PLAYER PAGE

Personal

Marais, JS (Jacobus Stephanus)

Chess SA id

1100097226

FIDE id

?

Date of birth

2010-06-21 (U16)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

No

Last active game

2024-05-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item Main Standard Rapid Blitz
Rating 1262.9 1254.9 1168 1200
Raw rating 1262 1253.7 1168 1200
Weighted rating 1262.9 1254.9 1168 1200
Weighted performance 964.6 964.1 0 0
Floor 792.2 789.9 700 700
K-factor 36 36 36 36
Min/Max rating change allowed 151.8 153.6 173.6 165.8
Highest rating 1296.3
2020-01-01
1289.9
2024-02-01
1200
2018-10-01
1200
2018-10-01
Highest raw rating 1292.2
2024-02-01
1289.9
2024-02-01
1200
2020-01-01
1200
2024-02-01
Highest weighted rating 1261.7
2025-08-01
1253.7
2025-08-01
1200
2018-10-01
1200
2018-10-01
Highest weighted performance 1296.3
2020-01-01
1282
2020-01-01
1200
2020-01-01
1200
2024-02-01

Prediction
Item Main Standard Rapid Blitz
Rating change 0.3 0.2 0 0
New rating 1263.2 1255.1 1168 1200
Analysis
Rating 1262.9 1254.9 1168 1200
Raw rating 1262 1253.7 1168 1200
Weighted rating 1262.9 1254.9 1168
Weighted performance 964.6 964.1 0
K-factor 36 36 36 36
Floor 792.2 789.9 700 700
Max/Min rating change allowed 151.8 153.6 173.6 165.8
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 1262 1253.7 1168 1200
New weighted rating 1263.2 1255.1 1168 1200
New weighted performance 964.2 963.7 0 0
Temp new rating 1263.2 1255.1 1168 1200
Temp new rating +/- 0.3 0.2 0 0
Final new rating +/- 0.3 0.2 0 0
New rating 1263.2 1255.1 1168 1200
New K-factor 36 36 36 36
New floor 792.2 789.9 700 700

Item Main Standard Rapid Blitz
0 0 0 0
0 0 0 0
9 9 0 0
27 27 0 0
48 41 7 0
21 21 0 0
History 227 220 7 0

Games since
Main
9
Standard
9
Rapid
0
Blitz
0
Gender Male
Age group U16
Region Tshwane (GTP)
Province Gauteng (GT)
Main
RSA Province Region
Overall -1 -1 -1
Male -1 -1 -1
U16 -1 -1 -1
U16 Male -1 -1 -1
Standard
RSA Province Region
Overall -1 -1 -1
Male -1 -1 -1
U16 -1 -1 -1
U16 Male -1 -1 -1
Rapid
RSA Province Region
Overall -1 -1 -1
Male -1 -1 -1
U16 -1 -1 -1
U16 Male -1 -1 -1
Blitz
RSA Province Region
Overall -1 -1 -1
Male -1 -1 -1
U16 -1 -1 -1
U16 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 227 104 45.81 -35.6 1184.1 1148.5
Standard 220 101 45.91 -34.8 1181.9 1147.1
Rapid 7 3 42.86 -60.7 1252.8 1192.1
Blitz 0 0 0 0 0 0

Date Main Standard Rapid Blitz
2025-09-30 1262 1253.7 1168 1200
2025-09-01 1262 1253.7 1168 1200
2025-08-01 1262 1253.7 1168 1200
2025-07-01 1262 1253.5 1168 1200
2025-06-01 1262 1253.5 1168 1200
2025-05-01 1262 1253.5 1168 1200
2025-04-01 1262 1253.5 1168 1200
2025-03-01 1262 1253.5 1168 1200
2025-02-01 1262 1253.5 1168 1200
2025-01-01 1262 1253.5 1168 1200
2024-12-01 1262 1253.5 1168 1200
2024-11-01 1262 1253.5 1168 1200
2024-10-01 1262 1253.5 1168 1200
2024-09-01 1262 1253.5 1168 1200
2024-08-01 1262 1253.5 1168 1200
2024-07-01 1262 1253.5 1168 1200
2024-06-01 1262 1253.5 1168 1200
2024-08-01 1292.2 1289.9 1168 1200
2024-04-01 1292.2 1289.9 1168 1200
2024-03-01 1292.2 1289.9 1168 1200
2024-02-01 1292.2 1289.9 1168 1200
2024-01-01 1196.1 1185.5 1168 1200
2023-12-01 1196.1 1185.5 1168 1200
2023-11-01 1196.1 1185.5 1168 1200

Comming soon.

Tournaments

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 2024 Mid Gauteng Open Chess Tournament (U16) 2024-05-02 2024-05-02 Standard Tshwane (GTP) 5 4 1 Yes Analysis
2 2024 Gauteng Inter-Region Chess Championship (U14C) 2024-01-13 2024-01-14 Standard Tshwane (GTP) 5 5 5 Yes Analysis
3 2023 Alekhine Open Tournament (C) 2023-09-09 2023-09-09 Standard Tshwane (GTP) 5 5 1 Yes Analysis
4 2023 Etienne Lewis Closed Tournament (U14) 2023-08-25 2023-08-27 Standard Tshwane (GTP) 7 7 3 Yes Analysis
5 2023 Milos Ristic Open Tournament (C) 2023-04-27 2023-04-27 Standard Tshwane (GTP) 5 5 2 Yes Analysis
6 2023 Afrikaans Hoër Seunskool Open Chess Tournament (C) 2023-03-04 2023-03-04 Standard Tshwane (GTP) 5 5 3.5 Yes Analysis
7 2023 Tshwane Chess Open Registration Tournament (C2) 2023-01-28 2023-01-28 Standard Tshwane (GTP) 5 5 2.5 Yes Analysis
8 2022 South African Junior Team Chess Championships (U14 Open) 2022-12-04 2022-12-08 Standard 4 Knights (4K) 7 5 3.5 Yes Analysis
9 2022 Etienne Lewis (U14 Open) 2022-09-02 2022-09-04 Standard Tshwane (GTP) 7 7 2 Yes Analysis
10 D4 Play Offs 2022 (U13) 2022-07-30 2022-07-30 Standard Tshwane (GTP) 5 5 1 Yes Analysis
11 2022 Blou Bul Open (C) 2022-06-25 2022-06-26 Standard Tshwane (GTP) 5 5 0.5 Yes Analysis
12 2022 Milos Ristic Open Chess Tournament (C) 2022-05-28 2022-05-28 Standard Tshwane (GTP) 5 4 2 Yes Analysis
13 D4 Individuals 2022 (U13 Open) 2022-04-23 2022-04-23 Rapid Tshwane (GTP) 7 7 3 Yes Analysis
14 CP Ope 2022 (C) 2022-02-19 2022-02-19 Standard Tshwane (GTP) 5 5 2 Yes Analysis
15 2022 Gauteng Interregion (U12 Open) 2022-02-26 2022-02-26 Standard Tshwane (GTP) 5 5 3 Yes Analysis
16 2022 Tshwane Chess Open Registration Tournament (C2) 2022-01-29 2022-01-29 Standard Tshwane (GTP) 5 5 2 Yes Analysis
17 2021 Etienne Lewis Closed Trials (U12 Open) 2021-09-24 2021-09-26 Standard Nelson Mandela Bay (ENM) 7 6 2 Yes Analysis
18 2021 Chris Greyling Open Tournament (C) 2021-05-08 2021-05-08 Standard Tshwane (GTP) 5 5 3 Yes Analysis
19 2021 Lubowski Open Tournament (C) 2021-05-01 2021-05-02 Standard Tshwane (GTP) 5 5 2 Yes Analysis
20 2021 Registration Tournament (C) 2021-03-13 2021-03-13 Standard Tshwane (GTP) 5 5 2 Yes Analysis
21 2020 Waterkloof Open (C) 2020-02-29 2020-03-01 Standard Tshwane (GTP) 5 5 2 Yes Analysis
22 2020 Tuks Open (C) 2020-02-22 2020-02-22 Standard Tshwane (GTP) 5 5 0.5 Yes Analysis
23 2020 Constantiapark Open Chess Tournament (C) 2020-02-08 2020-02-08 Standard Tshwane (GTP) 5 5 2 Yes Analysis
24 2020 Blou Bul (C) 2020-02-15 2020-02-15 Standard Tshwane (GTP) 5 5 1.5 Yes Analysis
25 2019 South African Junior Team Championships (U10B) 2020-01-08 2020-01-08 Standard 4 Knights (4K) 7 7 5 Yes Analysis
26 2019 TC SAJCC Prep Tournament (C) 2019-11-30 2019-11-30 Standard Tshwane (GTP) 5 5 4 Yes Analysis
27 2019 Etienne Lewis Trials (U10 Boys) 2019-08-30 2019-09-01 Standard Tshwane (GTP) 7 7 5 Yes Analysis
28 2019 Mid-Gauteng Open (D) 2019-08-17 2019-08-17 Standard Tshwane (GTP) 5 5 2 Yes Analysis
29 2019 Alekhine Open (D) 2019-08-09 2019-08-10 Standard Tshwane (GTP) 5 5 2 Yes Analysis
30 2019 Lubowski Open Tournament (C) 2019-05-11 2019-05-12 Standard Tshwane (GTP) 5 5 1 Yes Analysis
31 2019 Chris Greyling (C) 2019-04-27 2019-04-27 Standard Tshwane (GTP) 5 5 1 Yes Analysis
32 2019 Waterkloof Open (E) 2019-03-02 2019-03-02 Standard Tshwane (GTP) 5 5 4 Yes Analysis
33 2019 Blou Bul (E) 2019-02-16 2019-02-16 Standard Tshwane (GTP) 5 5 4 Yes Analysis
34 2019 Tshwane Chess Registration Tournament (E) 2019-01-26 2019-01-26 Standard Tshwane (GTP) 5 5 4 Yes Analysis
35 2018 Tshwane Inter Region (U10E) 2018-12-01 2018-12-01 Standard Cape Town (WCT) 5 5 2.5 Yes Analysis
36 South African Junior Team Championships 2018 (U10B) 2018-12-16 2018-12-20 Standard 4 Knights (4K) 7 7 0.5 Yes Analysis
37 2018 Etienne Lewis Trials (U10 Boys) 2018-08-31 2018-09-02 Standard Tshwane (GTP) 7 7 3 Yes Analysis
38 2018 Mid Gauteng Open (E) 2018-08-18 2018-08-18 Standard Tshwane (GTP) 5 5 5 Yes Analysis
39 2018 D4 Tshwane South Schools League Finals (U9) 2018-08-03 2018-08-03 Standard Tshwane (GTP) 5 5 1.5 Yes Analysis
40 2018 Capablanca Swiss (D) 2018-04-27 2018-04-27 Standard Tshwane (GTP) 5 5 2 Yes Analysis
41 2018 Waterkloof Open (F) 2018-03-03 2018-03-04 Standard Tshwane (GTP) 5 5 2.5 Yes Analysis
42 2018 Crawford Open (D) 2018-03-24 2018-03-24 Standard Tshwane (GTP) 5 5 1 Yes Analysis
43 2018 Blou Bul Open (F) 2018-02-17 2018-02-17 Standard Tshwane (GTP) 5 4 2 Yes Analysis

Top 3 Streaks

# Games Start End
1 8 Tournament
2019 Tshwane Chess Registration Tournament
Tournament
2019 Waterkloof Open
date
2019-01-26
rnd
4
type
Standard
result
1
date
2019-03-02
rnd
1
type
Standard
result
1
Opponent
Kassen, I (Ishaan)
Opponent
Pillay, T (Tahir)
2 7 Tournament
2022 Etienne Lewis
Tournament
2023 Tshwane Chess Open Registration Tournament
date
2022-09-04
rnd
7
type
Standard
result
1
date
2023-01-28
rnd
1
type
Standard
result
1
Opponent
Makaleng, K (Kgothatso)
Opponent
Buchner, E (Emil)
3 6 Tournament
2019 South African Junior Team Championships
Tournament
2020 Constantiapark Open Chess Tournament
date
2020-01-05
rnd
3
type
Standard
result
1
date
2020-02-08
rnd
1
type
Standard
result
1
Opponent
Esterhuizen, K (Kiegan)
Opponent
Van Rooyen, M (Marcel)
# Games Start End
1 8 Tournament
2019 Tshwane Chess Registration Tournament
Tournament
2019 Waterkloof Open
date
2019-01-26
rnd
4
type
Standard
result
1
date
2019-03-02
rnd
1
type
Standard
result
1
Opponent
Kassen, I (Ishaan)
Opponent
Pillay, T (Tahir)
2 7 Tournament
2022 Etienne Lewis
Tournament
2023 Tshwane Chess Open Registration Tournament
date
2022-09-04
rnd
7
type
Standard
result
1
date
2023-01-28
rnd
1
type
Standard
result
1
Opponent
Makaleng, K (Kgothatso)
Opponent
Buchner, E (Emil)
3 6 Tournament
2019 South African Junior Team Championships
Tournament
2020 Constantiapark Open Chess Tournament
date
2020-01-05
rnd
3
type
Standard
result
1
date
2020-02-08
rnd
1
type
Standard
result
1
Opponent
Esterhuizen, K (Kiegan)
Opponent
Van Rooyen, M (Marcel)
# Games Start End
1 1 Tournament
D4 Individuals 2022
Tournament
D4 Individuals 2022
date
2022-04-23
rnd
5
type
Rapid
result
1
date
2022-04-23
rnd
5
type
Rapid
result
1
Opponent
Naicker, H (Hoovasen)
Opponent
Naicker, H (Hoovasen)
2 1 Tournament
D4 Individuals 2022
Tournament
D4 Individuals 2022
date
2022-04-23
rnd
3
type
Rapid
result
1
date
2022-04-23
rnd
3
type
Rapid
result
1
Opponent
Jacobs, R (Rico)
Opponent
Jacobs, R (Rico)
3 1 Tournament
D4 Individuals 2022
Tournament
D4 Individuals 2022
date
2022-04-23
rnd
1
type
Rapid
result
1
date
2022-04-23
rnd
1
type
Rapid
result
1
Opponent
Makgotlwe, P (Phenyo)
Opponent
Makgotlwe, P (Phenyo)
No games found.
# Games Start End
# Games Start End
1 6 Tournament
2019 South African Junior Team Championships
Tournament
2020 Constantiapark Open Chess Tournament
date
2020-01-05
rnd
3
type
Standard
result
1
date
2020-02-08
rnd
1
type
Standard
result
1
Opponent
Esterhuizen, K (Kiegan)
Opponent
Van Rooyen, M (Marcel)
2 5 Tournament
2024 Gauteng Inter-Region Chess Championship
Tournament
2024 Gauteng Inter-Region Chess Championship
date
2024-01-13
rnd
1
type
Standard
result
1
date
2024-01-14
rnd
5
type
Standard
result
1
Opponent
Kruger, J (James)
Opponent
Mmakou, L (Lesedi)
3 5 Tournament
2018 Mid Gauteng Open
Tournament
2018 Mid Gauteng Open
date
2018-08-18
rnd
1
type
Standard
result
1
date
2018-08-18
rnd
5
type
Standard
result
1
Opponent
De Bruin, CL (Charl Louis)
Opponent
Bogaard, A (Anneke)
# Games Start End
1 6 Tournament
2019 South African Junior Team Championships
Tournament
2020 Constantiapark Open Chess Tournament
date
2020-01-05
rnd
3
type
Standard
result
1
date
2020-02-08
rnd
1
type
Standard
result
1
Opponent
Esterhuizen, K (Kiegan)
Opponent
Van Rooyen, M (Marcel)
2 5 Tournament
2024 Gauteng Inter-Region Chess Championship
Tournament
2024 Gauteng Inter-Region Chess Championship
date
2024-01-13
rnd
1
type
Standard
result
1
date
2024-01-14
rnd
5
type
Standard
result
1
Opponent
Kruger, J (James)
Opponent
Mmakou, L (Lesedi)
3 5 Tournament
2018 Mid Gauteng Open
Tournament
2018 Mid Gauteng Open
date
2018-08-18
rnd
1
type
Standard
result
1
date
2018-08-18
rnd
5
type
Standard
result
1
Opponent
De Bruin, CL (Charl Louis)
Opponent
Bogaard, A (Anneke)
# Games Start End
1 1 Tournament
D4 Individuals 2022
Tournament
D4 Individuals 2022
date
2022-04-23
rnd
5
type
Rapid
result
1
date
2022-04-23
rnd
5
type
Rapid
result
1
Opponent
Naicker, H (Hoovasen)
Opponent
Naicker, H (Hoovasen)
2 1 Tournament
D4 Individuals 2022
Tournament
D4 Individuals 2022
date
2022-04-23
rnd
3
type
Rapid
result
1
date
2022-04-23
rnd
3
type
Rapid
result
1
Opponent
Jacobs, R (Rico)
Opponent
Jacobs, R (Rico)
3 1 Tournament
D4 Individuals 2022
Tournament
D4 Individuals 2022
date
2022-04-23
rnd
1
type
Rapid
result
1
date
2022-04-23
rnd
1
type
Rapid
result
1
Opponent
Makgotlwe, P (Phenyo)
Opponent
Makgotlwe, P (Phenyo)
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
Aor Prat Aor Prat Aor Prat Aor Prat
1 Van Rooyen ,M (Marcel) 3 2 141.7 3 2 141.7 0 0 0 0 0 0
1389 1530.7 1383.4 1530.7 0 0 0 0
2 Klopper ,PA (Phillippus Arnoldus) 3 1 -141.7 3 1 -141.7 0 0 0 0 0 0
1209.1 1067.4 1199.1 1067.4 0 0 0 0
3 Viljoen ,A (Amber) 3 2 141.7 3 2 141.7 0 0 0 0 0 0
1138.8 1280.5 1123.2 1280.5 0 0 0 0
4 Louw ,N (Nova) 3 3 425 3 3 425 0 0 0 0 0 0
1209.3 1634.3 1196.7 1634.3 0 0 0 0
5 Vermeulen ,T (Tiaan Leon) 3 0.5 -283.3 3 0.5 -283.3 0 0 0 0 0 0
1078.5 795.2 1080 795.2 0 0 0 0
6 Yang ,A (Alex) 3 0 -425 2 0 -425 1 0 -425 0 0 0
1234.8 809.8 1101.6 809.8 1200 809.8 0 0
7 Reyneke ,L (Luke) 3 0 -425 2 0 -425 1 0 -425 0 0 0
1378.3 953.3 1322.1 953.3 1200 953.3 0 0
8 Bogaard ,FK (Franco Konrad) 3 0 -425 2 0 -425 1 0 -425 0 0 0
1276.4 851.4 1241.6 851.4 907.8 851.4 0 0
9 De Waal ,N (Nadine) 2 0 -425 2 0 -425 0 0 0 0 0 0
1287.8 862.8 1264.6 862.8 0 0 0 0
10 Gounder ,A (Arun) 2 1 0 2 1 0 0 0 0 0 0 0
1245.9 1245.9 1263.3 1245.9 0 0 0 0

Norms

No norms achieved.
# Norm Tournament Start End Rounds Games Score Details
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