Chess South Africa Ratings Database

PLAYER PAGE

Personal

Mclachlan, G (Geoffrey)

Chess SA id

1120154747

FIDE id

Date of birth

2012-09-07 (U14)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-04

Personal details last changed

1900-01-01

Junior GPX Games

81.7

Junior GPX Points

1478.9

Item	Main	Standard	Rapid	Blitz
Rating	1628.6	1639.6	1282.3	1200
Raw rating	1628.6	1639.6	1267.1	1200
Weighted rating	1548.2	1555.4	1282.3	1200
Weighted performance	1545.8	1595	0	0
Floor	1137.5	1139.6	800.5	700
K-factor	28	28	36	36
Min/Max rating change allowed	90	88.6	150.7	165.8
Highest rating	1637.5 2025-09-30	1639.6 2025-09-30	1447.7 2024-06-01	1200 2018-10-01
Highest raw rating	1637.5 2025-09-30	1639.6 2025-09-30	1300.5 2025-02-01	1200 2024-02-01
Highest weighted rating	1548.2 2025-11-01	1542.7 2025-09-30	1282.3 2025-11-01	1200 2018-10-01
Highest weighted performance	1615.1 2025-09-01	1618.7 2025-09-01	1447.7 2024-06-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0.3	0
New rating	1628.6	1639.6	1282.5	1200
Analysis
Rating	1628.6	1639.6	1282.3	1200
Raw rating	1628.6	1639.6	1267.1	1200
Weighted rating	1548.2	1555.4	1282.3
Weighted performance	1545.8	1595	0
K-factor	28	28	36	36
Floor	1137.5	1139.6	800.5	700
Max/Min rating change allowed	90	88.6	150.7	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	1628.6	1639.6	1267.1	1200
New weighted rating	1559.4	1566.8	1282.5	1200
New weighted performance	1536.6	1585.3	0	0
Temp new rating	1628.6	1639.6	1282.5	1200
Temp new rating +/-	0	0	0.3	0
Final new rating +/-	0	0	0.3	0
New rating	1628.6	1639.6	1282.5	1200
New K-factor	28	28	36	36
New floor	1137.5	1139.6	800.5	700

Item	Main	Standard	Rapid
	0	0	0
	83	71	12
	90	76	14
	25	25	0
	0	0	0
	0	0	0
History	198	172	26

Games since
	Main 173	Standard 147		Rapid 26		Blitz 0
Gender	Male
Age group	U14
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	528		52		24
Male	488		48		21
U14	50		11		6
U14 Male	45		10		5
Standard
	RSA		Province		Region
Overall	476		48		20
Male	437		45		18
U14	44		10		5
U14 Male	41		10		5
Rapid
	RSA		Province		Region
Overall	1164		97		27
Male	944		81		24
U14	263		22		3
U14 Male	190		18		3
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	83	57	68.67	158.7	1425.9	1584.7
Standard	71	51	71.83	185.6	1417.9	1603.4
Rapid	12	6	50	0	1473.5	1473.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	198	129.5	65.4	130.9	1367.2	1498.2
Standard	172	115	66.86	143.3	1360.3	1503.6
Rapid	26	14.5	55.77	49	1413.1	1462.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1628.6	1639.6	1267.1	1200
2025-09-30	1637.5	1639.6	1300.5	1200
2025-09-01	1636.7	1639.3	1300.5	1200
2025-08-01	1601.7	1601.5	1300.5	1200
2025-07-01	1601.7	1601.5	1300.5	1200
2025-06-01	1611.6	1614.5	1300.5	1200
2025-05-01	1526.6	1532.7	1300.5	1200
2025-04-01	1498.6	1501.5	1300.5	1200
2025-03-01	1559.7	1576	1300.5	1200
2025-02-01	1518.6	1536.5	1300.5	1200
2025-01-01	1533.3	1536.5	1270.2	1200
2024-12-01	1529.5	1537.1	1270.2	1200
2024-11-01	1529.5	1537.1	1270.2	1200
2024-10-01	1529.5	1537.1	1270.2	1200
2024-09-01	1481	1495.8	1270.2	1200
2024-08-01	1483.8	1518.8	1270.2	1200
2024-07-01	1437.9	1432.4	1286.8	1200
2024-09-01	1415.5	1432.4	1226.3	1200
2024-05-01	1418.2	1436.6	1226.3	1200
2024-04-01	1406.1	1415	1200	1200
2024-03-01	1389.1	1395.5	1200	1200
2024-02-01	1254.6	1256.9	1200	1200
2024-01-01	1254.6	1256.9	1200	1200
2023-12-01	1254.6	1256.9	1200	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	Fide in the Bay 2025 (A)	2025-10-04	2025-10-04	Rapid	Nelson Mandela Bay (ENM)	7	7	3	Yes	Analysis
2	EC Closed 2025 (U14 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
3	UCC Championship 2025 (B)	2025-07-22	2025-08-19	Standard	Nelson Mandela Bay (ENM)	5	2	2	Yes	Analysis
4	UCC Mind Over Board 2025 (B)	2025-08-01	2025-08-03	Standard	Nelson Mandela Bay (ENM)	5	5	5	Yes	Analysis
5	NMBCU Closed 2025 (U14)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
6	NMBCU Open 2025 (B)	2025-05-23	2025-05-24	Standard	Nelson Mandela Bay (ENM)	6	5	3.5	Yes	Analysis
7	NMBCU Trial 4 2025 (U14)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
8	UCC Presidential Cup 2025 (B)	2025-04-08	2025-05-06	Standard	Nelson Mandela Bay (ENM)	5	1	1	Yes	Analysis
9	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	6	Yes	Analysis
10	Karen Ashworth 2025 (A)	2025-04-26	2025-04-26	Standard	Nelson Mandela Bay (ENM)	5	4	1	Yes	Analysis
11	NMB 3rd Trials 2025 (U14)	2025-04-11	2025-04-12	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
12	Rhodes Open 2025 (B)	2025-03-21	2025-03-22	Standard	Sarah Baartman (ESB)	7	6	3.5	Yes	Analysis
13	NMB 2nd Trials 2025 (U14)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
14	Pearson High Chess Festival 2025 (C)	2025-02-21	2025-02-22	Standard	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
15	NMBCH Trial 1 2025 (U14)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
16	SBD Activation Tournament 2025 (Open)	2025-01-04	2025-01-04	Rapid	Sarah Baartman (ESB)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Fide in the Bay 2025 (A)	2025-10-04	2025-10-04	Rapid	Nelson Mandela Bay (ENM)	7	7	3	Yes	Analysis
2	EC Closed 2025 (U14 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
3	UCC Championship 2025 (B)	2025-07-22	2025-08-19	Standard	Nelson Mandela Bay (ENM)	5	2	2	Yes	Analysis
4	UCC Mind Over Board 2025 (B)	2025-08-01	2025-08-03	Standard	Nelson Mandela Bay (ENM)	5	5	5	Yes	Analysis
5	NMBCU Closed 2025 (U14)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
6	NMBCU Open 2025 (B)	2025-05-23	2025-05-24	Standard	Nelson Mandela Bay (ENM)	6	5	3.5	Yes	Analysis
7	NMBCU Trial 4 2025 (U14)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
8	UCC Presidential Cup 2025 (B)	2025-04-08	2025-05-06	Standard	Nelson Mandela Bay (ENM)	5	1	1	Yes	Analysis
9	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	6	Yes	Analysis
10	Karen Ashworth 2025 (A)	2025-04-26	2025-04-26	Standard	Nelson Mandela Bay (ENM)	5	4	1	Yes	Analysis
11	NMB 3rd Trials 2025 (U14)	2025-04-11	2025-04-12	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
12	Rhodes Open 2025 (B)	2025-03-21	2025-03-22	Standard	Sarah Baartman (ESB)	7	6	3.5	Yes	Analysis
13	NMB 2nd Trials 2025 (U14)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
14	Pearson High Chess Festival 2025 (C)	2025-02-21	2025-02-22	Standard	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
15	NMBCH Trial 1 2025 (U14)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
16	SBD Activation Tournament 2025 (Open)	2025-01-04	2025-01-04	Rapid	Sarah Baartman (ESB)	5	5	3	Yes	Analysis
17	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	3.5	Yes	Analysis
18	NMBCU Club League 2024 (B)	2024-07-28	2024-09-15	Standard	Nelson Mandela Bay (ENM)	5	2	2	Yes	Analysis
19	NMBCU Closed 2024 (U14)	2024-09-20	2024-09-21	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
20	2024 UCC Mind Over Board (B)	2024-08-30	2024-09-01	Standard	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
21	NMBCU Trial 5 2024 (U14)	2024-08-16	2024-08-17	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
22	NMB Open 2024 (B)	2024-08-03	2024-08-04	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
23	Karen Ashworth 2024 (B)	2024-07-19	2024-07-20	Standard	Nelson Mandela Bay (ENM)	6	6	5.5	Yes	Analysis
24	NMBCU Trials 4 2024 (U14)	2024-07-12	2024-07-13	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
25	Uitenhage Chess Club Rapid June 2024	2024-06-18	2024-07-02	Rapid	Nelson Mandela Bay (ENM)	6	5	2	Yes	Analysis
26	Willow Academy 2024 (B)	2024-06-22	2024-06-22	Rapid	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
27	NMBCU Trial 3 2024 (U14)	2024-05-10	2024-05-11	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
28	NMBCU Trials 2 2024 (U14)	2024-04-12	2024-04-13	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
29	UCC Blitz Tournamen March 2024	2024-03-26	2024-04-02	Rapid	Nelson Mandela Bay (ENM)	6	3	2	Yes	Analysis
30	UCC Strategic Moves 2024 (B)	2024-03-08	2024-03-09	Standard	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
31	Madibaz Chess Tournament 2024 (B)	2024-03-01	2024-03-02	Standard	Nelson Mandela Bay (ENM)	5	4	2	Yes	Analysis
32	NMBCU Trials 1 2024 (U14)	2024-02-16	2024-02-16	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
33	Pearson Open Chess Tournament 2024 (C)	2024-02-23	2024-02-24	Standard	Nelson Mandela Bay (ENM)	5	5	4.5	Yes	Analysis
34	PECC Club Championship 2023 (Junior)	2023-10-12	2023-11-23	Standard	Nelson Mandela Bay (ENM)	6	4	2	Yes	Analysis
35	2023 Tshwane North School District CLOSED League Championships (D3)	2023-08-12	2023-08-12	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
36	NMBCU Trial 4 2023 (U12)	2023-07-28	2023-07-29	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
37	2023 Tshwane North School District CLOSED Individual Championships (D3)	2023-05-13	2023-05-13	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
38	EP Trials 3 2023 (U12)	2023-05-05	2023-05-06	Standard	Nelson Mandela Bay (ENM)	6	5	1	Yes	Analysis

#	Games	Start				End
1	16	Tournament NMBCU Trials 4 2024				Tournament NMB Open 2024
		date 2024-07-12	rnd 1	type Standard	result 0.5	date 2024-08-03	rnd 4	type Standard	result 0.5
		Opponent Heneke, R (Ruan)				Opponent Ackerdien, S (Saud)
2	11	Tournament NMBCU Closed 2025				Tournament EC Closed 2025
		date 2025-06-14	rnd 5	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Sonti, K (Khwezi)				Opponent Stantcheva, D (Damon)
3	11	Tournament SBD Activation Tournament 2025				Tournament Pearson High Chess Festival 2025
		date 2025-01-04	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 4	type Standard	result 1
		Opponent Diamond, L (Lisakhanya)				Opponent George, P (Panashe)

#	Games	Start				End
1	19	Tournament NMBCU Trial 3 2024				Tournament NMB Open 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 0.5
		Opponent Van Greunen, M (Melaney)				Opponent Ackerdien, S (Saud)
2	11	Tournament NMBCU Closed 2025				Tournament EC Closed 2025
		date 2025-06-14	rnd 5	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Sonti, K (Khwezi)				Opponent Stantcheva, D (Damon)
3	10	Tournament NMBCH Trial 1 2025				Tournament Pearson High Chess Festival 2025
		date 2025-02-14	rnd 1	type Standard	result 1	date 2025-02-22	rnd 4	type Standard	result 1
		Opponent Swartz, J (Jane)				Opponent George, P (Panashe)

#	Games	Start				End
1	5	Tournament UCC Blitz Tournamen March 2024				Tournament Willow Academy 2024
		date 2024-03-26	rnd 2	type Rapid	result 1	date 2024-06-22	rnd 2	type Rapid	result 1
		Opponent Adams, J (Jessica)				Opponent Mangala, S (Sibonelo)
2	3	Tournament Willow Academy 2024				Tournament Willow Academy 2024
		date 2024-06-22	rnd 4	type Rapid	result 0.5	date 2024-06-22	rnd 6	type Rapid	result 1
		Opponent Claassen, E (Enrique)				Opponent De Jager, J (Jaeden)
3	1	Tournament SBD Activation Tournament 2025				Tournament SBD Activation Tournament 2025
		date 2025-01-04	rnd 5	type Rapid	result 1	date 2025-01-04	rnd 5	type Rapid	result 1
		Opponent Diamond, L (Lisakhanya)				Opponent Diamond, L (Lisakhanya)

No games found.

#	Games	Start				End

#	Games	Start				End
1	9	Tournament UCC Mind Over Board 2025				Tournament EC Closed 2025
		date 2025-08-01	rnd 1	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Coetzer, H (Hanroux)				Opponent Stantcheva, D (Damon)
2	7	Tournament EC Open 2025				Tournament NMBCU Trial 4 2025
		date 2025-05-02	rnd 5	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Petzer, J (Jayden)				Opponent Kapp, S (Sebastian)
3	5	Tournament NMBCU Open 2025				Tournament NMBCU Closed 2025
		date 2025-05-24	rnd 4	type Standard	result 1	date 2025-06-14	rnd 2	type Standard	result 1
		Opponent Du Toit, H (Hayden)				Opponent Du Toit, H (Hayden)

#	Games	Start				End
1	9	Tournament UCC Mind Over Board 2025				Tournament EC Closed 2025
		date 2025-08-01	rnd 1	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Coetzer, H (Hanroux)				Opponent Stantcheva, D (Damon)
2	7	Tournament EC Open 2025				Tournament NMBCU Trial 4 2025
		date 2025-05-02	rnd 5	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Petzer, J (Jayden)				Opponent Kapp, S (Sebastian)
3	5	Tournament NMBCU Open 2025				Tournament NMBCU Closed 2025
		date 2025-05-24	rnd 4	type Standard	result 1	date 2025-06-14	rnd 2	type Standard	result 1
		Opponent Du Toit, H (Hayden)				Opponent Du Toit, H (Hayden)

#	Games	Start				End
1	5	Tournament UCC Blitz Tournamen March 2024				Tournament Willow Academy 2024
		date 2024-03-26	rnd 2	type Rapid	result 1	date 2024-06-22	rnd 2	type Rapid	result 1
		Opponent Adams, J (Jessica)				Opponent Mangala, S (Sibonelo)
2	2	Tournament Willow Academy 2024				Tournament Willow Academy 2024
		date 2024-06-22	rnd 5	type Rapid	result 1	date 2024-06-22	rnd 6	type Rapid	result 1
		Opponent Ranjith, A (Aishwarya)				Opponent De Jager, J (Jaeden)
3	1	Tournament SBD Activation Tournament 2025				Tournament SBD Activation Tournament 2025
		date 2025-01-04	rnd 5	type Rapid	result 1	date 2025-01-04	rnd 5	type Rapid	result 1
		Opponent Diamond, L (Lisakhanya)				Opponent Diamond, L (Lisakhanya)

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	Arries ,J (Jayde)	7	6.5	364.3	5	4.5	340	2	2	425	0	0	0
1	Arries ,J (Jayde)	7	1336.4	1700.7	5	1342.7	1676.4	2	1177.6	1761.4	0	0	0
2	Du Toit ,H (Hayden)	6	4	141.7	6	4	141.7	0	0	0	0	0	0
2	Du Toit ,H (Hayden)	6	1185.8	1327.4	6	1182.7	1327.4	0	0	0	0	0	0
3	Step ,N (Nicholas)	6	1.5	-212.5	5	1.5	-170	1	0	-425	0	0	0
3	Step ,N (Nicholas)	6	1633.9	1421.4	5	1610	1463.9	1	1200	1208.9	0	0	0
4	Murray ,C (Chloe)	5	5	425	4	4	425	1	1	425	0	0	0
4	Murray ,C (Chloe)	5	1338.1	1763.1	4	1300.7	1763.1	1	1219.7	1763.1	0	0	0
5	Mangala ,S (Sibonelo)	5	1	-255	3	0	-425	2	1	0	0	0	0
5	Mangala ,S (Sibonelo)	5	1560.6	1305.6	3	1559.3	1135.6	2	1299.4	1560.6	0	0	0
6	Sonti ,K (Khwezi)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
6	Sonti ,K (Khwezi)	4	1297.5	1510	4	1287.8	1510	0	0	0	0	0	0
7	Driscoll ,S (Samuel)	4	0	-425	4	0	-425	0	0	0	0	0	0
7	Driscoll ,S (Samuel)	4	1711.1	1286.1	4	1709.3	1286.1	0	0	0	0	0	0
8	Chipunza ,J (Jaden)	4	2	0	4	2	0	0	0	0	0	0	0
8	Chipunza ,J (Jaden)	4	1638.2	1638.2	4	1625.6	1638.2	0	0	0	0	0	0
9	Chipunza ,J (Jared)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
9	Chipunza ,J (Jared)	4	1587.3	1374.8	4	1594.8	1374.8	0	0	0	0	0	0
10	Grobler ,M (Mia)	4	4	425	4	4	425	0	0	0	0	0	0
10	Grobler ,M (Mia)	4	1305	1730	4	1304.7	1730	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Mclachlan, G (Geoffrey)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms