Surname or Chess SA id..
Chess SA Region AOC Mzansi 2026

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Schalk Coetzee

1110139746
Nelson Mandela Bay (ENM)
Personal
Main rating
Rating 1520
K-factor 32
Floor 1057.2
Highest 1585.5 (2024-07-01)
Min/Max +/- allowed 96
Rating Change
()
Games 9
Score 7
We 4.97
SWe 1.22
Temp +/- 39
Penalties 0
Weight perform 1622
Final +/- +95.7
New Rating
()
Rating 1615.7
K-factor 28
Floor 1115.7
Highest 1615.7 (2026-10-01)
Min/Max +/- allowed 91.7
Standard rating
Rating 1528.8
K-factor 32
Floor 1045.5
Highest 1562.1 (2024-08-01)
Min/Max +/- allowed 99
Rating Change
()
Games 6
Score 4
We 3.02
SWe 0.98
Temp +/- 31.4
Penalties 0
Weight perform 1573.6
Final +/- +44.8
New Rating
()
Rating 1573.6
K-factor 32
Floor 1073.6
Highest 1573.6 (2026-10-01)
Min/Max +/- allowed 97.4
Rapid rating
Rating 1436
K-factor 32
Floor 959.4
Highest 1516.4 (2024-07-01)
Min/Max +/- allowed 105.6
Rating Change
()
Games 3
Score 3
We 2.17
SWe 0.83
Temp +/- 26.6
Penalties 0
Weight perform 1518.2
Final +/- +82.3
New Rating
()
Rating 1518.2
K-factor 32
Floor 1018.2
Highest 1518.2 (2026-10-01)
Min/Max +/- allowed 105.4
Blitz rating
Rating 1298.5
K-factor 36
Floor 798.5
Highest 1298.5 (2025-04-01)
Min/Max +/- allowed 144.1
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1298.5
K-factor 36
Floor 798.5
Highest 1298.5 (2025-04-01)
Min/Max +/- allowed 144.1
Rating Graph
Tournaments
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 Eastern Cape Closed Championship 2026 (U16 Open) Standard 2026-09-25 2026-09-26 Sarah Baartman (ESB) 6 1520 6 4 1684.7 28.9 Details
2 Eastern Cape Chess Festival 2026 (Inter-Regionals U16) Rapid 2026-09-25 2026-09-25 Sarah Baartman (ESB) 4 1520 3 3 1798.9 10 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 NMB Closed 2026 (U16) Standard 2026-08-15 2026-08-15 Nelson Mandela Bay (ENM) 5 1520 5 3 1606.2 22.9 Details
2 UCC Championship 2026 (B) Standard 2026-07-21 2026-08-18 Nelson Mandela Bay (ENM) 5 1520 4 3 1559.2 13.2 Details
3 UCC Mind Over Board 2026 (A) Standard 2026-08-01 2026-08-01 Nelson Mandela Bay (ENM) 5 1520 5 3 1514.9 8.2 Details
4 UCC Rapid June 2026 Rapid 2026-06-16 2026-07-14 Nelson Mandela Bay (ENM) 6 1520 4 2 1415.6 -3 Details
5 Uitenhage Chess Club President Cup 2026 (A) Standard 2026-04-07 2026-05-26 Nelson Mandela Bay (ENM) 5 1469.7 4 2.5 1532.5 8 Details
6 Spartans Bishops 2026 (U16 Bishops) Standard 2026-05-01 2026-05-03 Sarah Baartman (ESB) 5 1469.7 4 2.5 1477.4 -1.1 Details
7 NMBCU Trials 5 2026 (U16) Standard 2026-05-15 2026-05-16 Nelson Mandela Bay (ENM) 6 1469.7 5 3 1400.5 -11.7 Details
8 NMBCU Trials 3 2026 (U16) Standard 2026-04-18 2026-04-18 Nelson Mandela Bay (ENM) 5 1487 5 2.5 1368 -17.3 Details
9 2026 NMBCU Trials 2 (U16) Standard 2026-03-06 2026-03-07 Nelson Mandela Bay (ENM) 6 1495.7 5 2 1432.8 -8.8 Details
10 Pearson Chess Festival 2026 (B) Standard 2026-02-27 2026-02-28 Nelson Mandela Bay (ENM) 5 1496.2 5 4 1471.9 -3 Details
11 UCC Protea Cup 2026 (A) Standard 2026-01-20 2026-02-17 Nelson Mandela Bay (ENM) 5 1496.2 5 3.5 1644.3 11.6 Details
12 NMBCU Trial 1 2026 (U16) Standard 2026-02-20 2026-02-21 Nelson Mandela Bay (ENM) 5 1496.2 5 3 1478.8 -2.3 Details
13 2025 Mzansi Individual Championships (U16 Open) Classical 2025-12-17 2025-12-20 Nelson Mandela Bay (ENM) 6 1506.5 6 2 1335 -24.2 Details
14 2025 Mzansi Inter Provincial Team Championships (U16 Open) Standard 2025-12-15 2025-12-17 Nelson Mandela Bay (ENM) 6 1506.5 6 2 1569.1 6.3 Details
15 UCC Royal Cup 2025 (A) Standard 2025-10-07 2025-11-05 Nelson Mandela Bay (ENM) 5 1495 3 2.5 1698.4 11.4 Details
16 UCC Rapid September 2025 Rapid 2025-09-09 2025-09-23 Nelson Mandela Bay (ENM) 6 1493.5 6 4 1578.3 4.4 Details
17 EC Closed 2025 (U16 Open) Standard 2025-09-06 2025-09-07 Nelson Mandela Bay (ENM) 6 1492.3 6 3.5 1585.6 12.4 Details
18 UCC Championship 2025 (A) Standard 2025-07-22 2025-08-19 Nelson Mandela Bay (ENM) 5 1499.4 5 1 1436.2 -6.4 Details
19 UCC Mind Over Board 2025 (A) Classical 2025-08-01 2025-08-03 Nelson Mandela Bay (ENM) 5 1499.4 5 2 1344.6 -17.2 Details
20 UCC Rapid July 2025 Rapid 2025-07-08 2025-07-15 Nelson Mandela Bay (ENM) 6 1500.8 6 4.5 1650.3 6.7 Details
21 Eastern Cape Inter-Regional Individual Chess Championship 2025 (U16 Open) Standard 2025-07-11 2025-07-12 Amathole (EAL) 6 1500.8 6 3.5 1476 -2.8 Details
22 Eastern Cape Inter-Regional Team Chess Championship 2025 (U16) Standard 2025-07-10 2025-07-11 Amathole (EAL) 5 1500.8 4 2 1438.7 -4.8 Details
23 UCC Rapid May 2025 Rapid 2025-05-27 2025-06-17 Nelson Mandela Bay (ENM) 6 1521.9 6 4 1479.1 -2.5 Details
24 NMBCU Closed 2025 (U16) Standard 2025-06-13 2025-06-14 Nelson Mandela Bay (ENM) 6 1521.9 6 3.5 1428.7 -10.8 Details
25 NMBCU Open 2025 (B) Standard 2025-05-23 2025-05-24 Nelson Mandela Bay (ENM) 6 1476 6 4.5 1684.4 25.1 Details
26 NMBCU Trial 4 2025 (U16) Standard 2025-05-09 2025-05-10 Nelson Mandela Bay (ENM) 6 1476 5 2.5 1412.9 -5.5 Details
27 UCC Presidential Cup 2025 (A) Standard 2025-04-08 2025-05-06 Nelson Mandela Bay (ENM) 5 1476 5 3 1586.7 8.9 Details
28 NMB 3rd Trials 2025 (U16) Standard 2025-04-11 2025-04-12 Nelson Mandela Bay (ENM) 6 1487.8 6 3 1302.3 -21.6 Details
29 UCC Rapid Mar/Apr 2025 Rapid 2025-03-18 2025-04-01 Nelson Mandela Bay (ENM) 6 1487.8 4 3 1526.1 1.6 Details
30 UCC Blitz March 2025 Blitz 2025-03-04 2025-03-11 Nelson Mandela Bay (ENM) 6 1489.9 6 4 1580.1 2.7 Details
31 NMB 2nd Trials 2025 (U16) Standard 2025-03-07 2025-03-08 Nelson Mandela Bay (ENM) 6 1489.9 5 4 1549.7 5.5 Details
32 UCC Strategic Moves 2025 (A) Standard 2025-02-28 2025-03-01 Nelson Mandela Bay (ENM) 5 1489.9 5 2.5 1405 -9.4 Details
33 Uitenhage Chess Club Protea Cup 2025 (A) Standard 2025-01-28 2025-02-25 Nelson Mandela Bay (ENM) 5 1509.8 3 1.5 1500.6 -2.7 Details
34 NMBCH Trial 1 2025 (U16) Standard 2025-02-14 2025-02-15 Nelson Mandela Bay (ENM) 6 1509.8 6 3.5 1424.2 -9.8 Details
35 NMBCU vs BCC Derby Chess Invitational 2025 (U14) Standard 2025-01-10 2025-01-11 Nelson Mandela Bay (ENM) 5 1514.9 5 2 1486.2 -3.6 Details
36 NMBCU vs BCC Derby Chess Invitational 2025 (Blitz Open A) Blitz 2025-01-12 2025-01-12 Nelson Mandela Bay (ENM) 9 1514.9 9 5.5 1522.8 0.5 Details
37 Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Championship) Classical 2024-12-16 2024-12-19 Capricorn (LCP) 7 1513.3 7 4 1524.5 1.2 Details
38 UCC Club Champs 2024 (A) Standard 2024-10-08 2024-11-05 Nelson Mandela Bay (ENM) 5 1538.1 2 0 1117.1 -15.5 Details
39 George Suid Senior Skaaktoernooi 2024 Rapid 2024-10-26 2024-10-26 Eden (WEG) 5 1535.5 5 3.5 1620.2 5.2 Details
40 NMBCU Top Schools Final 2024 (Primary School) Standard 2024-10-19 2024-10-29 Nelson Mandela Bay (ENM) 3 1535.5 3 2 1618.4 4.1 Details
41 NMBCU Top Schools 2024 (Senior Primary) Rapid 2024-10-12 2024-10-12 Nelson Mandela Bay (ENM) 5 1535.5 5 3 1451.9 -7.7 Details
42 NMBCU Closed 2024 (U14) Standard 2024-09-20 2024-09-21 Nelson Mandela Bay (ENM) 6 1557.2 6 4.5 1591.6 4.4 Details
43 2024 UCC Mind Over Board (B) Classical 2024-08-30 2024-09-01 Nelson Mandela Bay (ENM) 5 1557.2 5 3.5 1393.3 -18 Details
44 NMBCU Trial 5 2024 (U14) Standard 2024-08-16 2024-08-17 Nelson Mandela Bay (ENM) 6 1550.5 6 5 1670.2 14.3 Details
45 UCC Royal Cup Classic July 2024 (A) Standard 2024-07-09 2024-08-06 Nelson Mandela Bay (ENM) 5 1550.5 4 2.5 1420.8 -10.1 Details
46 NMBCU Trials 4 2024 (U14) Standard 2024-07-12 2024-07-13 Nelson Mandela Bay (ENM) 6 1520.5 6 4.5 1632.2 15.4 Details
47 Uitenhage Chess Club Rapid June 2024 Rapid 2024-06-18 2024-07-02 Nelson Mandela Bay (ENM) 6 1520.5 2 2 1659.1 3.3 Details
48 Uitenhage Chess Club Presidential Cup 2024 (B) Rapid 2024-04-30 2024-05-14 Nelson Mandela Bay (ENM) 6 1509.4 6 5.5 1584.5 6.9 Details
49 NMBCU Trial 3 2024 (U14) Standard 2024-05-10 2024-05-11 Nelson Mandela Bay (ENM) 6 1450.2 6 4.5 1636.7 21.7 Details
50 UCC Rapid April 2024 Rapid 2024-04-09 2024-04-23 Nelson Mandela Bay (ENM) 6 1409.8 4 4 1750.4 13.6 Details
Game statistics ( )
Games 0
Wins 0
Draws 0
Losses 0
White 0
Black 0
White wins 0
Black wins 0
Score 0
Percent 0
Dp 0
AOR 0
Performance 0
Game statistics ()
Games 65
Wins 33
Draws 16
Losses 16
White 37
Black 28
White wins 19
Black wins 14
Score 41
Percent 63.1
Dp 111.2
AOR 1412.4
Performance 1523.5
Game statistics (History)
Games 412
Wins 210
Draws 78
Losses 124
White 202
Black 210
White wins 98
Black wins 112
Score 249
Percent 60.4
Dp 88.7
AOR 1368.3
Performance 1457
Rankings (Main)
National
Overall 1777
Gender 1574
Age group 194
Gender/Age 160
Provincial
Overall 192
Gender 168
Age group 31
Gender/Age 27
Regional
Overall 79
Gender 70
Age group 14
Gender/Age 13
Rankings (Standard)
National
Overall 1521
Gender 1341
Age group 174
Gender/Age 144
Provincial
Overall 167
Gender 148
Age group 29
Gender/Age 26
Regional
Overall 66
Gender 58
Age group 13
Gender/Age 12
Rankings (Rapid)
National
Overall 730
Gender 648
Age group 109
Gender/Age 89
Provincial
Overall 64
Gender 57
Age group 14
Gender/Age 11
Regional
Overall 19
Gender 19
Age group 5
Gender/Age 5
Rankings (Blitz)
National
Overall 342
Gender 328
Age group 34
Gender/Age 31
Provincial
Overall 33
Gender 33
Age group 8
Gender/Age 8
Regional
Overall 23
Gender 23
Age group 6
Gender/Age 6
Performance ( )
Games 0
Score 0
Percent 0
Aor 0
Dp 0
Prat 0
Performance ()
Games 65
Score 41
Percent 63.1
Aor 1412.4
Dp 111.2
Prat 1523.5
Performance (12 months)
Games 80
Score 47.5
Percent 59.4
Aor 1439.7
Dp 79.7
Prat 1519.4
Performance (History)
Games 412
Score 249
Percent 60.4
Aor 1368.3
Dp 88.7
Prat 1457
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Hall, J (Joshua) 11 7 4 Uitenhage Chess Club RAPID III 2023 Uitenhage Chess Club President Cup 2026 (A) Details
Overall 2 Clainos, S (Spiro) 11 6 5 2022 NMB Junior Trials 2 (U12) 2025 Mzansi Individual Championships (U16 Open) Details
Overall 3 Strydom, JP (Jean-Pierre) 10 5 5 Uitenhage Chess Club Inaugural Rapid Tournament 2023 UCC Mind Over Board 2026 (A) Details
Overall 4 Banda, B (Benjamin) 8 6 2 2022 NMB Junior Trials 1 (U12) NMB Closed 2026 (U16) Details
Overall 5 Chipunza, J (Jared) 8 5 3 NMBCU Trial 3 2022 (U12) Eastern Cape Inter-Regional Team Chess Championship 2025 (U16) Details
Standard 1 Clainos, S (Spiro) 11 6 5 2022 NMB Junior Trials 2 (U12) 2025 Mzansi Individual Championships (U16 Open) Details
Standard 2 Banda, B (Benjamin) 8 6 2 2022 NMB Junior Trials 1 (U12) NMB Closed 2026 (U16) Details
Standard 3 Hall, J (Joshua) 7 4 3 UCC Royal Cup Classic July 2024 (A) Uitenhage Chess Club President Cup 2026 (A) Details
Standard 4 Chipunza, J (Jared) 7 4 3 NMBCU Trial 3 2022 (U12) Eastern Cape Inter-Regional Team Chess Championship 2025 (U16) Details
Standard 5 Kapp, S (Sebastian) 6 4 2 NMBCU Trial 3 2022 (U12) 2026 NMBCU Trials 2 (U16) Details
Rapid 1 Strydom, JP (Jean-Pierre) 5 2 3 Uitenhage Chess Club Inaugural Rapid Tournament 2023 UCC Rapid May 2025 Details
Rapid 2 Hall, J (Joshua) 4 3 1 Uitenhage Chess Club RAPID III 2023 UCC Rapid September 2025 Details
Rapid 3 Schler, J (Jayden) 3 2 1 Uitenhage Chess Club RAPID III 2023 UCC Rapid April 2024 Details
Rapid 4 Van Huyssteen, H (Hermanus) 2 0 2 UCC Rapid July 2025 UCC Rapid September 2025 Details
Rapid 5 Tiry, MH (Muhammad Hasan) 2 1 1 UCC Rapid May 2025 UCC Rapid June 2026 Details