PLAYER PAGE
Leo Kotzenmacher
1130301077Johannesburg Metro (GJM)Personal
Main rating
| Rating | 1375.5 |
| K-factor | 32 |
| Floor | 930.7 |
| Highest | 1430.7 (2025-11-30) |
| Min/Max +/- allowed | 119 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1324.3 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1375.5 |
| K-factor | 32 |
| Floor | 930.7 |
| Highest | 1430.7 (2025-11-30) |
| Min/Max +/- allowed | 119.4 |
Standard rating
| Rating | 1367.3 |
| K-factor | 32 |
| Floor | 928.7 |
| Highest | 1428.7 (2025-11-30) |
| Min/Max +/- allowed | 119.7 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1324.3 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1367.3 |
| K-factor | 32 |
| Floor | 928.7 |
| Highest | 1428.7 (2025-11-30) |
| Min/Max +/- allowed | 119.7 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-04-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-04-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-04-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-04-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 JMC Kick off Tournament (C) | Standard | 2026-02-01 | 2026-02-01 | Johannesburg Metro (GJM) | 5 | 1390.6 | 3 | 1 | 1236.8 | 0 | Details |
| 2 | First Knight Riders Juniors Open Chess Tournament 2026 (C) | Standard | 2026-01-17 | 2026-01-17 | Johannesburg Metro (GJM) | 5 | 1392 | 5 | 2.5 | 1390 | 0 | Details |
| 3 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1430.5 | 5 | 2.5 | 1217 | 0 | Details |
| 4 | JCC St Davids Marist Schools League 2025 (A) | Standard | 2025-09-08 | 2025-10-27 | Johannesburg Metro (GJM) | 6 | 1423.2 | 5 | 4 | 1489.1 | 0 | Details |
| 5 | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | Standard | 2025-08-31 | 2025-08-31 | Johannesburg Metro (GJM) | 5 | 1428.6 | 5 | 3 | 1399.9 | 0 | Details |
| 6 | JMC Closed 2025 (U14) | Standard | 2025-08-09 | 2025-08-10 | Johannesburg Metro (GJM) | 5 | 1420.1 | 3 | 2 | 1487.1 | 0 | Details |
| 7 | Third Knight Riders Junior Open 2025 (B+C) | Standard | 2025-06-22 | 2025-06-22 | Johannesburg Metro (GJM) | 5 | 1310.6 | 5 | 2.5 | 1390.6 | 0 | Details |
| 8 | JCC Steyn City High Schools League 2025 (A) | Standard | 2025-05-07 | 2025-06-09 | Johannesburg Metro (GJM) | 6 | 1310.6 | 1 | 1 | 1624.9 | 0 | Details |
| 9 | Knight Riders Juniors Open Chess Tournament 2025 (C) | Standard | 2025-05-25 | 2025-05-25 | Johannesburg Metro (GJM) | 5 | 1289.1 | 5 | 2.5 | 1310.4 | 0 | Details |
| 10 | Moja Chess Extravaganza 2025 (U14) | Classical | 2025-04-26 | 2025-04-28 | Johannesburg Metro (GJM) | 5 | 1289.1 | 5 | 2 | 1197.2 | 0 | Details |
| 11 | JMC Crawford Sandton 2025 (C) | Standard | 2025-05-10 | 2025-05-10 | Johannesburg Metro (GJM) | 5 | 1289.1 | 5 | 3 | 1460 | 0 | Details |
| 12 | 2nd Knight Riders Junior Open 2025 (C) | Standard | 2025-03-23 | 2025-03-23 | Johannesburg Metro (GJM) | 5 | 1309.4 | 5 | 3 | 1374.9 | 0 | Details |
| 13 | JCC - Dainfern Chess League 2025 (A) | Standard | 2025-02-03 | 2025-03-17 | Johannesburg Metro (GJM) | 6 | 1309.4 | 5 | 2 | 1122.3 | 0 | Details |
| 14 | JMC Crawford Ruimsig 2025 (D) | Standard | 2025-03-01 | 2025-03-01 | Johannesburg Metro (GJM) | 5 | 1309.4 | 5 | 3 | 1286.5 | 0 | Details |
| 15 | Knight Riders Open Chess Tournament 2025 (C) | Standard | 2025-02-22 | 2025-02-22 | Johannesburg Metro (GJM) | 5 | 1116.2 | 5 | 3 | 1368.2 | 0 | Details |
| 16 | First Knights Juniors Chess Tournament 2025 (D) | Standard | 2025-02-09 | 2025-02-09 | Johannesburg Metro (GJM) | 5 | 1116.2 | 5 | 4.5 | 1525.1 | 0 | Details |
| 17 | JMC Kick Off 2025 (D) | Standard | 2025-02-02 | 2025-02-02 | Johannesburg Metro (GJM) | 5 | 1116.2 | 5 | 3 | 1324.5 | 0 | Details |
| 18 | Knight Riders Spring Chess Tournament 2024 (D) | Standard | 2024-09-28 | 2024-09-28 | Johannesburg Metro (GJM) | 5 | 1059 | 5 | 1.5 | 1073.8 | 0 | Details |
| 19 | JMC Closed 2024 (D) | Standard | 2024-08-09 | 2024-08-11 | Johannesburg Metro (GJM) | 5 | 1047.6 | 4 | 0 | 845.7 | 0 | Details |
| 20 | Fourth Knight Riders Juniors Open Chess Tournament 204 (D) | Standard | 2024-08-03 | 2024-08-03 | Johannesburg Metro (GJM) | 5 | 1047.6 | 5 | 3 | 1313.1 | 0 | Details |
| 21 | Chess Power House July Open 2024 (C) | Standard | 2024-07-20 | 2024-07-20 | Johannesburg Metro (GJM) | 5 | 1080.8 | 4 | 0 | 871.6 | 0 | Details |
| 22 | Second Knight Riders Juniors Open Chess Tournament 2024 (C) | Standard | 2024-06-08 | 2024-06-08 | Johannesburg Metro (GJM) | 5 | 1145.9 | 5 | 2 | 1097 | 0 | Details |
| 23 | JCC Steyn City High Schools League 2024 (A) | Standard | 2024-05-11 | 2024-05-25 | Johannesburg Metro (GJM) | 6 | 1145.9 | 2 | 0 | 809.1 | 0 | Details |
| 24 | JCC Steyn City High Schools League 2024 (B) | Standard | 2024-05-11 | 2024-05-25 | Johannesburg Metro (GJM) | 6 | 1145.9 | 3 | 0.5 | 922.1 | 0 | Details |
| 25 | Dainfern College Chess League 2024 (B) | Standard | 2024-01-29 | 2024-03-11 | Johannesburg Metro (GJM) | 6 | 1135.9 | 2 | 1 | 1229.3 | 0 | Details |
| 26 | 1st Knights Open Tournament 2024 (D) | Standard | 2024-03-23 | 2024-03-23 | Johannesburg Metro (GJM) | 5 | 1200 | 4 | 0 | 788.8 | 0 | 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 | 8 |
| Wins | 2 |
| Draws | 3 |
| Losses | 3 |
| White | 5 |
| Black | 3 |
| White wins | 1 |
| Black wins | 1 |
| Score | 3.5 |
| Percent | 43.8 |
| Dp | -53.1 |
| AOR | 1385.7 |
| Performance | 1332.6 |
Game statistics (History)
| Games | 111 |
| Wins | 47 |
| Draws | 11 |
| Losses | 53 |
| White | 60 |
| Black | 51 |
| White wins | 24 |
| Black wins | 23 |
| Score | 52.5 |
| Percent | 47.3 |
| Dp | -23 |
| AOR | 1269.5 |
| Performance | 1246.5 |
Rankings (Main)
| National | |
| Overall | 3818 |
| Gender | 3212 |
| Age group | 447 |
| Gender/Age | 326 |
| Provincial | |
| Overall | 1306 |
| Gender | 1092 |
| Age group | 140 |
| Gender/Age | 106 |
| Regional | |
| Overall | 399 |
| Gender | 350 |
| Age group | 44 |
| Gender/Age | 38 |
Rankings (Standard)
| National | |
| Overall | 3589 |
| Gender | 3010 |
| Age group | 429 |
| Gender/Age | 311 |
| Provincial | |
| Overall | 1274 |
| Gender | 1065 |
| Age group | 144 |
| Gender/Age | 106 |
| Regional | |
| Overall | 367 |
| Gender | 319 |
| Age group | 43 |
| Gender/Age | 37 |
Rankings (Rapid)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Rankings (Blitz)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Performance ( )
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 8 |
| Score | 3.5 |
| Percent | 43.8 |
| Aor | 1385.7 |
| Dp | -53.1 |
| Prat | 1332.6 |
Performance (12 months)
| Games | 57 |
| Score | 31 |
| Percent | 54.4 |
| Aor | 1305.8 |
| Dp | 37.3 |
| Prat | 1343.1 |
Performance (History)
| Games | 111 |
| Score | 52.5 |
| Percent | 47.3 |
| Aor | 1269.5 |
| Dp | -23 |
| Prat | 1246.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Chauke, N (Nokukhanya) | 4 | 1 | 3 | Knight Riders Open Chess Tournament 2025 (C) | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | Details |
| Overall | 2 | Maduna, A (Asanda) | 3 | 1 | 2 | Fourth Knight Riders Juniors Open Chess Tournament 204 (D) | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | Details |
| Overall | 3 | Chikwava, R (Ronald) | 3 | 3 | 0 | JMC Crawford Ruimsig 2025 (D) | First Knight Riders Juniors Open Chess Tournament 2026 (C) | Details |
| Overall | 4 | Bester, J (Johannes) | 2 | 1 | 1 | First Knights Juniors Chess Tournament 2025 (D) | First Knight Riders Juniors Open Chess Tournament 2026 (C) | Details |
| Overall | 5 | Steyn, K (Kian) | 2 | 1 | 1 | Fourth Knight Riders Juniors Open Chess Tournament 204 (D) | Knight Riders Juniors Open Chess Tournament 2025 (C) | Details |
| Standard | 1 | Chauke, N (Nokukhanya) | 4 | 1 | 3 | Knight Riders Open Chess Tournament 2025 (C) | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | Details |
| Standard | 2 | Maduna, A (Asanda) | 3 | 1 | 2 | Fourth Knight Riders Juniors Open Chess Tournament 204 (D) | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | Details |
| Standard | 3 | Chikwava, R (Ronald) | 3 | 3 | 0 | JMC Crawford Ruimsig 2025 (D) | First Knight Riders Juniors Open Chess Tournament 2026 (C) | Details |
| Standard | 4 | Mankena, S (Satvik Ram) | 2 | 2 | 0 | JMC Closed 2025 (U14) | Fourth Knight Riders Juniors Open Chess Tournament 2025 (B) | Details |
| Standard | 5 | Bester, J (Johannes) | 2 | 1 | 1 | First Knights Juniors Chess Tournament 2025 (D) | First Knight Riders Juniors Open Chess Tournament 2026 (C) | Details |