Chess South Africa Ratings Database

PLAYER PAGE

Personal

Heasman, J (JD)

Chess SA id

1160161827

FIDE id

Date of birth

2016-08-12 (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	1225.6	1237.3	1187.4	1200
Raw rating	1214.8	1231.6	1147.5	1200
Weighted rating	1225.6	1237.3	1187.4	1200
Weighted performance	1097.5	1109.9	0	0
Floor	814.8	822.4	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	162.4	158.5	178.7	165.8
Highest rating	1314.8 2025-05-05	1322.4 2025-05-05	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1314.8 2025-05-05	1322.4 2025-05-05	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1314.8 2018-10-01	1322.4 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1297.4 2025-04-01	1301.8 2024-07-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.6	1.2	-3.6	0
New rating	1226.2	1238.4	1183.7	1200
Analysis
Rating	1225.6	1237.3	1187.4	1200
Raw rating	1214.8	1231.6	1147.5	1200
Weighted rating	1225.6	1237.3	1187.4
Weighted performance	1097.5	1109.9	0
K-factor	36	36	36	36
Floor	814.8	822.4	700	700
Max/Min rating change allowed	162.4	158.5	178.7	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	1214.8	1231.6	1147.5	1200
New weighted rating	1226.2	1238.4	1183.7	1200
New weighted performance	1090.1	1102	0	0
Temp new rating	1226.2	1238.4	1183.7	1200
Temp new rating +/-	0.6	1.2	-3.6	0
Final new rating +/-	0.6	1.2	-3.6	0
New rating	1226.2	1238.4	1183.7	1200
New K-factor	36	36	36	36
New floor	814.8	822.4	700	700

Item	Main	Standard	Rapid
	0	0	0
	63	41	22
	20	20	0
	5	5	0
	0	0	0
	0	0	0
History	88	66	22

Games since
	Main 83	Standard 61		Rapid 22		Blitz 0
Gender	Male
Age group	U10
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3951		1317		363
Male	2981		943		248
U10	365		120		44
U10 Male	278		87		30
Standard
	RSA		Province		Region
Overall	3769		1067		363
Male	2872		749		246
U10	334		98		48
U10 Male	261		71		32
Rapid
	RSA		Province		Region
Overall	1730		849		61
Male	1305		636		46
U10	175		93		7
U10 Male	128		73		5
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	63	28.5	45.24	-40.5	1284.5	1244
Standard	41	20.5	50	0	1260.3	1260.3
Rapid	22	8	36.36	-115.9	1329.5	1213.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	88	39.5	44.89	-43.5	1261.4	1217.9
Standard	66	31.5	47.73	-19.3	1238.6	1219.3
Rapid	22	8	36.36	-115.9	1329.5	1213.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1214.8	1231.6	1147.5	1200
2025-11-30	1214.8	1231.6	1147.5	1200
2025-11-01	1211.1	1231.6	1143.2	1200
2025-09-30	1225.3	1231.6	1199.7	1200
2025-09-01	1225.3	1231.6	1199.7	1200
2025-08-01	1225.3	1231.6	1199.7	1200
2025-07-01	1218.2	1223	1199.5	1200
2025-06-01	1295.7	1322.4	1197	1200
2025-05-01	1314.8	1322.4	1200	1200
2025-04-01	1297.4	1301.8	1200	1200
2025-03-01	1259.7	1264	1200	1200
2025-02-01	1205.4	1220.6	1200	1200
2025-01-01	1205.4	1220.6	1200	1200
2024-12-01	1205.4	1220.6	1200	1200
2024-11-01	1205.4	1220.6	1200	1200
2024-10-01	1205.4	1220.6	1200	1200
2024-09-01	1205.4	1220.6	1200	1200
2024-11-01	1205.4	1220.6	1200	1200
2024-07-01	1140.6	1142.8	1200	1200
2024-06-01	1140.6	1142.8	1200	1200
2024-05-01	1140.6	1142.8	1200	1200
2024-04-01	1140.6	1142.8	1200	1200
2024-03-01	1142.1	1141	1200	1200
2024-02-01	1133.1	1128	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	Voories Skaaktoernooi 2025 (O9)	2025-11-08	2025-11-08	Rapid	Eden (WEG)	5	5	2.5	Yes	Analysis
2	HCPS Invitational Rapid Tournament 2025 (U9)	2025-10-18	2025-10-18	Rapid	Eden (WEG)	6	5	0.5	Yes	Analysis
3	George Top Schools 2025 (U9)	2025-07-26	2025-07-26	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
4	2025 WC Rural Cup (U10)	2025-06-14	2025-06-15	Standard	Eden (WEG)	6	6	0	Yes	Analysis
5	Dennie Chess Rapid Tournament Open 2025 (U9)	2025-05-24	2025-05-24	Rapid	Eden (WEG)	5	5	3	Yes	Analysis
6	Southern Knights Rapid 2025 (C)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	7	2	Yes	Analysis
7	Eden Chess Trials 2 2025 (U10)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	10	6	Yes	Analysis
8	Eden Schools Chess Trials 1 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	3	Yes	Analysis
9	George Schools Chess Trials 3 2025 (U9 Boys)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	5	3	Yes	Analysis
10	George Schools Chess Trials 2 2025 (U9 Boys)	2025-02-15	2025-02-15	Standard	Eden (WEG)	5	5	3	Yes	Analysis
11	George Schools Chess Trials 1 2025 (U9 Boys)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	5	3	Yes	Analysis
12	George Primary Top Schools 2024 (U9)	2024-07-20	2024-07-20	Standard	Eden (WEG)	5	5	4	Yes	Analysis
13	George Schools Trials 3 2024 (U9 Boys)	2024-03-02	2024-03-02	Standard	Eden (WEG)	5	5	2	Yes	Analysis
14	George Schools Trials 2 2024 (U9 Boys)	2024-02-17	2024-02-17	Standard	Eden (WEG)	5	5	2	Yes	Analysis
15	George Schools Trials 1 2024 (U9 Boys)	2024-02-03	2024-02-03	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
16	Western Cape Top Schools 2023 (U7 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	5	5	0.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Davis, M (Mason)				Opponent Mhlakaza, S (Siphosethu)
2	5	Tournament George Primary Top Schools 2024				Tournament George Schools Chess Trials 1 2025
		date 2024-07-20	rnd 4	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Damane, D (Dinga)				Opponent Kotze, B (Barend)
3	3	Tournament Eden Chess Trials 2 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-15	rnd 5	type Standard	result 1	date 2025-04-12	rnd 7	type Standard	result 1
		Opponent Codier, A (Aidan)				Opponent Modupe, L (Lesego)

#	Games	Start				End
1	5	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Davis, M (Mason)				Opponent Mhlakaza, S (Siphosethu)
2	5	Tournament George Primary Top Schools 2024				Tournament George Schools Chess Trials 1 2025
		date 2024-07-20	rnd 4	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Damane, D (Dinga)				Opponent Kotze, B (Barend)
3	3	Tournament Eden Chess Trials 2 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-15	rnd 5	type Standard	result 1	date 2025-04-12	rnd 7	type Standard	result 1
		Opponent Codier, A (Aidan)				Opponent Modupe, L (Lesego)

#	Games	Start				End
1	2	Tournament Dennie Chess Rapid Tournament Open 2025				Tournament Dennie Chess Rapid Tournament Open 2025
		date 2025-05-24	rnd 3	type Rapid	result 1	date 2025-05-24	rnd 4	type Rapid	result 1
		Opponent Salmons, C (Cayden)				Opponent Bruiners, J (Jeanne)
2	1	Tournament Dennie Chess Rapid Tournament Open 2025				Tournament Dennie Chess Rapid Tournament Open 2025
		date 2025-05-24	rnd 1	type Rapid	result 1	date 2025-05-24	rnd 1	type Rapid	result 1
		Opponent Whiteman, H (Harry)				Opponent Whiteman, H (Harry)
3	1	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-05-03	rnd 6	type Rapid	result 1
		Opponent Booysen, J (Joshua)				Opponent Booysen, J (Joshua)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Davis, M (Mason)				Opponent Mhlakaza, S (Siphosethu)
2	5	Tournament George Primary Top Schools 2024				Tournament George Schools Chess Trials 1 2025
		date 2024-07-20	rnd 4	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Damane, D (Dinga)				Opponent Kotze, B (Barend)
3	3	Tournament Eden Chess Trials 2 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-15	rnd 5	type Standard	result 1	date 2025-04-12	rnd 7	type Standard	result 1
		Opponent Codier, A (Aidan)				Opponent Modupe, L (Lesego)

#	Games	Start				End
1	5	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Davis, M (Mason)				Opponent Mhlakaza, S (Siphosethu)
2	5	Tournament George Primary Top Schools 2024				Tournament George Schools Chess Trials 1 2025
		date 2024-07-20	rnd 4	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Damane, D (Dinga)				Opponent Kotze, B (Barend)
3	3	Tournament Eden Chess Trials 2 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-15	rnd 5	type Standard	result 1	date 2025-04-12	rnd 7	type Standard	result 1
		Opponent Codier, A (Aidan)				Opponent Modupe, L (Lesego)

#	Games	Start				End
1	2	Tournament Dennie Chess Rapid Tournament Open 2025				Tournament Dennie Chess Rapid Tournament Open 2025
		date 2025-05-24	rnd 3	type Rapid	result 1	date 2025-05-24	rnd 4	type Rapid	result 1
		Opponent Salmons, C (Cayden)				Opponent Bruiners, J (Jeanne)
2	1	Tournament Dennie Chess Rapid Tournament Open 2025				Tournament Dennie Chess Rapid Tournament Open 2025
		date 2025-05-24	rnd 1	type Rapid	result 1	date 2025-05-24	rnd 1	type Rapid	result 1
		Opponent Whiteman, H (Harry)				Opponent Whiteman, H (Harry)
3	1	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-05-03	rnd 6	type Rapid	result 1
		Opponent Booysen, J (Joshua)				Opponent Booysen, J (Joshua)

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	Hessie ,L (Luke)	4	0	-425	3	0	-425	1	0	-425	0	0	0
1	Hessie ,L (Luke)	4	1371	946	3	1377.4	946	1	1252.5	946	0	0	0
2	Stoffels ,C (Connor)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Stoffels ,C (Connor)	3	1276.4	1134.7	3	1274.9	1134.7	0	0	0	0	0	0
3	Edons ,M (Mihandro)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Edons ,M (Mihandro)	3	1295.6	870.6	3	1281.9	870.6	0	0	0	0	0	0
4	Bruiners ,J (Jeanne)	3	1.5	0	1	0.5	0	2	1	0	0	0	0
4	Bruiners ,J (Jeanne)	3	1332.7	1332.7	1	1291	1332.7	2	1199.9	1332.7	0	0	0
5	Salmons ,C (Cayden)	3	2	141.7	1	1	425	2	1	0	0	0	0
5	Salmons ,C (Cayden)	3	1204.5	1346.2	1	1200	1629.5	2	1200	1204.5	0	0	0
6	Mhlakaza ,S (Siphosethu)	2	2	425	2	2	425	0	0	0	0	0	0
6	Mhlakaza ,S (Siphosethu)	2	1118.2	1543.2	2	1102.4	1543.2	0	0	0	0	0	0
7	Vivier ,J (Jaycee)	2	1	0	2	1	0	0	0	0	0	0	0
7	Vivier ,J (Jaycee)	2	1199.7	1199.7	2	1201.6	1199.7	0	0	0	0	0	0
8	Rheeder ,L (Logan)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Rheeder ,L (Logan)	2	1215.4	790.4	2	1225.5	790.4	0	0	0	0	0	0
9	Lengisi ,T (Thando)	2	1	0	2	1	0	0	0	0	0	0	0
9	Lengisi ,T (Thando)	2	1202.8	1202.8	2	1204.3	1202.8	0	0	0	0	0	0
10	Flores ,Z (Zhoe)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Flores ,Z (Zhoe)	2	1419.9	994.9	2	1432.3	994.9	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

Heasman, J (JD)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms