PLAYER PAGE
Robert Josua Werkman
1130140602Dr Kenneth Kaunda (NWP)Personal
Main rating
| Rating | 1356.6 |
| K-factor | 36 |
| Floor | 896.7 |
| Highest | 1408.7 (2026-01-01) |
| Min/Max +/- allowed | 123 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1355 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1356.6 |
| K-factor | 36 |
| Floor | 896.7 |
| Highest | 1408.7 (2026-01-01) |
| Min/Max +/- allowed | 123.2 |
Standard rating
| Rating | 1363.5 |
| K-factor | 32 |
| Floor | 908.3 |
| Highest | 1408.3 (2026-01-01) |
| Min/Max +/- allowed | 123.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1355 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1363.5 |
| K-factor | 32 |
| Floor | 908.3 |
| Highest | 1408.3 (2026-01-01) |
| Min/Max +/- allowed | 123.2 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| 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 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| 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 (2018-10-01) |
| 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 | Dr KK Chess - Curro 2026 (B) | Standard | 2026-02-07 | 2026-02-07 | Dr Kenneth Kaunda (NWP) | 5 | 1396.6 | 5 | 1 | 1176.2 | 0 | Details |
| 2 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Championship) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1346.7 | 5 | 3 | 1591.8 | 0 | Details |
| 3 | Dr KK Regional Trials Potch 2025 (U14) | Standard | 2025-09-27 | 2025-09-27 | Dr Kenneth Kaunda (NWP) | 5 | 1301.4 | 5 | 4 | 1566.1 | 0 | Details |
| 4 | Dr KK Regional Trials 2025 (U14) | Standard | 2025-09-06 | 2025-09-06 | Dr Kenneth Kaunda (NWP) | 5 | 1291.6 | 5 | 3 | 1354.4 | 0 | Details |
| 5 | DR KK Volkies 2025 (U12) | Standard | 2025-02-01 | 2025-02-01 | Dr Kenneth Kaunda (NWP) | 5 | 1279.3 | 5 | 3 | 1356.5 | 0 | Details |
| 6 | Gauteng Inter-Region at UJ 2024 (U12 Candidates) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1293.1 | 5 | 1.5 | 1013 | 0 | Details |
| 7 | DR KKD Mooirivier Trials 2024 (U12) | Standard | 2024-09-14 | 2024-09-14 | Dr Kenneth Kaunda (NWP) | 5 | 1269.2 | 4 | 2 | 1441.3 | 0 | Details |
| 8 | DR KK Gimmies 2024 (U12) | Standard | 2024-07-13 | 2024-07-13 | Dr Kenneth Kaunda (NWP) | 5 | 1291.6 | 5 | 2 | 1172.5 | 0 | Details |
| 9 | DR KKD Ferdies Mar 2024 (E) | Standard | 2024-03-02 | 2024-03-02 | Dr Kenneth Kaunda (NWP) | 5 | 1301.2 | 5 | 3 | 1252.8 | 0 | Details |
| 10 | DR KKD Curro Feb 2024 (U12) | Standard | 2024-02-10 | 2024-02-10 | Dr Kenneth Kaunda (NWP) | 5 | 1283.9 | 5 | 3 | 1374.7 | 0 | Details |
| 11 | DR KKD Trials 2023 (U12) | Standard | 2023-09-02 | 2023-09-02 | Dr Kenneth Kaunda (NWP) | 5 | 1279.4 | 5 | 3 | 1310.5 | 0 | Details |
| 12 | DR Kenneth Kaunda Volkies 29 Jul 2023 (D) | Standard | 2023-07-29 | 2023-07-29 | Dr Kenneth Kaunda (NWP) | 5 | 1286 | 5 | 3 | 1255.2 | 0 | Details |
| 13 | Dr KKD NG Goudkop 2023 (D Junior) | Standard | 2023-03-18 | 2023-03-18 | Dr Kenneth Kaunda (NWP) | 5 | 1172.8 | 5 | 5 | 1613.6 | 0 | Details |
| 14 | Dr. Kenneth Kaunda Saamtrek 2023 (U12) | Standard | 2023-02-04 | 2023-02-04 | Dr Kenneth Kaunda (NWP) | 5 | 1168 | 5 | 2.5 | 1187.2 | 0 | Details |
| 15 | 2022 South African Junior Team Chess Championships (U12 Open) | Classical | 2022-12-04 | 2022-12-08 | 4 Knights (4K) | 7 | 1172.7 | 5 | 2 | 1158.1 | 0 | Details |
| 16 | Dr. KKD SAJCC Trials September 2022 (U8+U10) | Standard | 2022-09-03 | 2022-09-03 | Dr Kenneth Kaunda (NWP) | 5 | 1181.4 | 5 | 2 | 1140.8 | 0 | Details |
| 17 | Dr. KKD Volkskool 2022 (U10) | Standard | 2022-08-20 | 2022-08-20 | Dr Kenneth Kaunda (NWP) | 5 | 1167.1 | 5 | 3 | 1241.5 | 0 | Details |
| 18 | La Hoff Primary School 2022 (D) | Standard | 2022-07-23 | 2022-07-23 | Dr Kenneth Kaunda (NWP) | 5 | 1200.3 | 4 | 1 | 963.8 | 0 | Details |
| 19 | Bailie Park Potchefstroom 2022 (U8+U10) | Standard | 2022-06-04 | 2022-06-04 | Dr Kenneth Kaunda (NWP) | 5 | 1199.3 | 4 | 2 | 1204.2 | 0 | Details |
| 20 | Ferdinand Postma Potchefstroom 2022 (C) | Standard | 2022-04-09 | 2022-04-09 | Dr Kenneth Kaunda (NWP) | 5 | 1200 | 5 | 2.5 | 1189.7 | 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 | 5 |
| Wins | 1 |
| Draws | 0 |
| Losses | 4 |
| White | 3 |
| Black | 2 |
| White wins | 1 |
| Black wins | 0 |
| Score | 1 |
| Percent | 20 |
| Dp | -255 |
| AOR | 1431.2 |
| Performance | 1176.2 |
Game statistics (History)
| Games | 97 |
| Wins | 50 |
| Draws | 3 |
| Losses | 44 |
| White | 51 |
| Black | 46 |
| White wins | 26 |
| Black wins | 24 |
| Score | 51.5 |
| Percent | 53.1 |
| Dp | 26.3 |
| AOR | 1254.2 |
| Performance | 1280.5 |
Rankings (Main)
| National | |
| Overall | 4256 |
| Gender | 3575 |
| Age group | 512 |
| Gender/Age | 379 |
| Provincial | |
| Overall | 271 |
| Gender | 235 |
| Age group | 30 |
| Gender/Age | 26 |
| Regional | |
| Overall | 60 |
| Gender | 55 |
| Age group | 4 |
| Gender/Age | 4 |
Rankings (Standard)
| National | |
| Overall | 3696 |
| Gender | 3093 |
| Age group | 448 |
| Gender/Age | 323 |
| Provincial | |
| Overall | 252 |
| Gender | 219 |
| Age group | 26 |
| Gender/Age | 22 |
| Regional | |
| Overall | 57 |
| Gender | 52 |
| Age group | 4 |
| Gender/Age | 4 |
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 | 5 |
| Score | 1 |
| Percent | 20 |
| Aor | 1431.2 |
| Dp | -255 |
| Prat | 1176.2 |
Performance (12 months)
| Games | 20 |
| Score | 11 |
| Percent | 55 |
| Aor | 1379.6 |
| Dp | 42.5 |
| Prat | 1422.1 |
Performance (History)
| Games | 97 |
| Score | 51.5 |
| Percent | 53.1 |
| Aor | 1254.2 |
| Dp | 26.3 |
| Prat | 1280.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Van Der Westhuizen, T (Thomas) | 5 | 2 | 3 | Bailie Park Potchefstroom 2022 (U8+U10) | DR KK Gimmies 2024 (U12) | Details |
| Overall | 2 | Van Romburgh, J (Jan) | 4 | 1 | 3 | Ferdinand Postma Potchefstroom 2022 (C) | DR KK Gimmies 2024 (U12) | Details |
| Overall | 3 | Appels, CJ (Chathem Jordan) | 4 | 2 | 2 | DR KK Gimmies 2024 (U12) | Dr KK Regional Trials Potch 2025 (U14) | Details |
| Overall | 4 | Labuschagne, G (Gian) | 3 | 3 | 0 | Dr. KKD SAJCC Trials September 2022 (U8+U10) | DR KK Volkies 2025 (U12) | Details |
| Overall | 5 | Van Zyl, A (Albertus Petrus) | 3 | 2 | 1 | Bailie Park Potchefstroom 2022 (U8+U10) | DR KKD Mooirivier Trials 2024 (U12) | Details |
| Standard | 1 | Van Der Westhuizen, T (Thomas) | 5 | 2 | 3 | Bailie Park Potchefstroom 2022 (U8+U10) | DR KK Gimmies 2024 (U12) | Details |
| Standard | 2 | Van Romburgh, J (Jan) | 4 | 1 | 3 | Ferdinand Postma Potchefstroom 2022 (C) | DR KK Gimmies 2024 (U12) | Details |
| Standard | 3 | Appels, CJ (Chathem Jordan) | 4 | 2 | 2 | DR KK Gimmies 2024 (U12) | Dr KK Regional Trials Potch 2025 (U14) | Details |
| Standard | 4 | Labuschagne, G (Gian) | 3 | 3 | 0 | Dr. KKD SAJCC Trials September 2022 (U8+U10) | DR KK Volkies 2025 (U12) | Details |
| Standard | 5 | Van Zyl, A (Albertus Petrus) | 3 | 2 | 1 | Bailie Park Potchefstroom 2022 (U8+U10) | DR KKD Mooirivier Trials 2024 (U12) | Details |