Chess South Africa Ratings Database

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Personal

Vermeulen, T (Tiaan Leon)

Chess SA id

109083432

FIDE id

Date of birth

2009-07-04 (U18)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

32.9

Junior GPX Points

1351.7

Item	Main	Standard	Rapid	Blitz
Rating	1448.2	1450.7	777.6	500
Raw rating	1448.2	1450.7	777.6	500
Weighted rating	1438.8	1438.9	746.7	500
Weighted performance	1411.9	1407	0	0
Floor	1017.8	1016.5	500	500
K-factor	32	32	40	40
Min/Max rating change allowed	116.4	116	302.7	449.5
Highest rating	1534.4 2024-05-01	1533.2 2024-05-01	1241 2022-04-01	1200 2024-02-01
Highest raw rating	1517.8 2024-06-01	1516.5 2024-06-01	777.6 2024-11-01	500 2024-02-01
Highest weighted rating	1436 2025-09-01	1435.8 2025-09-01	777.6 2024-11-01	500 2024-11-01
Highest weighted performance	1534.4 2024-05-01	1533.2 2024-05-01	1241 2022-04-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1448.2	1450.7	777.6	500
Analysis
Rating	1448.2	1450.7	777.6	500
Raw rating	1448.2	1450.7	777.6	500
Weighted rating	1438.8	1438.9	746.7
Weighted performance	1411.9	1407	0
K-factor	32	32	40	40
Floor	1017.8	1016.5	500	500
Max/Min rating change allowed	116.4	116	302.7	449.5
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	1448.2	1450.7	777.6	500
New weighted rating	1440.9	1441.4	751.5	500
New weighted performance	1411.4	1406.5	0	0
Temp new rating	1448.2	1450.7	777.6	500
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1448.2	1450.7	777.6	500
New K-factor	32	32	40	40
New floor	1017.8	1016.5	500	500

Item	Main	Standard	Rapid
	0	0	0
	25	25	0
	49	44	5
	27	27	0
	27	20	7
	5	5	0
History	246	234	12

Games since
	Main 74	Standard 69		Rapid 5		Blitz 0
Gender	Male
Age group	U18
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	1671		577		210
Male	1409		472		166
U18	271		96		42
U18 Male	235		79		34
Standard
	RSA		Province		Region
Overall	1560		574		215
Male	1305		469		172
U18	257		103		43
U18 Male	223		86		36
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
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	25	13.5	54	34	1427.4	1461.4
Standard	25	13.5	54	34	1427.4	1461.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	212	111.5	52.59	22.1	1229.3	1251.3
Standard	200	104.5	52.25	19.1	1230.4	1249.6
Rapid	12	7	58.33	70.8	1210.1	1280.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1448.2	1450.7	777.6	500
2025-09-01	1448.2	1450.7	777.6	500
2025-08-01	1447.3	1449.7	777.6	500
2025-07-01	1447.3	1449.7	777.6	500
2025-06-01	1424	1422.4	777.6	500
2025-05-01	1421.2	1419.3	777.6	500
2025-04-01	1418.3	1416.2	777.6	500
2025-03-01	1414.7	1412.4	777.6	500
2025-02-01	1412.1	1418.4	777.6	500
2025-01-01	1402.4	1408.1	777.6	500
2024-12-01	1449.6	1455.5	777.6	500
2024-11-01	1449.6	1455.5	777.6	500
2024-10-01	1463.3	1455.5	658.8	500
2024-09-01	1485	1478.9	658.8	500
2024-08-01	1504.9	1502.6	658.8	500
2024-07-01	1504.9	1502.6	658.8	500
2024-06-01	1517.8	1516.5	658.8	500
2024-08-01	1432.8	1429.2	658.8	500
2024-04-01	1432.8	1429.2	658.8	500
2024-03-01	1432.8	1429.2	658.8	500
2024-02-01	1387.4	1379.2	658.8	500
2024-01-01	1256	1245.7	658.8	500
2023-12-01	1256	1245.7	658.8	500
2023-11-01	1256	1245.7	658.8	500

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	2025 Tshwane South School District CLOSED League Championship (U17A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	2025 Jacaranda Round Robin Open Chess Tournament (F)	2025-06-21	2025-06-21	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
3	Lubowski Open 2025 (C)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
4	Grey College Team Championship 2025 (A)	2025-02-21	2025-02-22	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
5	2025 Tshwane Chess OPEN Registration Tournament (A1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Tshwane South School District CLOSED League Championship (U17A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	2025 Jacaranda Round Robin Open Chess Tournament (F)	2025-06-21	2025-06-21	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
3	Lubowski Open 2025 (C)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
4	Grey College Team Championship 2025 (A)	2025-02-21	2025-02-22	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
5	2025 Tshwane Chess OPEN Registration Tournament (A1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
6	Gauteng Inter-Region at UJ 2024 (U16 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	0	Yes	Analysis
7	Gauteng Top Schools 2024 (U17 Open)	2024-10-05	2024-10-05	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
8	2024 Etienne Lewis (U16)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	7	3.5	Yes	Analysis
9	D4 Tshwane South District Schools Teams Chess Tournament 2024 (U17A)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
10	2024 Elise Steenkamp Open Chess Tournament (Kings)	2024-06-15	2024-06-17	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
11	2024 Mid Gauteng Open Chess Tournament (U16)	2024-05-02	2024-05-02	Standard	Tshwane (GTP)	5	5	5	Yes	Analysis
12	2024 Tshwane Chess AHS Open Chess Tournament (C1)	2024-02-24	2024-02-24	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	2024 Tshwane Chess OPEN Registration Tournament (C2)	2024-01-27	2024-01-27	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
14	2024 Gauteng Inter-Region Chess Championship (U16C)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
15	2023 Alekhine Open Tournament (C)	2023-09-09	2023-09-09	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
16	2023 Etienne Lewis Closed Tournament (U16)	2023-08-25	2023-08-27	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
17	Chris Greyling Open Tournament 2023 (BC)	2023-03-21	2023-03-21	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
18	2023 Afrikaans Ho�r Seunskool Open Chess Tournament (C)	2023-03-04	2023-03-04	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
19	2023 Tshwane Chess Open Registration Tournament (C1)	2023-01-28	2023-01-28	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
20	D4 Play Offs 2022 (U13)	2022-07-30	2022-07-30	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
21	2022 Mid Gauteng Open (C)	2022-05-07	2022-05-07	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
22	D4 Individuals 2022 (U13 Open)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	7	4	Yes	Analysis
23	2022 Lubowski Open Tournament (C)	2022-04-09	2022-04-10	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
24	2022 Tshwane Chess Open Registration Tournament (C2)	2022-01-29	2022-01-29	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
25	2021 Lardies Ope (C)	2021-10-30	2021-10-30	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
26	2020 Waterkloof Open (C)	2020-02-29	2020-03-01	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
27	2020 Registration Tournament (C)	2020-01-25	2020-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
28	2019 South African Junior Team Championships (U12E)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	2.5	Yes	Analysis
29	2019 Etienne Lewis Trials (U12 Boys)	2019-08-30	2019-09-01	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
30	2019 Gauteng School League Finals (U11 Open)	2019-08-23	2019-08-23	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
31	2019 Alekhine Open (D)	2019-08-09	2019-08-10	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
32	2019 D4 Tshwane South Schools League Team Finals (U11)	2019-07-27	2019-07-27	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
33	2019 Lubowski Open Tournament (D)	2019-05-11	2019-05-12	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
34	2019 Chris Greyling (D)	2019-04-27	2019-04-27	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
35	2019 D4 Individual Finals (U11 Mixed)	2019-03-09	2019-03-09	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
36	2018 D4 Tshwane South Schools League Finals (U9)	2018-08-03	2018-08-03	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
37	2018 Chris Greyling Open (D)	2018-04-21	2018-04-21	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
38	2018 Capablanca Swiss (D)	2018-04-27	2018-04-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
39	2018 D4 Tshwane North Individual Chess Championships (U9 Boys)	2018-03-10	2018-03-10	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
40	South African Junior Team Championships 2017 (U10C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	6	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-13	rnd 2	type Standard	result 1	date 2024-01-27	rnd 2	type Standard	result 1
		Opponent Van Der Merwe, AP (Altus Philip)				Opponent Naude, J (Johan)
2	5	Tournament 2024 Mid Gauteng Open Chess Tournament				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2024-05-02	rnd 1	type Standard	result 1	date 2024-05-02	rnd 5	type Standard	result 1
		Opponent Marais, JS (Jacobus)				Opponent Sadalla, J (Johnny)
3	5	Tournament D4 Play Offs 2022				Tournament 2023 Tshwane Chess Open Registration Tournament
		date 2022-07-30	rnd 4	type Standard	result 0.5	date 2023-01-28	rnd 3	type Standard	result 1
		Opponent Marais, JS (Jacobus)				Opponent Matthyser, J (Jason)

#	Games	Start				End
1	6	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-13	rnd 2	type Standard	result 1	date 2024-01-27	rnd 2	type Standard	result 1
		Opponent Van Der Merwe, AP (Altus Philip)				Opponent Naude, J (Johan)
2	5	Tournament 2024 Mid Gauteng Open Chess Tournament				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2024-05-02	rnd 1	type Standard	result 1	date 2024-05-02	rnd 5	type Standard	result 1
		Opponent Marais, JS (Jacobus)				Opponent Sadalla, J (Johnny)
3	5	Tournament D4 Play Offs 2022				Tournament 2023 Tshwane Chess Open Registration Tournament
		date 2022-07-30	rnd 4	type Standard	result 0.5	date 2023-01-28	rnd 3	type Standard	result 1
		Opponent Marais, JS (Jacobus)				Opponent Matthyser, J (Jason)

#	Games	Start				End
1	2	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 1	type Rapid	result 1	date 2024-10-05	rnd 2	type Rapid	result 1
		Opponent Khalushi, L (Lebohang)				Opponent Mvuama, J (Jonathan)
2	2	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 1	type Rapid	result 1	date 2022-04-23	rnd 2	type Rapid	result 1
		Opponent Botha, J (Jayden)				Opponent Van Baalen, J (Jakobus Michael)
3	1	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 4	type Rapid	result 1	date 2024-10-05	rnd 4	type Rapid	result 1
		Opponent Chamo, M (Mpho)				Opponent Chamo, M (Mpho)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-13	rnd 2	type Standard	result 1	date 2024-01-27	rnd 2	type Standard	result 1
		Opponent Van Der Merwe, AP (Altus Philip)				Opponent Naude, J (Johan)
2	5	Tournament 2024 Mid Gauteng Open Chess Tournament				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2024-05-02	rnd 1	type Standard	result 1	date 2024-05-02	rnd 5	type Standard	result 1
		Opponent Marais, JS (Jacobus)				Opponent Sadalla, J (Johnny)
3	4	Tournament 2025 Jacaranda Round Robin Open Chess Tournament				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-06-21	rnd 4	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Marais, L (Luke)				Opponent Deetlefs, Q (Quinn)

#	Games	Start				End
1	6	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-13	rnd 2	type Standard	result 1	date 2024-01-27	rnd 2	type Standard	result 1
		Opponent Van Der Merwe, AP (Altus Philip)				Opponent Naude, J (Johan)
2	5	Tournament 2024 Mid Gauteng Open Chess Tournament				Tournament 2024 Mid Gauteng Open Chess Tournament
		date 2024-05-02	rnd 1	type Standard	result 1	date 2024-05-02	rnd 5	type Standard	result 1
		Opponent Marais, JS (Jacobus)				Opponent Sadalla, J (Johnny)
3	4	Tournament 2025 Jacaranda Round Robin Open Chess Tournament				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-06-21	rnd 4	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Marais, L (Luke)				Opponent Deetlefs, Q (Quinn)

#	Games	Start				End
1	2	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 1	type Rapid	result 1	date 2024-10-05	rnd 2	type Rapid	result 1
		Opponent Khalushi, L (Lebohang)				Opponent Mvuama, J (Jonathan)
2	2	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 1	type Rapid	result 1	date 2022-04-23	rnd 2	type Rapid	result 1
		Opponent Botha, J (Jayden)				Opponent Van Baalen, J (Jakobus Michael)
3	1	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 4	type Rapid	result 1	date 2024-10-05	rnd 4	type Rapid	result 1
		Opponent Chamo, M (Mpho)				Opponent Chamo, M (Mpho)

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	Radia ,D (Diya)	4	0	-425	4	0	-425	0	0	0	0	0	0
1	Radia ,D (Diya)	4	1287.3	862.3	4	1281.2	862.3	0	0	0	0	0	0
2	Jooste ,J (Josh)	4	1	-212.5	3	1	-141.7	1	0	-425	0	0	0
2	Jooste ,J (Josh)	4	1332.3	1119.8	3	1315.6	1190.7	1	1258.4	907.3	0	0	0
3	Olivier ,BM (Barnard Markus)	3	3	425	3	3	425	0	0	0	0	0	0
3	Olivier ,BM (Barnard Markus)	3	1133.9	1558.9	3	1108.8	1558.9	0	0	0	0	0	0
4	Louw ,N (Nova)	3	3	425	3	3	425	0	0	0	0	0	0
4	Louw ,N (Nova)	3	1381.3	1806.3	3	1373	1806.3	0	0	0	0	0	0
5	Marais ,JS (Jacobus Stephanus)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
5	Marais ,JS (Jacobus Stephanus)	3	1171.8	1455.1	3	1159	1455.1	0	0	0	0	0	0
6	Seitei ,N (Neo)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
6	Seitei ,N (Neo)	3	1296.4	1438.1	3	1287.7	1438.1	0	0	0	0	0	0
7	Lodi ,O (Olebogeng)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
7	Lodi ,O (Olebogeng)	3	1351.9	1068.5	3	1341.8	1068.5	0	0	0	0	0	0
8	Van Deventer ,NS (Nathaniel Steven)	2	1	0	2	1	0	0	0	0	0	0	0
8	Van Deventer ,NS (Nathaniel Steven)	2	1256.5	1256.5	2	1246.2	1256.5	0	0	0	0	0	0
9	Nel ,A (Armand)	2	1	0	2	1	0	0	0	0	0	0	0
9	Nel ,A (Armand)	2	1286.4	1286.4	2	1270.2	1286.4	0	0	0	0	0	0
10	Okeke ,BC (Brian Chiagozie)	2	2	425	2	2	425	0	0	0	0	0	0
10	Okeke ,BC (Brian Chiagozie)	2	1186.9	1611.9	2	1174.7	1611.9	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

Vermeulen, T (Tiaan Leon)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms