Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Villiers, AM (Ammen Mohammed)

Chess SA id

1010115854

FIDE id

Date of birth

2001-11-14 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-11-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1532.5	1510.9	1445.3	1381.1
Raw rating	1505.1	1482.8	1445.3	1381.1
Weighted rating	1532.5	1510.9	1435.1	1336.7
Weighted performance	1378.7	1317.3	1360.9	1261.4
Floor	1068.8	1061.8	979.5	881.1
K-factor	32	32	32	36
Min/Max rating change allowed	107.4	110.8	116.9	128.1
Highest rating	1568.8 2025-03-01	1561.8 2024-11-01	1479.5 2025-08-01	1381.1 2025-05-05
Highest raw rating	1568.8 2025-03-01	1561.8 2024-11-01	1479.5 2025-08-01	1381.1 2025-05-05
Highest weighted rating	1533.1 2025-11-01	1510.9 2025-11-01	1432.5 2025-11-30	1298.8 2025-08-01
Highest weighted performance	1565.2 2025-08-01	1561.8 2024-11-01	1443 2023-10-01	1381.1 2023-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.8	-0.8	0	0
New rating	1531.6	1510	1445.3	1381.1
Analysis
Rating	1532.5	1510.9	1445.3	1381.1
Raw rating	1505.1	1482.8	1445.3	1381.1
Weighted rating	1532.5	1510.9	1435.1
Weighted performance	1378.7	1317.3	1360.9
K-factor	32	32	32	36
Floor	1068.8	1061.8	979.5	881.1
Max/Min rating change allowed	107.4	110.8	116.9	128.1
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	1505.1	1482.8	1445.3	1381.1
New weighted rating	1531.6	1510	1437.5	1342.7
New weighted performance	1369.3	1307.6	1351.4	1251.9
Temp new rating	1531.6	1510	1445.3	1381.1
Temp new rating +/-	-0.8	-0.8	0	0
Final new rating +/-	-0.8	-0.8	0	0
New rating	1531.6	1510	1445.3	1381.1
New K-factor	32	32	32	36
New floor	1068.8	1061.8	979.5	881.1

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	66	17	27	22
	51	36	6	9
	69	22	24	23
	16	16	0	0
	0	0	0	0
History	214	91	69	54

Games since
	Main 117	Standard 53		Rapid 33		Blitz 31
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1019		318		181
Male	889		274		157
Adult	386		123		84
Adult Male	359		109		75
Standard
	RSA		Province		Region
Overall	1128		312		178
Male	968		260		152
Adult	376		99		73
Adult Male	349		88		66
Rapid
	RSA		Province		Region
Overall	354		172		89
Male	314		152		84
Adult	125		43		29
Adult Male	116		42		28
Blitz
	RSA		Province		Region
Overall	207		89		47
Male	193		83		45
Adult	156		71		38
Adult Male	147		66		36


	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	66	35	53.03	25.8	1520.3	1546.1
Standard	17	7.5	44.12	-50	1469	1419
Rapid	27	15.5	57.41	63	1523.4	1586.3
Blitz	22	12	54.55	38.6	1556.3	1594.9
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	214	105	49.07	-7.9	1487.3	1479.3
Standard	91	40.5	44.51	-46.7	1519.9	1473.2
Rapid	69	38	55.07	43.1	1443.2	1486.3
Blitz	54	26.5	49.07	-7.9	1488.6	1480.8

Date	Main	Standard	Rapid	Blitz
2026-01-01	1505.1	1482.8	1445.3	1381.1
2025-11-30	1505.1	1482.8	1445.3	1381.1
2025-11-01	1520.8	1482.8	1479.5	1381.1
2025-09-30	1545.1	1502.4	1479.5	1381.1
2025-09-01	1545.1	1502.4	1479.5	1381.1
2025-08-01	1563.6	1516.1	1479.5	1381.1
2025-07-01	1539.3	1516.1	1444.6	1381.1
2025-06-01	1539.3	1516.1	1444.6	1381.1
2025-05-01	1539.3	1516.1	1444.6	1381.1
2025-04-01	1532.3	1516.1	1437.9	1341.3
2025-03-01	1568.8	1561.8	1437.9	1286.2
2025-02-01	1558.8	1561.8	1391	1286.2
2025-01-01	1555.9	1561.8	1391	1250.9
2024-12-01	1555.9	1561.8	1391	1250.9
2024-11-01	1555.9	1561.8	1391	1250.9
2024-10-01	1530.9	1531.5	1376.2	1250.9
2024-09-01	1522.3	1524.1	1376.2	1250.9
2024-11-01	1522.3	1524.1	1376.2	1250.9
2024-07-01	1522.3	1524.1	1376.2	1250.9
2024-06-01	1527.7	1506.5	1376.2	1250.9
2024-05-01	1404.4	1344.9	1376.2	1250.9
2024-04-01	1404.4	1344.9	1376.2	1250.9
2024-03-01	1404.4	1344.9	1376.2	1250.9
2024-02-01	1404.4	1344.9	1376.2	1250.9

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	Spring Slam 2025 (Intermediate)	2025-11-02	2025-11-02	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (B)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	3	0	Yes	Analysis
3	Cape Town Chess Federation Club League 2025 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	3	3	Yes	Analysis
4	Western Cape Women�s Championship 2025 (Advanced)	2025-08-08	2025-08-10	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
5	4th Curro Durbanville Rapid Open 2025 (Advanced)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	4.5	Yes	Analysis
6	Hermanus Chess Club Open 2025 (Advanced)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	7	3.5	Yes	Analysis
7	Hermanus Chess Club Open 2025 (Blitz)	2025-04-11	2025-04-11	Blitz	Overberg (WOS)	9	8	4	Yes	Analysis
8	Steinitz Festival 2025 (Blitz)	2025-03-14	2025-03-14	Blitz	Cape Town (WCT)	7	7	4.5	Yes	Analysis
9	Western Cape Closed 2025 (B)	2025-03-08	2025-03-09	Standard	Cape Town (WCT)	6	5	1.5	Yes	Analysis
10	Cape of Good Hope Open 2025 (Open Rapid)	2025-02-22	2025-02-22	Rapid	Cape Town (WCT)	7	7	5	Yes	Analysis
11	Cape Town Masters Challenge 2025 (Blitz)	2025-01-09	2025-01-09	Blitz	Cape Town (WCT)	7	7	3.5	Yes	Analysis
12	UCT Open Chess Championship 2024 (Elite)	2024-10-12	2024-10-13	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
13	Spring Slam 2024 (A)	2024-10-05	2024-10-05	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
14	CT League 2024 (A)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	9	3	Yes	Analysis
15	Cape Town Chess Federation Closed Chess Championships 2024 (B)	2024-06-14	2024-06-17	Standard	Cape Town (WCT)	7	5	1.5	Yes	Analysis
16	West Coast & Mykonos Open 2024 (Open)	2024-05-17	2024-05-19	Standard	West Coast (WCU)	6	5	4	Yes	Analysis
17	Steinitz Chess Festival 2024 (Open)	2024-05-10	2024-05-12	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
18	Cape Town Masters Challenge 2024 (Advanced)	2024-01-03	2024-01-07	Standard	Cape Town (WCT)	7	6	2.5	Yes	Analysis
19	Cape Town Chess Club Annual Blitz Championship 2024	2024-01-07	2024-01-07	Blitz	Cape Town (WCT)	9	9	4	Yes	Analysis
20	Bonnievale Open Rapid 2023 (Intermediate)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
21	Western Cape Closed Championship 2023 (C)	2023-09-24	2023-09-25	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
22	Western Cape Closed Championship 2023 (Blitz)	2023-09-23	2023-09-25	Blitz	Cape Town (WCT)	7	7	4	Yes	Analysis
23	WP Club League 2023 (A)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	10	2.5	Yes	Analysis
24	CW Top Schools 2023 (Advanced)	2023-08-11	2023-08-13	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
25	Rylib Chess Winter Slam 2023 (B)	2023-07-06	2023-07-06	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
26	GPCA Rapid 2023 (Advanced)	2023-06-24	2023-06-24	Rapid	Cape Town (WCT)	7	6	3.5	Yes	Analysis
27	Casuarina International 2023 (Rapid)	2023-03-11	2023-03-12	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
28	Casuarina International 2023 (Blitz)	2023-03-11	2023-03-11	Blitz	Cape Town (WCT)	9	9	2	Yes	Analysis
29	Chess WP Individual Blitz 2023 (Open)	2023-01-03	2023-01-03	Blitz	Cape Town (WCT)	7	7	4.5	Yes	Analysis
30	Ussa Chess Championships 2022 (Open)	2022-12-05	2022-12-09	Standard	Frances Baard (NCF)	9	9	4	Yes	Analysis
31	2022 Western Province Club League (B)	2022-08-20	2022-10-01	Standard	Cape Town (WCT)	11	7	3	Yes	Analysis
32	Imam Haron 50th Commemoration Event Open 2019	2019-06-15	2019-06-15	Rapid	Cape Town (WCT)	7	7	3	Yes	Analysis
33	2019 Rylands Library Winter Slam (Intermediate)	2019-06-27	2019-06-27	Rapid	Cape Town (WCT)	6	5	1.5	Yes	Analysis

#	Games	Start				End
1	14	Tournament Cape Town Chess Club Annual Blitz Championship 2024				Tournament Cape Town Chess Federation Closed Chess Championships 2024
		date 2024-01-07	rnd 9	type Blitz	result 1	date 2024-06-14	rnd 1	type Standard	result 1
		Opponent Mohamed, A (Adil)				Opponent Williams, E (Enrico)
2	4	Tournament Cape Town Masters Challenge 2025				Tournament Cape Town Masters Challenge 2025
		date 2025-01-09	rnd 3	type Blitz	result 1	date 2025-01-09	rnd 6	type Blitz	result 0.5
		Opponent Green, L (Lyndon)				Opponent Latreche, K (Khadidja)
3	4	Tournament Bonnievale Open Rapid 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-10-21	rnd 1	type Rapid	result 1	date 2023-10-21	rnd 4	type Rapid	result 1
		Opponent Temmers, I (Isabella)				Opponent Mulweli, S (Sithomola)

#	Games	Start				End
1	13	Tournament Cape Town Masters Challenge 2024				Tournament Cape Town Chess Federation Closed Chess Championships 2024
		date 2024-01-07	rnd 7	type Standard	result 0.5	date 2024-06-14	rnd 1	type Standard	result 1
		Opponent Cindi, M (Mbalenhle)				Opponent Williams, E (Enrico)
2	3	Tournament Western Cape Women�s Championship 2025				Tournament Western Cape Women�s Championship 2025
		date 2025-08-09	rnd 3	type Standard	result 0.5	date 2025-08-10	rnd 5	type Standard	result 0.5
		Opponent Spoelstra, M (Murray)				Opponent Allie, I (Ishmaeel)
3	3	Tournament CT League 2024				Tournament CT League 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 0.5
		Opponent Janse Van Vuuren, T (Terrance)				Opponent Mataramvura, S (Sure)

#	Games	Start				End
1	7	Tournament Rylib Chess Winter Slam 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-07-06	rnd 4	type Rapid	result 1	date 2023-10-21	rnd 4	type Rapid	result 1
		Opponent Tsabola, B (Bright)				Opponent Mulweli, S (Sithomola)
2	4	Tournament GPCA Rapid 2023				Tournament GPCA Rapid 2023
		date 2023-06-24	rnd 4	type Rapid	result 1	date 2023-06-24	rnd 7	type Rapid	result 0.5
		Opponent Logan, H (Hartley)				Opponent Thakersee, A (Akshay)
3	3	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 2	type Rapid	result 1	date 2025-07-19	rnd 4	type Rapid	result 1
		Opponent Vlok, A (Adiaan)				Opponent Zenzile, A (Amahle)

#	Games	Start				End
1	4	Tournament Cape Town Masters Challenge 2025				Tournament Cape Town Masters Challenge 2025
		date 2025-01-09	rnd 3	type Blitz	result 1	date 2025-01-09	rnd 6	type Blitz	result 0.5
		Opponent Green, L (Lyndon)				Opponent Latreche, K (Khadidja)
2	4	Tournament Chess WP Individual Blitz 2023				Tournament Casuarina International 2023
		date 2023-01-03	rnd 5	type Blitz	result 1	date 2023-03-11	rnd 1	type Blitz	result 1
		Opponent Chiriya, T (Takudzwa)				Opponent French, A (Andrew)
3	3	Tournament Hermanus Chess Club Open 2025				Tournament Hermanus Chess Club Open 2025
		date 2025-04-11	rnd 7	type Blitz	result 1	date 2025-04-11	rnd 9	type Blitz	result 1
		Opponent Van Der Westhuizen, W (Werner)				Opponent Barnard, C (Charel)

#	Games	Start				End
1	4	Tournament Steinitz Chess Festival 2024				Tournament Steinitz Chess Festival 2024
		date 2024-05-10	rnd 1	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Abrahams, H (Harrison)				Opponent Solomon, I (Izaiah)
2	4	Tournament Bonnievale Open Rapid 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-10-21	rnd 1	type Rapid	result 1	date 2023-10-21	rnd 4	type Rapid	result 1
		Opponent Temmers, I (Isabella)				Opponent Mulweli, S (Sithomola)
3	4	Tournament Chess WP Individual Blitz 2023				Tournament Casuarina International 2023
		date 2023-01-03	rnd 5	type Blitz	result 1	date 2023-03-11	rnd 1	type Blitz	result 1
		Opponent Chiriya, T (Takudzwa)				Opponent French, A (Andrew)

#	Games	Start				End
1	4	Tournament Steinitz Chess Festival 2024				Tournament Steinitz Chess Festival 2024
		date 2024-05-10	rnd 1	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Abrahams, H (Harrison)				Opponent Solomon, I (Izaiah)
2	3	Tournament West Coast & Mykonos Open 2024				Tournament West Coast & Mykonos Open 2024
		date 2024-05-18	rnd 2	type Standard	result 1	date 2024-05-18	rnd 4	type Standard	result 1
		Opponent Opperman, M (Matthew)				Opponent Jordaan, H (Hano)
3	3	Tournament WP Club League 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-02	rnd 10	type Standard	result 1	date 2023-09-24	rnd 1	type Standard	result 1
		Opponent Kudakwashe, S (Shambare)				Opponent Maruma, K (Katlego)

#	Games	Start				End
1	7	Tournament Rylib Chess Winter Slam 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-07-06	rnd 4	type Rapid	result 1	date 2023-10-21	rnd 4	type Rapid	result 1
		Opponent Tsabola, B (Bright)				Opponent Mulweli, S (Sithomola)
2	3	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 2	type Rapid	result 1	date 2025-07-19	rnd 4	type Rapid	result 1
		Opponent Vlok, A (Adiaan)				Opponent Zenzile, A (Amahle)
3	3	Tournament GPCA Rapid 2023				Tournament GPCA Rapid 2023
		date 2023-06-24	rnd 4	type Rapid	result 1	date 2023-06-24	rnd 6	type Rapid	result 1
		Opponent Logan, H (Hartley)				Opponent Esau, O (Omar)

#	Games	Start				End
1	4	Tournament Chess WP Individual Blitz 2023				Tournament Casuarina International 2023
		date 2023-01-03	rnd 5	type Blitz	result 1	date 2023-03-11	rnd 1	type Blitz	result 1
		Opponent Chiriya, T (Takudzwa)				Opponent French, A (Andrew)
2	3	Tournament Hermanus Chess Club Open 2025				Tournament Hermanus Chess Club Open 2025
		date 2025-04-11	rnd 7	type Blitz	result 1	date 2025-04-11	rnd 9	type Blitz	result 1
		Opponent Van Der Westhuizen, W (Werner)				Opponent Barnard, C (Charel)
3	3	Tournament Cape Town Masters Challenge 2025				Tournament Cape Town Masters Challenge 2025
		date 2025-01-09	rnd 3	type Blitz	result 1	date 2025-01-09	rnd 5	type Blitz	result 1
		Opponent Green, L (Lyndon)				Opponent Macheka, C (Clayton)

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	Bhawoodien ,SH (Shabier Husain)	4	0	-425	0	0	0	1	0	-425	3	0	-425
1	Bhawoodien ,SH (Shabier Husain)	4	1940.6	1515.6	0	0	0	1	1883.8	1515.6	3	1972.5	1515.6
2	Palmer ,J (Jesse)	3	2.5	283.3	2	1.5	212.5	0	0	0	1	1	425
2	Palmer ,J (Jesse)	3	1563.9	1847.2	2	1615.4	1776.4	0	0	0	1	709.6	1988.9
3	Willenberg ,RC (Roland Chester)	3	0	-425	1	0	-425	2	0	-425	0	0	0
3	Willenberg ,RC (Roland Chester)	3	1642.7	1217.7	1	1637	1217.7	2	1639.1	1217.7	0	0	0
4	Allie ,I (Ishmaeel)	3	0.5	-283.3	1	0.5	0	1	0	-425	1	0	-425
4	Allie ,I (Ishmaeel)	3	1609.6	1326.3	1	1709.9	1609.6	1	1411.9	1184.6	1	1075.6	1184.6
5	Minnaar ,E (Ethan)	2	1	0	2	1	0	0	0	0	0	0	0
5	Minnaar ,E (Ethan)	2	1440.3	1440.3	2	1367.6	1440.3	0	0	0	0	0	0
6	Cindi ,M (Mbalenhle)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
6	Cindi ,M (Mbalenhle)	2	1520	1732.5	2	1505.9	1732.5	0	0	0	0	0	0
7	Maneveld ,C (Conrad)	2	0	-425	1	0	-425	1	0	-425	0	0	0
7	Maneveld ,C (Conrad)	2	1474.1	1049.1	1	1582.7	1049.1	1	1202	1049.1	0	0	0
8	Samuels ,ER (Ethan)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Samuels ,ER (Ethan)	2	1945.8	1520.8	1	1903.5	1520.8	1	1987.3	1520.8	0	0	0
9	Swarts ,P (Paul)	2	1	0	1	0	-425	1	1	425	0	0	0
9	Swarts ,P (Paul)	2	1451.3	1451.3	1	1397.9	1026.3	1	1413.6	1876.3	0	0	0
10	Slamang ,MK (Mohammed Kassiem)	2	1	0	1	0	-425	1	1	425	0	0	0
10	Slamang ,MK (Mohammed Kassiem)	2	1369.8	1369.8	1	1415.6	944.8	1	1348.3	1794.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

De Villiers, AM (Ammen Mohammed)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms