Chess South Africa Ratings Database

PLAYER PAGE

Personal

Mrwetyana, B (Bulumko Ayamkela)

Chess SA id

1090160695

FIDE id

Date of birth

2009-11-25 (U18)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-09-28

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1434.2	1409.5	1228.8	1200
Raw rating	1434.2	1409.5	1228.8	1200
Weighted rating	1416.9	1387.7	1226.6	1200
Weighted performance	1242.4	1211.8	0	0
Floor	934.2	909.5	728.8	700
K-factor	32	32	36	36
Min/Max rating change allowed	118.8	123	159.1	165.8
Highest rating	1434.2 2024-10-01	1409.5 2024-10-01	1305.1 2024-03-01	1200 2018-10-01
Highest raw rating	1434.2 2024-10-01	1409.5 2024-10-01	1228.8 2024-04-01	1200 2024-03-01
Highest weighted rating	1398.8 2025-08-01	1369.7 2025-08-01	1223.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1408.2 2024-05-01	1389.7 2024-05-01	1305.1 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1434.2	1409.5	1228.8	1200
Analysis
Rating	1434.2	1409.5	1228.8	1200
Raw rating	1434.2	1409.5	1228.8	1200
Weighted rating	1416.9	1387.7	1226.6
Weighted performance	1242.4	1211.8	0
K-factor	32	32	36	36
Floor	934.2	909.5	728.8	700
Max/Min rating change allowed	118.8	123	159.1	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	1434.2	1409.5	1228.8	1200
New weighted rating	1421.5	1392.5	1227.6	1200
New weighted performance	1233.8	1203.3	0	0
Temp new rating	1434.2	1409.5	1228.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1434.2	1409.5	1228.8	1200
New K-factor	32	32	36	36
New floor	934.2	909.5	728.8	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	29	19	10
	10	5	5
	0	0	0
	0	0	0
History	39	24	15

Games since
	Main 34	Standard 19		Rapid 15		Blitz 0
Gender	Male
Age group	U18
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
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	-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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	39	23	58.97	76.3	1322.2	1398.5
Standard	24	15.5	64.58	124	1305	1428.9
Rapid	15	7.5	50	0	1349.7	1349.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1434.2	1409.5	1228.8	1200
2025-09-30	1434.2	1409.5	1228.8	1200
2025-09-01	1434.2	1409.5	1228.8	1200
2025-08-01	1434.2	1409.5	1228.8	1200
2025-07-01	1434.2	1409.5	1228.8	1200
2025-06-01	1434.2	1409.5	1228.8	1200
2025-05-01	1434.2	1409.5	1228.8	1200
2025-04-01	1434.2	1409.5	1228.8	1200
2025-03-01	1434.2	1409.5	1228.8	1200
2025-02-01	1434.2	1409.5	1228.8	1200
2025-01-01	1434.2	1409.5	1228.8	1200
2024-12-01	1434.2	1409.5	1228.8	1200
2024-11-01	1434.2	1409.5	1228.8	1200
2024-10-01	1434.2	1409.5	1228.8	1200
2024-09-01	1420.4	1343.6	1228.8	1200
2024-08-01	1420.4	1343.6	1228.8	1200
2024-07-01	1359.9	1297.2	1228.8	1200
2024-09-01	1359.9	1297.2	1228.8	1200
2024-05-01	1294.9	1254.4	1228.8	1200
2024-04-01	1294.9	1254.4	1228.8	1200
2024-03-01	1219.9	1219.8	1186.7	1200
2024-02-01	1198.1	1219.8	1148.5	1200
2024-01-01	1198.1	1219.8	1148.5	1200
2023-12-01	1198.1	1219.8	1148.5	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	Knight Riders Spring Chess Tournament 2024 (C)	2024-09-28	2024-09-28	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
2	Chess Power House July Open 2024 (C)	2024-07-20	2024-07-20	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
3	Chess Power House June Open 2024 (C)	2024-06-23	2024-06-23	Standard	Ekurhuleni (GE)	5	0	0	No	Analysis
4	Chess Power House May Open 2024 (C)	2024-05-25	2024-05-25	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
5	CPH St Andrew's Rapid 2024 (B)	2024-03-30	2024-03-30	Rapid	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
6	JNW Open - Classic - Crawford 2024 (C)	2024-03-09	2024-03-09	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
7	Chess Power House 1st Rapid 2024 (B)	2024-02-24	2024-02-24	Rapid	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
8	Chess Power House Festive Rapid 2023 (High School)	2023-12-15	2023-12-15	Rapid	Johannesburg Metro (GJM)	6	5	1	Yes	Analysis
9	Chess Power House 2023 (C)	2023-08-19	2023-08-19	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament JNW Open - Classic - Crawford 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-09	rnd 3	type Standard	result 1	date 2024-03-30	rnd 3	type Rapid	result 0.5
		Opponent Mnguni, A (Aphile)				Opponent Jacobs, L (Lillith)
2	5	Tournament CPH St Andrew's Rapid 2024				Tournament Chess Power House May Open 2024
		date 2024-03-30	rnd 5	type Rapid	result 1	date 2024-05-25	rnd 4	type Standard	result 1
		Opponent Motau, N (Neelo)				Opponent Tierney, G (Grayson)
3	4	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House 1st Rapid 2024
		date 2023-12-15	rnd 6	type Rapid	result 1	date 2024-02-24	rnd 3	type Rapid	result 1
		Opponent Khumalo, K (Khensani)				Opponent Kalimashe, T (Tshireletso)

#	Games	Start				End
1	7	Tournament JNW Open - Classic - Crawford 2024				Tournament Chess Power House May Open 2024
		date 2024-03-09	rnd 3	type Standard	result 1	date 2024-05-25	rnd 4	type Standard	result 1
		Opponent Mnguni, A (Aphile)				Opponent Tierney, G (Grayson)
2	3	Tournament Chess Power House July Open 2024				Tournament Knight Riders Spring Chess Tournament 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-09-28	rnd 3	type Standard	result 1
		Opponent Ntombela, K (Khanya)				Opponent De Jager, Z (Zander)
3	3	Tournament Chess Power House July Open 2024				Tournament Chess Power House July Open 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 0.5
		Opponent Hunter-Smith, O (Olivia)				Opponent Hu-Grobbelaar, L (Lalu)

#	Games	Start				End
1	4	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House 1st Rapid 2024
		date 2023-12-15	rnd 6	type Rapid	result 1	date 2024-02-24	rnd 3	type Rapid	result 1
		Opponent Khumalo, K (Khensani)				Opponent Kalimashe, T (Tshireletso)
2	3	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 1	type Rapid	result 1	date 2024-03-30	rnd 3	type Rapid	result 0.5
		Opponent Mann, I (Iowan)				Opponent Jacobs, L (Lillith)
3	1	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 5	type Rapid	result 1	date 2024-03-30	rnd 5	type Rapid	result 1
		Opponent Motau, N (Neelo)				Opponent Motau, N (Neelo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House 1st Rapid 2024
		date 2023-12-15	rnd 6	type Rapid	result 1	date 2024-02-24	rnd 3	type Rapid	result 1
		Opponent Khumalo, K (Khensani)				Opponent Kalimashe, T (Tshireletso)
2	3	Tournament Chess Power House July Open 2024				Tournament Knight Riders Spring Chess Tournament 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-09-28	rnd 3	type Standard	result 1
		Opponent Ntombela, K (Khanya)				Opponent De Jager, Z (Zander)
3	3	Tournament CPH St Andrew's Rapid 2024				Tournament Chess Power House May Open 2024
		date 2024-03-30	rnd 5	type Rapid	result 1	date 2024-05-25	rnd 2	type Standard	result 1
		Opponent Motau, N (Neelo)				Opponent Mankena, S (Satvik Ram)

#	Games	Start				End
1	3	Tournament Chess Power House July Open 2024				Tournament Knight Riders Spring Chess Tournament 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-09-28	rnd 3	type Standard	result 1
		Opponent Ntombela, K (Khanya)				Opponent De Jager, Z (Zander)
2	2	Tournament Chess Power House July Open 2024				Tournament Chess Power House July Open 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 2	type Standard	result 1
		Opponent Hunter-Smith, O (Olivia)				Opponent Exarchos, I (Isabella)
3	2	Tournament Chess Power House May Open 2024				Tournament Chess Power House May Open 2024
		date 2024-05-25	rnd 1	type Standard	result 1	date 2024-05-25	rnd 2	type Standard	result 1
		Opponent Chikwava, R (Ronald)				Opponent Mankena, S (Satvik Ram)

#	Games	Start				End
1	4	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House 1st Rapid 2024
		date 2023-12-15	rnd 6	type Rapid	result 1	date 2024-02-24	rnd 3	type Rapid	result 1
		Opponent Khumalo, K (Khensani)				Opponent Kalimashe, T (Tshireletso)
2	2	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 1	type Rapid	result 1	date 2024-03-30	rnd 2	type Rapid	result 1
		Opponent Mann, I (Iowan)				Opponent Gadney, L (Liam)
3	1	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 5	type Rapid	result 1	date 2024-03-30	rnd 5	type Rapid	result 1
		Opponent Motau, N (Neelo)				Opponent Motau, N (Neelo)

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	Mallach ,D (Daniel)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Mallach ,D (Daniel)	2	1388.4	963.4	1	1302.6	963.4	1	1353.3	963.4	0	0	0
2	Kalimashe ,T (Tshireletso)	2	1	0	1	0	-425	1	1	425	0	0	0
2	Kalimashe ,T (Tshireletso)	2	1554.2	1554.2	1	1563.8	1129.2	1	1379.3	1979.2	0	0	0
3	Chikwava ,R (Ronald)	1	1	425	1	1	425	0	0	0	0	0	0
3	Chikwava ,R (Ronald)	1	967.7	1392.7	1	929.6	1392.7	0	0	0	0	0	0
4	Exarchos ,I (Isabella)	1	1	425	1	1	425	0	0	0	0	0	0
4	Exarchos ,I (Isabella)	1	1485.8	1910.8	1	1485.3	1910.8	0	0	0	0	0	0
5	Ntombela ,K (Khanya)	1	1	425	1	1	425	0	0	0	0	0	0
5	Ntombela ,K (Khanya)	1	1317.7	1742.7	1	1316.1	1742.7	0	0	0	0	0	0
6	Mosala ,A (Atlehang)	1	1	425	1	1	425	0	0	0	0	0	0
6	Mosala ,A (Atlehang)	1	1190.6	1615.6	1	1192.8	1615.6	0	0	0	0	0	0
7	Slabbert ,ZN (Zander Nicolaas)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Slabbert ,ZN (Zander Nicolaas)	1	1550.1	1125.1	1	1550.3	1125.1	0	0	0	0	0	0
8	Waring ,C (Caydence)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Waring ,C (Caydence)	1	1331.8	906.8	1	1357.9	906.8	0	0	0	0	0	0
9	Papanicolaou ,M (Mila)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Papanicolaou ,M (Mila)	1	1421.7	1421.7	1	1392	1421.7	0	0	0	0	0	0
10	Nemusombori ,LN (Livhuwani Nathan)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Nemusombori ,LN (Livhuwani Nathan)	1	1246	821	1	1270.2	821	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Mrwetyana, B (Bulumko Ayamkela)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms