Chess South Africa Ratings Database

PLAYER PAGE

Personal

Johnson, M (Michaela)

Chess SA id

2150157325

FIDE id

Date of birth

2015-12-17 (U12)

Gender

Female

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1135

Item	Main	Standard	Rapid	Blitz
Rating	1136.8	1131.3	1200	1200
Raw rating	1135.1	1129.3	1200	1200
Weighted rating	1136.8	1131.3	1200	1200
Weighted performance	1051.4	1054	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	181.9	183.4	165.8	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.2	-0.1	0	0
New rating	1136.6	1131.2	1200	1200
Analysis
Rating	1136.8	1131.3	1200	1200
Raw rating	1135.1	1129.3	1200	1200
Weighted rating	1136.8	1131.3	1200
Weighted performance	1051.4	1054	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	181.9	183.4	165.8	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	1135.1	1129.3	1200	1200
New weighted rating	1136.6	1131.2	1200	1200
New weighted performance	1051	1053.6	0	0
Temp new rating	1136.6	1131.2	1200	1200
Temp new rating +/-	-0.2	-0.1	0	0
Final new rating +/-	-0.2	-0.1	0	0
New rating	1136.6	1131.2	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	20	20
	19	19
	4	4
	0	0
	0	0
History	43	43

Games since
	Main 39	Standard 39		Rapid 0		Blitz 0
Gender	Female
Age group	U12
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	4243		1482		361
Female	1090		354		77
U12	704		250		58
U12 Female	224		74		14
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-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	20	6	30	-170	1292.3	1122.3
Standard	20	6	30	-170	1292.3	1122.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	43	12	27.91	-187.8	1261.8	1074
Standard	43	12	27.91	-187.8	1261.8	1074
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1135.1	1129.3	1200	1200
2025-09-01	1135.1	1129.3	1200	1200
2025-08-01	1135.1	1129.3	1200	1200
2025-07-01	1149.6	1148.3	1200	1200
2025-06-01	1158.4	1157.3	1200	1200
2025-05-01	1158.4	1157.3	1200	1200
2025-04-01	1158.4	1157.3	1200	1200
2025-03-01	1132.4	1124.1	1200	1200
2025-02-01	1132.1	1124.1	1200	1200
2025-01-01	1115.4	1111.8	1200	1200
2024-12-01	1115.4	1111.8	1200	1200
2024-11-01	1115.4	1111.8	1200	1200
2024-10-01	1115.4	1111.8	1200	1200
2024-09-01	1115.4	1111.8	1200	1200
2024-08-01	1099.9	1083.4	1200	1200
2024-07-01	1153.4	1145	1200	1200
2024-06-01	1147.1	1135.6	1200	1200
2024-08-01	1147.1	1135.6	1200	1200
2024-04-01	1147.1	1135.6	1200	1200
2024-03-01	1147.1	1135.6	1200	1200
2024-02-01	1147.1	1135.6	1200	1200
2024-01-01	1147.1	1135.6	1200	1200
2023-12-01	1147.1	1135.6	1200	1200
2023-11-01	1147.1	1135.6	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	JMC - Trinity Randpark Ridge 2025 (U12)	2025-07-26	2025-07-26	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
2	South African Open 2025 (U12 Girls)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
3	JMC Helpmekaar 2025 (U12)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
4	Chess Power House March Open 2025 (D)	2025-03-22	2025-03-22	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JMC - Trinity Randpark Ridge 2025 (U12)	2025-07-26	2025-07-26	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
2	South African Open 2025 (U12 Girls)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
3	JMC Helpmekaar 2025 (U12)	2025-06-01	2025-06-01	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
4	Chess Power House March Open 2025 (D)	2025-03-22	2025-03-22	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
5	JMC Closed 2024 (U10)	2024-08-09	2024-08-09	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
6	Fourth Knight Riders Juniors Open Chess Tournament 204 (U10)	2024-08-03	2024-08-03	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
7	JMC Trinityhouse Randpark Ridge 2024 (U10)	2024-07-13	2024-07-13	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis
8	Second Knight Riders Juniors Open Chess Tournament 2024 (U10)	2024-06-08	2024-06-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
9	JNW Open - Trinityhouse Little Falls 2023 (U10)	2023-06-24	2023-06-24	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis

#	Games	Start				End
1	2	Tournament Chess Power House March Open 2025				Tournament Chess Power House March Open 2025
		date 2025-03-22	rnd 4	type Standard	result 0.5	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Nyangentsha, K (Khayalethu)				Opponent Tester, L (Legan)
2	2	Tournament JMC Closed 2024				Tournament JMC Closed 2024
		date 2024-08-09	rnd 2	type Standard	result 1	date 2024-08-09	rnd 3	type Standard	result 1
		Opponent Rodda, T (Tirza)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
3	2	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 3	type Standard	result 1
		Opponent Ntshaqa, M (Melokuhle)				Opponent Meijer, C (Carlo)

#	Games	Start				End
1	2	Tournament Chess Power House March Open 2025				Tournament Chess Power House March Open 2025
		date 2025-03-22	rnd 4	type Standard	result 0.5	date 2025-03-22	rnd 5	type Standard	result 1
		Opponent Nyangentsha, K (Khayalethu)				Opponent Tester, L (Legan)
2	2	Tournament JMC Closed 2024				Tournament JMC Closed 2024
		date 2024-08-09	rnd 2	type Standard	result 1	date 2024-08-09	rnd 3	type Standard	result 1
		Opponent Rodda, T (Tirza)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
3	2	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 3	type Standard	result 1
		Opponent Ntshaqa, M (Melokuhle)				Opponent Meijer, C (Carlo)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament JMC Closed 2024				Tournament JMC Closed 2024
		date 2024-08-09	rnd 2	type Standard	result 1	date 2024-08-09	rnd 3	type Standard	result 1
		Opponent Rodda, T (Tirza)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
2	2	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 3	type Standard	result 1
		Opponent Ntshaqa, M (Melokuhle)				Opponent Meijer, C (Carlo)
3	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Milane, Y (Yasmine)				Opponent Milane, Y (Yasmine)

#	Games	Start				End
1	2	Tournament JMC Closed 2024				Tournament JMC Closed 2024
		date 2024-08-09	rnd 2	type Standard	result 1	date 2024-08-09	rnd 3	type Standard	result 1
		Opponent Rodda, T (Tirza)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
2	2	Tournament Second Knight Riders Juniors Open Chess Tournament 2024				Tournament Second Knight Riders Juniors Open Chess Tournament 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 3	type Standard	result 1
		Opponent Ntshaqa, M (Melokuhle)				Opponent Meijer, C (Carlo)
3	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Milane, Y (Yasmine)				Opponent Milane, Y (Yasmine)

No games found.

#	Games	Start				End

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	Barker ,L (Lienka)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Barker ,L (Lienka)	2	1199.4	774.4	2	1206.8	774.4	0	0	0	0	0	0
2	Meijer ,CM (Carlo Marius)	2	1	0	2	1	0	0	0	0	0	0	0
2	Meijer ,CM (Carlo Marius)	2	1308.6	1308.6	2	1307.8	1308.6	0	0	0	0	0	0
3	Bender ,K (Katelin)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Bender ,K (Katelin)	2	1232.5	807.5	2	1237.2	807.5	0	0	0	0	0	0
4	Mwambazi ,J (James)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Mwambazi ,J (James)	2	1220.4	795.4	2	1224.4	795.4	0	0	0	0	0	0
5	Khabong ,O (Omolemo)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Khabong ,O (Omolemo)	1	1256.1	831.1	1	1266.5	831.1	0	0	0	0	0	0
6	Surukanti ,A (Arin Jay)	1	1	425	1	1	425	0	0	0	0	0	0
6	Surukanti ,A (Arin Jay)	1	1194.8	1619.8	1	1193.5	1619.8	0	0	0	0	0	0
7	Khaohle ,K (Karabo)	1	1	425	1	1	425	0	0	0	0	0	0
7	Khaohle ,K (Karabo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Mannar ,A (Aaryan)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Mannar ,A (Aaryan)	1	1268.5	843.5	1	1260.8	843.5	0	0	0	0	0	0
9	Monyane ,B (Boikanyo)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Monyane ,B (Boikanyo)	1	1259.5	834.5	1	1268.9	834.5	0	0	0	0	0	0
10	Du Pisani ,M (Malcolm)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Du Pisani ,M (Malcolm)	1	1300.9	875.9	1	1314.4	875.9	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

Johnson, M (Michaela)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms