Chess South Africa Ratings Database

PLAYER PAGE

Personal

Luo, Y (Yichen)

Chess SA id

1140192105

FIDE id

Date of birth

2014-12-27 (U12)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1339.3

Item	Main	Standard	Rapid	Blitz
Rating	1397.1	1402.9	1200.8	1200
Raw rating	1397.1	1402.9	1200.8	1200
Weighted rating	1291.9	1293.5	1200.8	1200
Weighted performance	1394.9	1393.2	0	0
Floor	897	902.9	700.8	700
K-factor	36	32	36	36
Min/Max rating change allowed	125.2	124.2	165.6	165.8
Highest rating	1425.6 2025-09-01	1466 2024-03-01	1203.9 2024-02-01	1200 2024-02-01
Highest raw rating	1397.1 2025-09-01	1402.9 2025-09-01	1200.8 2024-03-01	1200 2024-02-01
Highest weighted rating	1361 2024-05-01	1360.1 2024-05-01	1200.8 2024-10-01	1200 2024-02-01
Highest weighted performance	1425.6 2025-09-01	1466 2024-03-01	1203.9 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1397.1	1402.9	1200.8	1200
Analysis
Rating	1397.1	1402.9	1200.8	1200
Raw rating	1397.1	1402.9	1200.8	1200
Weighted rating	1291.9	1293.5	1200.8
Weighted performance	1394.9	1393.2	0
K-factor	36	32	36	36
Floor	897	902.9	700.8	700
Max/Min rating change allowed	125.2	124.2	165.6	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	1397.1	1402.9	1200.8	1200
New weighted rating	1302.7	1304.7	1200.8	1200
New weighted performance	1386.3	1384.7	0	0
Temp new rating	1397.1	1402.9	1200.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1397.1	1402.9	1200.8	1200
New K-factor	36	32	36	36
New floor	897.1	902.9	700.8	700

Item	Main	Standard	Rapid
	0	0	0
	29	29	0
	20	15	5
	0	0	0
	0	0	0
	0	0	0
History	49	44	5

Games since
	Main 49	Standard 44		Rapid 5		Blitz 0
Gender	Male
Age group	U12
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	2216		777		244
Male	1805		620		199
U12	293		108		32
U12 Male	212		74		26
Standard
	RSA		Province		Region
Overall	2065		765		238
Male	1686		619		196
U12	271		103		33
U12 Male	197		70		27
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	29	17	58.62	73.3	1273.7	1347
Standard	29	17	58.62	73.3	1273.7	1347
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	49	27.5	56.12	52	1259.5	1311.5
Standard	44	25	56.82	58	1260.5	1318.4
Rapid	5	2.5	50	0	1250.9	1250.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1397.1	1402.9	1200.8	1200
2025-09-30	1397.1	1402.9	1200.8	1200
2025-09-01	1397.1	1402.9	1200.8	1200
2025-08-01	1361	1360.1	1200.8	1200
2025-07-01	1361	1360.1	1200.8	1200
2025-06-01	1361	1360.1	1200.8	1200
2025-05-01	1225.5	1226.5	1200.8	1200
2025-04-01	1225.5	1226.5	1200.8	1200
2025-03-01	1218.2	1218.1	1200.8	1200
2025-02-01	1226.6	1227.4	1200.8	1200
2025-01-01	1226.6	1227.4	1200.8	1200
2024-12-01	1226.6	1227.4	1200.8	1200
2024-11-01	1226.6	1227.4	1200.8	1200
2024-10-01	1226.6	1227.4	1200.8	1200
2024-09-01	1226.6	1227.4	1200.8	1200
2024-08-01	1226.6	1227.4	1200.8	1200
2024-07-01	1226.6	1227.4	1200.8	1200
2024-09-01	1226.6	1227.4	1200.8	1200
2024-05-01	1232	1235.7	1200.8	1200
2024-04-01	1253.2	1261.6	1200.8	1200
2024-03-01	1208.7	1200	1200.8	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	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	Lonehill Chess Academy - 1st Rated Tournament 2025 (C)	2025-08-02	2025-08-02	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
2	Knight Riders Juniors Open Chess Tournament 2025 (D)	2025-05-24	2025-05-24	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
3	CPH May 2025 (C)	2025-05-03	2025-05-03	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
4	MCA Summer March 2025 (Junior)	2025-03-08	2025-03-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
5	MCA Welcome 2025 (Junior)	2025-02-15	2025-02-15	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
6	First Knights Juniors Chess Tournament 2025 (C)	2025-02-09	2025-02-09	Standard	Johannesburg Metro (GJM)	5	4	0.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Lonehill Chess Academy - 1st Rated Tournament 2025 (C)	2025-08-02	2025-08-02	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
2	Knight Riders Juniors Open Chess Tournament 2025 (D)	2025-05-24	2025-05-24	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
3	CPH May 2025 (C)	2025-05-03	2025-05-03	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
4	MCA Summer March 2025 (Junior)	2025-03-08	2025-03-08	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
5	MCA Welcome 2025 (Junior)	2025-02-15	2025-02-15	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
6	First Knights Juniors Chess Tournament 2025 (C)	2025-02-09	2025-02-09	Standard	Johannesburg Metro (GJM)	5	4	0.5	Yes	Analysis
7	Knight Riders Spring Chess Tournament 2024 (D)	2024-09-28	2024-09-28	Standard	Johannesburg Metro (GJM)	5	0	0	No	Analysis
8	Chess Power House May Open 2024 (D)	2024-05-25	2024-05-25	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
9	First Knight Riders Junior Open 2024 (C)	2024-04-20	2024-04-20	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
10	1st Knights Open Tournament 2024 (E)	2024-03-23	2024-03-23	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
11	Gear Up Mzansi Rapid 2024 (Junior)	2024-02-17	2024-02-17	Rapid	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament CPH May 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-03	rnd 2	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Leope, W (Waratwa)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
2	5	Tournament MCA Welcome 2025				Tournament MCA Summer March 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Chen, Z (Zoey)				Opponent Moyo, M (Musawenkosi)
3	5	Tournament Gear Up Mzansi Rapid 2024				Tournament 1st Knights Open Tournament 2024
		date 2024-02-17	rnd 4	type Rapid	result 0.5	date 2024-03-23	rnd 3	type Standard	result 1
		Opponent Botha, J (Johann Alexander)				Opponent Crossan, A (Addison)

#	Games	Start				End
1	5	Tournament CPH May 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-03	rnd 2	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Leope, W (Waratwa)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
2	5	Tournament MCA Welcome 2025				Tournament MCA Summer March 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Chen, Z (Zoey)				Opponent Moyo, M (Musawenkosi)
3	3	Tournament Lonehill Chess Academy - 1st Rated Tournament 2025				Tournament Lonehill Chess Academy - 1st Rated Tournament 2025
		date 2025-08-02	rnd 1	type Standard	result 1	date 2025-08-02	rnd 3	type Standard	result 1
		Opponent Surukanti, A (Arin Jay)				Opponent Whittaker, L (Lillian)

#	Games	Start				End
1	2	Tournament Gear Up Mzansi Rapid 2024				Tournament Gear Up Mzansi Rapid 2024
		date 2024-02-17	rnd 4	type Rapid	result 0.5	date 2024-02-17	rnd 5	type Rapid	result 1
		Opponent Botha, J (Johann Alexander)				Opponent Murugan, S (Shreya)
2	1	Tournament Gear Up Mzansi Rapid 2024				Tournament Gear Up Mzansi Rapid 2024
		date 2024-02-17	rnd 1	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Tau, K (Kemiso)				Opponent Tau, K (Kemiso)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament CPH May 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-03	rnd 2	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Leope, W (Waratwa)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
2	4	Tournament Gear Up Mzansi Rapid 2024				Tournament 1st Knights Open Tournament 2024
		date 2024-02-17	rnd 5	type Rapid	result 1	date 2024-03-23	rnd 3	type Standard	result 1
		Opponent Murugan, S (Shreya)				Opponent Crossan, A (Addison)
3	3	Tournament Lonehill Chess Academy - 1st Rated Tournament 2025				Tournament Lonehill Chess Academy - 1st Rated Tournament 2025
		date 2025-08-02	rnd 1	type Standard	result 1	date 2025-08-02	rnd 3	type Standard	result 1
		Opponent Surukanti, A (Arin Jay)				Opponent Whittaker, L (Lillian)

#	Games	Start				End
1	5	Tournament CPH May 2025				Tournament Knight Riders Juniors Open Chess Tournament 2025
		date 2025-05-03	rnd 2	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Leope, W (Waratwa)				Opponent Kuchibhotla, AKA (Achyuta Kartikeya Arjun)
2	3	Tournament Lonehill Chess Academy - 1st Rated Tournament 2025				Tournament Lonehill Chess Academy - 1st Rated Tournament 2025
		date 2025-08-02	rnd 1	type Standard	result 1	date 2025-08-02	rnd 3	type Standard	result 1
		Opponent Surukanti, A (Arin Jay)				Opponent Whittaker, L (Lillian)
3	3	Tournament MCA Welcome 2025				Tournament MCA Summer March 2025
		date 2025-02-15	rnd 5	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Van Zijl, J (Joane)				Opponent Moyo, M (Musawenkosi)

#	Games	Start				End
1	1	Tournament Gear Up Mzansi Rapid 2024				Tournament Gear Up Mzansi Rapid 2024
		date 2024-02-17	rnd 5	type Rapid	result 1	date 2024-02-17	rnd 5	type Rapid	result 1
		Opponent Murugan, S (Shreya)				Opponent Murugan, S (Shreya)
2	1	Tournament Gear Up Mzansi Rapid 2024				Tournament Gear Up Mzansi Rapid 2024
		date 2024-02-17	rnd 1	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Tau, K (Kemiso)				Opponent Tau, K (Kemiso)

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	Ngubane ,L (Lesedi)	2	1	0	2	1	0	0	0	0	0	0	0
1	Ngubane ,L (Lesedi)	2	1165.6	1165.6	2	1161.1	1165.6	0	0	0	0	0	0
2	Williams ,J (Joshua)	2	0	-425	1	0	-425	1	0	-425	0	0	0
2	Williams ,J (Joshua)	2	1325.2	900.2	1	1356.8	900.2	1	1200	900.2	0	0	0
3	Moyo ,M (Musawenkosi)	1	1	425	1	1	425	0	0	0	0	0	0
3	Moyo ,M (Musawenkosi)	1	1195	1620	1	1193.9	1620	0	0	0	0	0	0
4	Whittaker ,L (Lillian)	1	1	425	1	1	425	0	0	0	0	0	0
4	Whittaker ,L (Lillian)	1	1459.5	1884.5	1	1454.5	1884.5	0	0	0	0	0	0
5	Kapur ,Y (Yashvardhan)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Kapur ,Y (Yashvardhan)	1	1221.4	796.4	1	1220.2	796.4	0	0	0	0	0	0
6	Waring ,C (Caydence)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Waring ,C (Caydence)	1	1509.5	1084.5	1	1471.2	1084.5	0	0	0	0	0	0
7	Zou ,Z (ZhiSheng)	1	1	425	1	1	425	0	0	0	0	0	0
7	Zou ,Z (ZhiSheng)	1	1199.8	1624.8	1	1199.7	1624.8	0	0	0	0	0	0
8	Van Zijl ,J (Joane)	1	1	425	1	1	425	0	0	0	0	0	0
8	Van Zijl ,J (Joane)	1	1116.8	1541.8	1	1102.1	1541.8	0	0	0	0	0	0
9	Laval ,E (Ethan)	1	1	425	1	1	425	0	0	0	0	0	0
9	Laval ,E (Ethan)	1	1294.7	1719.7	1	1278	1719.7	0	0	0	0	0	0
10	Mandepudi ,A (Anish)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mandepudi ,A (Anish)	1	1177.6	1602.6	1	1172.3	1602.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Luo, Y (Yichen)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms