysamen ,A (Albertus)	2	1194.1	769.1	1	1154.8	769.1	1	1249.6	769.1	0	0	0
7	Lombaard ,J (Jadrin)	2	1	0	1	0	-425	1	1	425	0	0	0
7	Lombaard ,J (Jadrin)	2	1315.6	1315.6	1	1340.3	890.6	1	1260.4	1740.6	0	0	0
8	Jacobs ,A (Aiden-Lee)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Jacobs ,A (Aiden-Lee)	2	1369.2	944.2	1	1461.5	944.2	1	1240.5	944.2	0	0	0
9	Boks ,M (Marquin)	2	1	0	0	0	0	2	1	0	0	0	0
9	Boks ,M (Marquin)	2	1180.1	1180.1	0	0	0	2	1176.8	1180.1	0	0	0
10	September ,G (G-Naro)	2	2	425	0	0	0	2	2	425	0	0	0
10	September ,G (G-Naro)	2	1111.2	1536.2	0	0	0	2	1154.4	1536.2	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Kriel, Z (Zaydon)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms