Chess South Africa Ratings Database

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Personal

Stolz, J (Justin)

Chess SA id

1130140947

FIDE id

Date of birth

2013-12-17 (U14)

Gender

Male

Region

Sarah Baartman (ESB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-23

Personal details last changed

1900-01-01

Junior GPX Games

44.6

Junior GPX Points

1268.1

Item	Main	Standard	Rapid	Blitz
Rating	1482.5	1491.9	1339.7	1200
Raw rating	1482.5	1491.9	1339.7	1200
Weighted rating	1349.1	1344.1	1290.4	1200
Weighted performance	1376.3	1429.4	1274.5	0
Floor	993.3	991.9	839.7	700
K-factor	32	32	36	36
Min/Max rating change allowed	110.9	109.4	135.9	165.8
Highest rating	1493.3 2025-06-01	1491.9 2025-06-01	1638.9 2022-08-01	1200 2018-10-01
Highest raw rating	1493.3 2025-06-01	1491.9 2025-06-01	1339.7 2025-09-01	1200 2024-02-01
Highest weighted rating	1334.1 2025-09-01	1491.9 2024-10-01	1284.8 2025-09-01	1200 2018-10-01
Highest weighted performance	1493.3 2025-06-01	1491.9 2024-06-01	1638.9 2022-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1482.5	1491.9	1339.7	1200
Analysis
Rating	1482.5	1491.9	1339.7	1200
Raw rating	1482.5	1491.9	1339.7	1200
Weighted rating	1349.1	1344.1	1290.4
Weighted performance	1376.3	1429.4	1274.5
K-factor	32	32	36	36
Floor	993.3	991.9	839.7	700
Max/Min rating change allowed	110.9	109.4	135.9	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	1482.5	1491.9	1339.7	1200
New weighted rating	1363.3	1359.5	1295.7	1200
New weighted performance	1375.8	1428.9	1274.1	0
Temp new rating	1482.5	1491.9	1339.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1482.5	1491.9	1339.7	1200
New K-factor	32	32	36	36
New floor	993.3	991.9	839.7	700

Item	Main	Standard	Rapid
	0	0	0
	63	39	24
	28	22	6
	41	30	11
	37	24	13
	0	0	0
History	169	115	54

Games since
	Main 99	Standard 69		Rapid 30		Blitz 0
Gender	Male
Age group	U14
Region	Sarah Baartman (ESB)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	1396		180		39
Male	1192		157		33
U14	202		34		10
U14 Male	163		27		7
Standard
	RSA		Province		Region
Overall	1241		159		33
Male	1056		139		30
U14	180		30		8
U14 Male	143		25		7
Rapid
	RSA		Province		Region
Overall	796		49		20
Male	661		42		14
U14	163		10		6
U14 Male	123		6		2
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	35	55.56	47.2	1372.8	1420
Standard	39	20.5	52.56	21.8	1377.2	1399
Rapid	24	14.5	60.42	88.5	1365.7	1454.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	169	92.5	54.73	40.2	1280.8	1321.1
Standard	115	60	52.17	18.5	1282.6	1301.1
Rapid	54	32.5	60.19	86.6	1277.1	1363.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1482.5	1491.9	1339.7	1200
2025-09-01	1482.5	1491.9	1339.7	1200
2025-08-01	1485.3	1491.9	1326.3	1200
2025-07-01	1485.3	1491.9	1326.3	1200
2025-06-01	1493.3	1491.9	1278.2	1200
2025-05-01	1361.5	1358.3	1278.2	1200
2025-04-01	1276.5	1272.6	1278.2	1200
2025-03-01	1258.1	1247.5	1278.2	1200
2025-02-01	1258.8	1242.6	1278.2	1200
2025-01-01	1258.8	1242	1278.2	1200
2024-12-01	1258.8	1242	1278.2	1200
2024-11-01	1258.8	1242	1278.2	1200
2024-10-01	1258.8	1242	1278.2	1200
2024-09-01	1258.8	1242	1278.2	1200
2024-08-01	1258.8	1242	1278.2	1200
2024-07-01	1288.7	1272.6	1278.2	1200
2024-06-01	1275.7	1254.2	1278.2	1200
2024-08-01	1251.5	1251	1231.8	1200
2024-04-01	1251.5	1251	1231.8	1200
2024-03-01	1251.5	1251	1231.8	1200
2024-02-01	1221.3	1215.4	1231.8	1200
2024-01-01	1221.3	1215.4	1231.8	1200
2023-12-01	1221.3	1215.4	1231.8	1200
2023-11-01	1221.3	1215.4	1231.8	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	SBD Invitational 2025 (B)	2025-08-23	2025-08-23	Rapid	Sarah Baartman (ESB)	10	8	5	Yes	Analysis
2	Holiday Fever 2025 (B)	2025-06-21	2025-06-21	Rapid	Sarah Baartman (ESB)	11	10	6	Yes	Analysis
3	SBD Invitational 2025 (3)	2025-06-14	2025-06-14	Rapid	Sarah Baartman (ESB)	7	6	3.5	Yes	Analysis
4	Fountains Mall SBD Open 2025 (C)	2025-05-17	2025-05-17	Standard	Sarah Baartman (ESB)	6	5	3.5	Yes	Analysis
5	SBDCA Closed 2025 (U14 Boys)	2025-05-10	2025-05-10	Standard	Sarah Baartman (ESB)	6	6	3.5	Yes	Analysis
6	SBD Trials J Bay 19 April 2025 (U14 Boys)	2025-04-19	2025-04-19	Standard	Sarah Baartman (ESB)	6	6	3.5	Yes	Analysis
7	SBDCU Trial 6 2025 (U14)	2025-03-15	2025-03-15	Standard	Sarah Baartman (ESB)	5	5	3	Yes	Analysis
8	Kouga Mayor's Cup 2025 (U13)	2025-03-08	2025-03-08	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
9	SBDCU Trials 3 2025 (U14)	2025-02-08	2025-02-08	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
10	SBDCU Fundraiser 2025 (U13)	2025-02-01	2025-02-01	Standard	Sarah Baartman (ESB)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	SBD Invitational 2025 (B)	2025-08-23	2025-08-23	Rapid	Sarah Baartman (ESB)	10	8	5	Yes	Analysis
2	Holiday Fever 2025 (B)	2025-06-21	2025-06-21	Rapid	Sarah Baartman (ESB)	11	10	6	Yes	Analysis
3	SBD Invitational 2025 (3)	2025-06-14	2025-06-14	Rapid	Sarah Baartman (ESB)	7	6	3.5	Yes	Analysis
4	Fountains Mall SBD Open 2025 (C)	2025-05-17	2025-05-17	Standard	Sarah Baartman (ESB)	6	5	3.5	Yes	Analysis
5	SBDCA Closed 2025 (U14 Boys)	2025-05-10	2025-05-10	Standard	Sarah Baartman (ESB)	6	6	3.5	Yes	Analysis
6	SBD Trials J Bay 19 April 2025 (U14 Boys)	2025-04-19	2025-04-19	Standard	Sarah Baartman (ESB)	6	6	3.5	Yes	Analysis
7	SBDCU Trial 6 2025 (U14)	2025-03-15	2025-03-15	Standard	Sarah Baartman (ESB)	5	5	3	Yes	Analysis
8	Kouga Mayor's Cup 2025 (U13)	2025-03-08	2025-03-08	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
9	SBDCU Trials 3 2025 (U14)	2025-02-08	2025-02-08	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
10	SBDCU Fundraiser 2025 (U13)	2025-02-01	2025-02-01	Standard	Sarah Baartman (ESB)	5	5	1	Yes	Analysis
11	SBDCU Closed Trials 2024 (U12 Boys)	2024-07-27	2024-07-27	Standard	Sarah Baartman (ESB)	5	5	1.5	Yes	Analysis
12	SBDCU Trial 3 2024 (U12)	2024-06-01	2024-06-01	Standard	Sarah Baartman (ESB)	5	5	3	Yes	Analysis
13	Fountains Mall 2024 (Primary School)	2024-05-18	2024-05-18	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
14	Humansdorp CMC Schools Trials 2024 (U11 Boys)	2024-05-10	2024-05-10	Rapid	Sarah Baartman (ESB)	6	6	4	Yes	Analysis
15	SBDCU Trial 1 2024 (U12)	2024-02-24	2024-02-24	Standard	Sarah Baartman (ESB)	6	6	4	Yes	Analysis
16	Eastern Cape Provincial Individual Championship 2023 (U12 Boys)	2023-10-05	2023-10-05	Standard	Nelson Mandela Bay (ENM)	7	6	2	Yes	Analysis
17	Eastern Cape Chess Team Championship 2023 (U12)	2023-10-07	2023-10-08	Standard	Sarah Baartman (ESB)	5	2	1	Yes	Analysis
18	Stulting Sportdag 2023 (Senior)	2023-08-25	2023-08-25	Rapid	Sarah Baartman (ESB)	6	6	4	Yes	Analysis
19	SBDCU Closed Trials 2023 (U12 Boys)	2023-07-29	2023-07-29	Standard	Sarah Baartman (ESB)	6	6	2.5	Yes	Analysis
20	Paul Sauer Chess Tournament 2023 (Senior)	2023-05-05	2023-05-05	Rapid	Sarah Baartman (ESB)	6	5	0.5	Yes	Analysis
21	Fountains Mall Open 2023 (Development)	2023-05-13	2023-05-13	Standard	Sarah Baartman (ESB)	6	6	4	Yes	Analysis
22	SBDCU Trial 2 2023 (U12)	2023-04-01	2023-04-01	Standard	Sarah Baartman (ESB)	5	5	3.5	Yes	Analysis
23	SBDCU Trial 1 2023 (U12)	2023-03-05	2023-03-05	Standard	Sarah Baartman (ESB)	5	5	3	Yes	Analysis
24	Pharos Closed 3 2022	2022-09-14	2022-09-14	Rapid	Sarah Baartman (ESB)	7	7	3.5	Yes	Analysis
25	Stulting Sports Day 2022 (Juniors)	2022-08-26	2022-08-26	Rapid	Sarah Baartman (ESB)	6	6	6	Yes	Analysis
26	Kouga Mayarol Cup 2022 (U9)	2022-07-23	2022-07-23	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
27	SBDCU Trials 2022 (U10)	2022-06-25	2022-06-25	Standard	Sarah Baartman (ESB)	6	0	0	No	Analysis
28	Pharos Closed 2 2022	2022-06-11	2022-06-11	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
29	Fountains Mall Open Tournament 2022 (C)	2022-05-14	2022-05-14	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis
30	Closed Pharos Chess Tournament 2022	2022-05-28	2022-05-28	Standard	Sarah Baartman (ESB)	6	6	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Stulting Sports Day 2022				Tournament Stulting Sports Day 2022
		date 2022-08-26	rnd 1	type Rapid	result 1	date 2022-08-26	rnd 6	type Rapid	result 1
		Opponent Bredell, A (Alcapone)				Opponent Slabbert, S (Sophia)
2	5	Tournament Fountains Mall SBD Open 2025				Tournament SBD Invitational 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-06-14	rnd 1	type Rapid	result 1
		Opponent Booisen, M (Mia Faith)				Opponent Rudolph, K (Kevin-Clark)
3	5	Tournament Kouga Mayor's Cup 2025				Tournament SBDCU Trial 6 2025
		date 2025-03-08	rnd 5	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent O'Connel, C (Christhian Trenley)				Opponent Tadese, E (Eldana)

#	Games	Start				End
1	5	Tournament Kouga Mayor's Cup 2025				Tournament SBDCU Trial 6 2025
		date 2025-03-08	rnd 5	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent O'Connel, C (Christhian Trenley)				Opponent Tadese, E (Eldana)
2	4	Tournament Fountains Mall SBD Open 2025				Tournament Fountains Mall SBD Open 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-17	rnd 6	type Standard	result 0.5
		Opponent Booisen, M (Mia Faith)				Opponent Hugo, K (Kian)
3	4	Tournament SBDCA Closed 2025				Tournament SBDCA Closed 2025
		date 2025-05-10	rnd 1	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Maxim, Z (Zane)				Opponent Wang, C (Chen)

#	Games	Start				End
1	6	Tournament Stulting Sports Day 2022				Tournament Stulting Sports Day 2022
		date 2022-08-26	rnd 1	type Rapid	result 1	date 2022-08-26	rnd 6	type Rapid	result 1
		Opponent Bredell, A (Alcapone)				Opponent Slabbert, S (Sophia)
2	4	Tournament Holiday Fever 2025				Tournament Holiday Fever 2025
		date 2025-06-21	rnd 6	type Rapid	result 1	date 2025-06-21	rnd 9	type Rapid	result 1
		Opponent Stuurman, C (Caydee)				Opponent Nhanha, S (Sinakekele)
3	3	Tournament SBD Invitational 2025				Tournament SBD Invitational 2025
		date 2025-08-23	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 6	type Rapid	result 1
		Opponent Rudolph, K (Kevin-Clark)				Opponent Coetzee, I (Izael)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Stulting Sports Day 2022				Tournament Stulting Sports Day 2022
		date 2022-08-26	rnd 1	type Rapid	result 1	date 2022-08-26	rnd 6	type Rapid	result 1
		Opponent Bredell, A (Alcapone)				Opponent Slabbert, S (Sophia)
2	5	Tournament Kouga Mayor's Cup 2025				Tournament SBDCU Trial 6 2025
		date 2025-03-08	rnd 5	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent O'Connel, C (Christhian Trenley)				Opponent Tadese, E (Eldana)
3	3	Tournament SBD Invitational 2025				Tournament SBD Invitational 2025
		date 2025-08-23	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 6	type Rapid	result 1
		Opponent Rudolph, K (Kevin-Clark)				Opponent Coetzee, I (Izael)

#	Games	Start				End
1	5	Tournament Kouga Mayor's Cup 2025				Tournament SBDCU Trial 6 2025
		date 2025-03-08	rnd 5	type Standard	result 1	date 2025-03-15	rnd 3	type Standard	result 1
		Opponent O'Connel, C (Christhian Trenley)				Opponent Tadese, E (Eldana)
2	3	Tournament Fountains Mall SBD Open 2025				Tournament Fountains Mall SBD Open 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-17	rnd 5	type Standard	result 1
		Opponent Booisen, M (Mia Faith)				Opponent Leen, A (Angelo)
3	3	Tournament SBDCU Trials 3 2025				Tournament SBDCU Trials 3 2025
		date 2025-02-08	rnd 2	type Standard	result 1	date 2025-02-08	rnd 4	type Standard	result 1
		Opponent Potberg, H (Hyrone)				Opponent Le Grange, T (Tailyn)

#	Games	Start				End
1	6	Tournament Stulting Sports Day 2022				Tournament Stulting Sports Day 2022
		date 2022-08-26	rnd 1	type Rapid	result 1	date 2022-08-26	rnd 6	type Rapid	result 1
		Opponent Bredell, A (Alcapone)				Opponent Slabbert, S (Sophia)
2	3	Tournament SBD Invitational 2025				Tournament SBD Invitational 2025
		date 2025-08-23	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 6	type Rapid	result 1
		Opponent Rudolph, K (Kevin-Clark)				Opponent Coetzee, I (Izael)
3	3	Tournament Humansdorp CMC Schools Trials 2024				Tournament Humansdorp CMC Schools Trials 2024
		date 2024-05-10	rnd 3	type Rapid	result 1	date 2024-05-10	rnd 5	type Rapid	result 1
		Opponent Goeda, C (Collin)				Opponent Geldenhuys, M (Marcell)

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	Ludick ,AC (Anaya Cassidy)	7	1	-303.6	4	1	-212.5	3	0	-425	0	0	0
1	Ludick ,AC (Anaya Cassidy)	7	1522.6	1219	4	1482.7	1310.1	3	1510.9	1097.6	0	0	0
2	Nhanha ,S (Sinakekele)	6	5	283.3	2	1	0	4	4	425	0	0	0
2	Nhanha ,S (Sinakekele)	6	1313.8	1597.1	2	1211.3	1313.8	4	1231.4	1738.8	0	0	0
3	Wang ,C (Chen)	5	2.5	0	4	2	0	1	0.5	0	0	0	0
3	Wang ,C (Chen)	5	1350.4	1350.4	4	1337.7	1350.4	1	1253.7	1350.4	0	0	0
4	Stantcheva ,D (Damon)	4	1	-212.5	3	0	-425	1	1	425	0	0	0
4	Stantcheva ,D (Damon)	4	1391.4	1178.9	3	1358.1	966.4	1	1226.2	1816.4	0	0	0
5	Rudolph ,K (Kevin-Clark)	4	2.5	106.2	0	0	0	4	2.5	106.2	0	0	0
5	Rudolph ,K (Kevin-Clark)	4	1330.7	1436.9	0	0	0	4	1228.7	1436.9	0	0	0
6	Claassen ,E (Enrique)	3	0	-425	3	0	-425	0	0	0	0	0	0
6	Claassen ,E (Enrique)	3	1668.9	1243.9	3	1664.4	1243.9	0	0	0	0	0	0
7	Fleurs ,E (Eli)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
7	Fleurs ,E (Eli)	3	1476.6	1334.9	3	1475.9	1334.9	0	0	0	0	0	0
8	Kammies ,A (Arno)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
8	Kammies ,A (Arno)	3	1478.7	1337	3	1454.7	1337	0	0	0	0	0	0
9	Twazi ,E (Enzokuhle)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
9	Twazi ,E (Enzokuhle)	3	1171.2	1312.9	3	1191.5	1312.9	0	0	0	0	0	0
10	Charlie ,S (Sinovuyo)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
10	Charlie ,S (Sinovuyo)	3	1344.9	1203.2	3	1354.8	1203.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Stolz, J (Justin)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms