PLAYER PAGE
Personal

Kotzenmacher, L (Leo)
Chess SA id
1130301077FIDE id
?Date of birth
2013-06-13 (U14)Gender
MaleRegion
Johannesburg Metro (GJM)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-08-31Personal details last changed
1900-01-01Junior GPX Games
59Junior GPX Points
1330.6Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
Rating | 1423.3 | 1418.5 | 1200 | 1200 |
Raw rating | 1423.3 | 1418.5 | 1200 | 1200 |
Weighted rating | 1244.5 | 1236.3 | 1200 | 1200 |
Weighted performance | 1331.3 | 1326.5 | 0 | 0 |
Floor | 928.6 | 924.5 | 700 | 700 |
K-factor | 32 | 32 | 36 | 36 |
Min/Max rating change allowed | 120.6 | 121.5 | 165.8 | 165.8 |
Highest rating | 1428.62025-09-01 | 1424.52025-09-01 | 12002024-04-01 | 12002024-04-01 |
Highest raw rating | 1428.62025-09-01 | 1424.52025-09-01 | 12002024-04-01 | 12002024-04-01 |
Highest weighted rating | 1420.12024-11-01 | 1415.42024-11-01 | 12002024-04-01 | 12002024-04-01 |
Highest weighted performance | 1420.12025-07-01 | 1415.42024-12-01 | 12002024-04-01 | 12002024-04-01 |
Prediction | ||||
---|---|---|---|---|
Item | Main | Standard | Rapid | Blitz |
Rating change | 0 | 0 | 0 | 0 |
New rating | 1423.3 | 1418.5 | 1200 | 1200 |
Analysis | ||||
Rating | 1423.3 | 1418.5 | 1200 | 1200 |
Raw rating | 1423.3 | 1418.5 | 1200 | 1200 |
Weighted rating | 1244.5 | 1236.3 | 1200 | |
Weighted performance | 1331.3 | 1326.5 | 0 | |
K-factor | 32 | 32 | 36 | 36 |
Floor | 928.6 | 924.5 | 700 | 700 |
Max/Min rating change allowed | 120.6 | 121.5 | 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 | 1423.3 | 1418.5 | 1200 | 1200 |
New weighted rating | 1262.1 | 1254.3 | 1200 | 1200 |
New weighted performance | 1330.8 | 1326.1 | 0 | 0 |
Temp new rating | 1423.3 | 1418.5 | 1200 | 1200 |
Temp new rating +/- | 0 | 0 | 0 | 0 |
Final new rating +/- | 0 | 0 | 0 | 0 |
New rating | 1423.3 | 1418.5 | 1200 | 1200 |
New K-factor | 32 | 32 | 36 | 36 |
New floor | 928.6 | 924.5 | 700 | 700 |
Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
0 | 0 | 0 | 0 | |
59 | 59 | 0 | 0 | |
34 | 34 | 0 | 0 | |
0 | 0 | 0 | 0 | |
0 | 0 | 0 | 0 | |
0 | 0 | 0 | 0 | |
History | 93 | 93 | 0 | 0 |
Games since | |||||||||||||||||
Main93 | Standard93 | Rapid0 | Blitz0 | ||||||||||||||
Gender | Male | ||||||||||||||||
Age group | U14 | ||||||||||||||||
Region | Johannesburg Metro (GJM) | ||||||||||||||||
Province | Gauteng (GT) | ||||||||||||||||
Main | RSA | Province | Region | ||||||||||||||
Overall | 1933 | 681 | 223 | ||||||||||||||
Male | 1614 | 559 | 186 | ||||||||||||||
U14 | 295 | 101 | 29 | ||||||||||||||
U14 Male | 225 | 75 | 22 | ||||||||||||||
Standard | RSA | Province | Region | ||||||||||||||
Overall | 1866 | 697 | 218 | ||||||||||||||
Male | 1538 | 568 | 181 | ||||||||||||||
U14 | 299 | 102 | 28 | ||||||||||||||
U14 Male | 223 | 76 | 21 | ||||||||||||||
Rapid | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U14 | -1 | -1 | -1 | ||||||||||||||
U14 Male | -1 | -1 | -1 | ||||||||||||||
Blitz | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U14 | -1 | -1 | -1 | ||||||||||||||
U14 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 | 59 | 34.5 | 58.47 | 72 | 1281.9 | 1354 |
Standard | 59 | 34.5 | 58.47 | 72 | 1281.9 | 1354 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
History | ||||||
Games | Score | % | Dp | AvgOpp | Performance | |
Main | 93 | 42.5 | 45.7 | -36.6 | 1264.2 | 1227.7 |
Standard | 93 | 42.5 | 45.7 | -36.6 | 1264.2 | 1227.7 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
Date | Main | Standard | Rapid | Blitz |
2025-09-30 | 1423.3 | 1418.5 | 1200 | 1200 |
2025-09-01 | 1428.6 | 1424.5 | 1200 | 1200 |
2025-08-01 | 1420.1 | 1415.4 | 1200 | 1200 |
2025-07-01 | 1420.1 | 1415.4 | 1200 | 1200 |
2025-06-01 | 1310.6 | 1305.3 | 1200 | 1200 |
2025-05-01 | 1289.1 | 1285 | 1200 | 1200 |
2025-04-01 | 1289.1 | 1285 | 1200 | 1200 |
2025-03-01 | 1309.4 | 1309.2 | 1200 | 1200 |
2025-02-01 | 1116.2 | 1105.6 | 1200 | 1200 |
2025-01-01 | 1062.7 | 1055.2 | 1200 | 1200 |
2024-12-01 | 1062.7 | 1055.2 | 1200 | 1200 |
2024-11-01 | 1062.7 | 1055.2 | 1200 | 1200 |
2024-10-01 | 1062.7 | 1055.2 | 1200 | 1200 |
2024-09-01 | 1059 | 1047.6 | 1200 | 1200 |
2024-08-01 | 1047.6 | 1019.6 | 1200 | 1200 |
2024-07-01 | 1080.8 | 1054.4 | 1200 | 1200 |
2024-06-01 | 1145.9 | 1120.8 | 1200 | 1200 |
2024-08-01 | 1145.9 | 1120.8 | 1200 | 1200 |
2024-04-01 | 1135.9 | 1105.6 | 1200 | 1200 |
2024-03-01 | 1200 | 1200 | 1200 | 1200 |
2024-02-01 | 1200 | 1200 | 1200 | 1200 |
2024-01-01 | 1200 | 1200 | 1200 | 1200 |
2023-12-01 | 1200 | 1200 | 1200 | 1200 |
2023-11-01 | 1200 | 1200 | 1200 | 1200 |
Comming soon.
Tournaments
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|---|---|---|---|---|---|---|---|---|---|
1 | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | 2025-08-31 | 2025-08-31 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
2 | JMC Closed 2025 (U14) | 2025-08-09 | 2025-08-10 | Standard | Johannesburg Metro (GJM) | 5 | 3 | 2 | Yes | Analysis |
3 | Third Knight Riders Junior Open 2025 (B+C) | 2025-06-22 | 2025-06-22 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2.5 | Yes | Analysis |
4 | JCC Steyn City High Schools League 2025 (A) | 2025-05-07 | 2025-06-09 | Standard | Johannesburg Metro (GJM) | 6 | 1 | 1 | Yes | Analysis |
5 | Knight Riders Juniors Open Chess Tournament 2025 (C) | 2025-05-25 | 2025-05-25 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2.5 | Yes | Analysis |
6 | Moja Chess Extravaganza 2025 (U14) | 2025-04-26 | 2025-04-28 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2 | Yes | Analysis |
7 | JMC Crawford Sandton 2025 (C) | 2025-05-10 | 2025-05-10 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
8 | 2nd Knight Riders Junior Open 2025 (C) | 2025-03-23 | 2025-03-23 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
9 | JCC - Dainfern Chess League 2025 (A) | 2025-02-03 | 2025-03-17 | Standard | Johannesburg Metro (GJM) | 6 | 5 | 2 | Yes | Analysis |
10 | JMC Crawford Ruimsig 2025 (D) | 2025-03-01 | 2025-03-01 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
11 | Knight Riders Open Chess Tournament 2025 (C) | 2025-02-22 | 2025-02-22 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
12 | First Knights Juniors Chess Tournament 2025 (D) | 2025-02-09 | 2025-02-09 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 4.5 | Yes | Analysis |
13 | JMC Kick Off 2025 (D) | 2025-02-02 | 2025-02-02 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|---|---|---|---|---|---|---|---|---|---|
1 | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | 2025-08-31 | 2025-08-31 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
2 | JMC Closed 2025 (U14) | 2025-08-09 | 2025-08-10 | Standard | Johannesburg Metro (GJM) | 5 | 3 | 2 | Yes | Analysis |
3 | Third Knight Riders Junior Open 2025 (B+C) | 2025-06-22 | 2025-06-22 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2.5 | Yes | Analysis |
4 | JCC Steyn City High Schools League 2025 (A) | 2025-05-07 | 2025-06-09 | Standard | Johannesburg Metro (GJM) | 6 | 1 | 1 | Yes | Analysis |
5 | Knight Riders Juniors Open Chess Tournament 2025 (C) | 2025-05-25 | 2025-05-25 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2.5 | Yes | Analysis |
6 | Moja Chess Extravaganza 2025 (U14) | 2025-04-26 | 2025-04-28 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2 | Yes | Analysis |
7 | JMC Crawford Sandton 2025 (C) | 2025-05-10 | 2025-05-10 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
8 | 2nd Knight Riders Junior Open 2025 (C) | 2025-03-23 | 2025-03-23 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
9 | JCC - Dainfern Chess League 2025 (A) | 2025-02-03 | 2025-03-17 | Standard | Johannesburg Metro (GJM) | 6 | 5 | 2 | Yes | Analysis |
10 | JMC Crawford Ruimsig 2025 (D) | 2025-03-01 | 2025-03-01 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
11 | Knight Riders Open Chess Tournament 2025 (C) | 2025-02-22 | 2025-02-22 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
12 | First Knights Juniors Chess Tournament 2025 (D) | 2025-02-09 | 2025-02-09 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 4.5 | Yes | Analysis |
13 | JMC Kick Off 2025 (D) | 2025-02-02 | 2025-02-02 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
14 | Knight Riders Spring Chess Tournament 2024 (D) | 2024-09-28 | 2024-09-28 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 1.5 | Yes | Analysis |
15 | JMC Closed 2024 (D) | 2024-08-09 | 2024-08-11 | Standard | Johannesburg Metro (GJM) | 5 | 4 | 0 | Yes | Analysis |
16 | Fourth Knight Riders Juniors Open Chess Tournament 204 (D) | 2024-08-03 | 2024-08-03 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
17 | Chess Power House July Open 2024 (C) | 2024-07-20 | 2024-07-20 | Standard | Johannesburg Metro (GJM) | 5 | 4 | 0 | Yes | Analysis |
18 | Second Knight Riders Juniors Open Chess Tournament 2024 (C) | 2024-06-08 | 2024-06-08 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2 | Yes | Analysis |
19 | JCC Steyn City High Schools League 2024 (A) | 2024-05-11 | 2024-05-25 | Standard | Johannesburg Metro (GJM) | 6 | 2 | 0 | Yes | Analysis |
20 | JCC Steyn City High Schools League 2024 (B) | 2024-05-11 | 2024-05-25 | Standard | Johannesburg Metro (GJM) | 6 | 3 | 0.5 | Yes | Analysis |
21 | Dainfern College Chess League 2024 (B) | 2024-01-29 | 2024-03-11 | Standard | Johannesburg Metro (GJM) | 6 | 2 | 1 | Yes | Analysis |
22 | 1st Knights Open Tournament 2024 (D) | 2024-03-23 | 2024-03-23 | Standard | Johannesburg Metro (GJM) | 5 | 4 | 0 | Yes | Analysis |
Top 3 Streaks
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentJMC Kick Off 2025 | TournamentFirst Knights Juniors Chess Tournament 2025 | ||||||
date2025-02-02 | rnd5 | typeStandard | result1 | date2025-02-09 | rnd5 | typeStandard | result1 | ||
OpponentGadney, L (Liam) | OpponentBotha, R (Ruan) | ||||||||
2 | 5 | TournamentJMC Crawford Sandton 2025 | TournamentKnight Riders Juniors Open Chess Tournament 2025 | ||||||
date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-25 | rnd1 | typeStandard | result1 | ||
OpponentFerreira, D (Daniela) | OpponentLala, K (Kiyaan) | ||||||||
3 | 3 | TournamentThird Knight Riders Junior Open 2025 | TournamentJMC Closed 2025 | ||||||
date2025-06-22 | rnd4 | typeStandard | result0.5 | date2025-08-09 | rnd1 | typeStandard | result1 | ||
OpponentFinnemore, E (Ewan) | OpponentSteyl, J (Juan) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentJMC Kick Off 2025 | TournamentFirst Knights Juniors Chess Tournament 2025 | ||||||
date2025-02-02 | rnd5 | typeStandard | result1 | date2025-02-09 | rnd5 | typeStandard | result1 | ||
OpponentGadney, L (Liam) | OpponentBotha, R (Ruan) | ||||||||
2 | 5 | TournamentJMC Crawford Sandton 2025 | TournamentKnight Riders Juniors Open Chess Tournament 2025 | ||||||
date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-25 | rnd1 | typeStandard | result1 | ||
OpponentFerreira, D (Daniela) | OpponentLala, K (Kiyaan) | ||||||||
3 | 3 | TournamentThird Knight Riders Junior Open 2025 | TournamentJMC Closed 2025 | ||||||
date2025-06-22 | rnd4 | typeStandard | result0.5 | date2025-08-09 | rnd1 | typeStandard | result1 | ||
OpponentFinnemore, E (Ewan) | OpponentSteyl, J (Juan) |
# | Games | Start | End |
---|
# | Games | Start | End |
---|
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 5 | TournamentJMC Crawford Sandton 2025 | TournamentKnight Riders Juniors Open Chess Tournament 2025 | ||||||
date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-25 | rnd1 | typeStandard | result1 | ||
OpponentFerreira, D (Daniela) | OpponentLala, K (Kiyaan) | ||||||||
2 | 3 | TournamentFirst Knights Juniors Chess Tournament 2025 | TournamentFirst Knights Juniors Chess Tournament 2025 | ||||||
date2025-02-09 | rnd3 | typeStandard | result1 | date2025-02-09 | rnd5 | typeStandard | result1 | ||
OpponentKutumela, B (Bokang) | OpponentBotha, R (Ruan) | ||||||||
3 | 3 | TournamentJMC Kick Off 2025 | TournamentFirst Knights Juniors Chess Tournament 2025 | ||||||
date2025-02-02 | rnd5 | typeStandard | result1 | date2025-02-09 | rnd1 | typeStandard | result1 | ||
OpponentGadney, L (Liam) | OpponentManalavan, J (Jacob) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 5 | TournamentJMC Crawford Sandton 2025 | TournamentKnight Riders Juniors Open Chess Tournament 2025 | ||||||
date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-25 | rnd1 | typeStandard | result1 | ||
OpponentFerreira, D (Daniela) | OpponentLala, K (Kiyaan) | ||||||||
2 | 3 | TournamentFirst Knights Juniors Chess Tournament 2025 | TournamentFirst Knights Juniors Chess Tournament 2025 | ||||||
date2025-02-09 | rnd3 | typeStandard | result1 | date2025-02-09 | rnd5 | typeStandard | result1 | ||
OpponentKutumela, B (Bokang) | OpponentBotha, R (Ruan) | ||||||||
3 | 3 | TournamentJMC Kick Off 2025 | TournamentFirst Knights Juniors Chess Tournament 2025 | ||||||
date2025-02-02 | rnd5 | typeStandard | result1 | date2025-02-09 | rnd1 | typeStandard | result1 | ||
OpponentGadney, L (Liam) | OpponentManalavan, J (Jacob) |
# | Games | Start | End |
---|
# | 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 | Chauke ,N (Nokukhanya) | 4 | 4 | 425 | 4 | 4 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1050.7 | 1475.7 | 1041.6 | 1475.7 | 0 | 0 | 0 | 0 | ||||||
2 | Maduna ,A (Asanda) | 3 | 2 | 141.7 | 3 | 2 | 141.7 | 0 | 0 | 0 | 0 | 0 | 0 |
1147.6 | 1289.3 | 1133.9 | 1289.3 | 0 | 0 | 0 | 0 | ||||||
3 | Julius ,J (Joshua) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1199.8 | 1624.8 | 1199.8 | 1624.8 | 0 | 0 | 0 | 0 | ||||||
4 | Steyn ,K (Kian) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1608.2 | 1183.2 | 1593 | 1183.2 | 0 | 0 | 0 | 0 | ||||||
5 | Mankena ,S (Satvik Ram) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1609.8 | 1184.8 | 1598.5 | 1184.8 | 0 | 0 | 0 | 0 | ||||||
6 | Mkulisi ,B (Baphiwe) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1153.8 | 728.8 | 1144.2 | 728.8 | 0 | 0 | 0 | 0 | ||||||
7 | Forshaw ,C (Chloe) | 2 | 1.5 | 212.5 | 2 | 1.5 | 212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
1184.5 | 1397 | 1181.4 | 1397 | 0 | 0 | 0 | 0 | ||||||
8 | Mahale ,A (Agastya) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1220.2 | 795.2 | 1217.6 | 795.2 | 0 | 0 | 0 | 0 | ||||||
9 | Sibeko ,E (Emihle) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1286.7 | 861.7 | 1160 | 861.7 | 0 | 0 | 0 | 0 | ||||||
10 | Mohlala ,T (Tshepang) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1258.6 | 833.6 | 1269.4 | 833.6 | 0 | 0 | 0 | 0 |
Norms
# | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
---|---|---|---|---|---|---|---|---|