PLAYER PAGE
Mari Muller
2120135735Tshwane (GTP)Personal
Main rating
| Rating | 1378.7 |
| K-factor | 32 |
| Floor | 919.8 |
| Highest | 1419.8 (2025-09-01) |
| Min/Max +/- allowed | 121 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1288.3 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1378.7 |
| K-factor | 32 |
| Floor | 919.8 |
| Highest | 1419.8 (2025-09-01) |
| Min/Max +/- allowed | 121.2 |
Standard rating
| Rating | 1377.4 |
| K-factor | 32 |
| Floor | 927.7 |
| Highest | 1427.7 (2025-09-01) |
| Min/Max +/- allowed | 119.9 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1288.3 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1377.4 |
| K-factor | 32 |
| Floor | 927.7 |
| Highest | 1427.7 (2025-09-01) |
| Min/Max +/- allowed | 119.9 |
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 | 2025 Gauteng Top Schools Teams (U13) | Standard | 2025-08-29 | 2025-08-29 | Tshwane (GTP) | 5 | 1419.8 | 5 | 1 | 1149.7 | 0 | Details |
| 2 | 2025 Tshwane South School District CLOSED League Championship (U13A) | Standard | 2025-08-15 | 2025-08-15 | Tshwane (GTP) | 5 | 1377.8 | 4 | 4 | 1675.2 | 0 | Details |
| 3 | 2025 Tshwane South School District Individual Finals (D4) (U13 Girls) | Standard | 2025-05-10 | 2025-05-10 | Tshwane (GTP) | 5 | 1384.8 | 5 | 3 | 1351.1 | 0 | Details |
| 4 | Gauteng Inter-Region at UJ 2024 (U14 Girls) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1355.4 | 4 | 2 | 1467 | 0 | Details |
| 5 | Gauteng Top Schools 2024 (U13 Girls) | Standard | 2024-10-04 | 2024-10-04 | Ekurhuleni (GE) | 5 | 1333.9 | 5 | 3 | 1463 | 0 | Details |
| 6 | 2024 Etienne Lewis (U14) | Standard | 2024-08-30 | 2024-09-01 | Tshwane (GTP) | 7 | 1328.5 | 7 | 4 | 1353 | 0 | Details |
| 7 | D4 Tshwane South District Schools Teams Chess Tournament 2024 (U13 Girls) | Standard | 2024-08-03 | 2024-08-03 | Tshwane (GTP) | 3 | 1295 | 3 | 2.5 | 1625.3 | 0 | Details |
| 8 | 2024 Elise Steenkamp Open Chess Tournament (Queens) | Standard | 2024-06-15 | 2024-06-17 | Tshwane (GTP) | 7 | 1345.1 | 7 | 3 | 1160.3 | 0 | Details |
| 9 | 2024 Tshwane South School District CLOSED Individual Championships (U13 Girls) | Standard | 2024-05-11 | 2024-05-11 | Tshwane (GTP) | 5 | 1352.9 | 5 | 2.5 | 1316.4 | 0 | Details |
| 10 | 2024 Milos Ristic Open Chess Tournament (U14) | Standard | 2024-04-27 | 2024-04-27 | Tshwane (GTP) | 5 | 1353.2 | 5 | 3 | 1359.5 | 0 | Details |
| 11 | 2024 Chris Greyling Open Chess Tournament (D3) | Standard | 2024-03-16 | 2024-03-16 | Tshwane (GTP) | 5 | 1333.2 | 5 | 3 | 1440.2 | 0 | Details |
| 12 | 2024 Constantiapark Open (D1) | Standard | 2024-02-17 | 2024-02-17 | Tshwane (GTP) | 5 | 1384.9 | 5 | 2 | 1081.5 | 0 | Details |
| 13 | 2024 Tshwane Chess OPEN Registration Tournament (D1) | Standard | 2024-01-27 | 2024-01-27 | Tshwane (GTP) | 5 | 1288.3 | 5 | 4 | 1456 | 0 | Details |
| 14 | 2024 Gauteng Inter-Region Chess Championship (U12 Girls B) | Standard | 2024-01-13 | 2024-01-14 | Tshwane (GTP) | 5 | 1288.3 | 5 | 4.5 | 1530.2 | 0 | Details |
| 15 | 2023 Gauteng Top Schools (U13 Girls) | Standard | 2023-08-18 | 2023-08-18 | West Rand (GWR) | 5 | 1261.8 | 5 | 4 | 1477.7 | 0 | Details |
| 16 | 2023 Etienne Lewis Closed Tournament (U12) | Standard | 2023-08-25 | 2023-08-27 | Tshwane (GTP) | 7 | 1261.8 | 7 | 3 | 1188.8 | 0 | Details |
| 17 | 2023 Tshwane South School District CLOSED League Championship (U11) | Standard | 2023-07-29 | 2023-07-29 | Tshwane (GTP) | 5 | 1244.5 | 5 | 3 | 1349.1 | 0 | Details |
| 18 | 2023 Lubowski Open Tournament (D) | Standard | 2023-06-24 | 2023-06-25 | Tshwane (GTP) | 5 | 1234.3 | 5 | 3 | 1290 | 0 | Details |
| 19 | 2023 Tshwane South School District CLOSED Individual Championships (U11 Girls) | Standard | 2023-04-22 | 2023-04-22 | Tshwane (GTP) | 5 | 1267.2 | 4 | 1 | 1034.3 | 0 | Details |
| 20 | Laerskool Constantiapark Open Chess Tournament 2023 (U12) | Standard | 2023-02-18 | 2023-02-18 | Tshwane (GTP) | 5 | 1253.5 | 5 | 3 | 1341.1 | 0 | Details |
| 21 | 2023 Tshwane Chess Open Registration Tournament (D1) | Standard | 2023-01-28 | 2023-01-28 | Tshwane (GTP) | 5 | 1206.3 | 5 | 4 | 1468.2 | 0 | Details |
| 22 | 2022 Etienne Lewis (U12 Girls) | Standard | 2022-09-02 | 2022-09-04 | Tshwane (GTP) | 7 | 1302.7 | 6 | 1.5 | 896.4 | 0 | Details |
| 23 | Ladies Tournament 9 August 2022 (Knight) | Standard | 2022-08-09 | 2022-08-09 | Tshwane (GTP) | 5 | 1262 | 5 | 4 | 1387.2 | 0 | Details |
| 24 | 2022 Menlo Open Tournament (D) | Standard | 2022-07-23 | 2022-07-23 | Tshwane (GTP) | 5 | 1246.7 | 5 | 3 | 1303.4 | 0 | Details |
| 25 | 2022 Blou Bul Open (D) | Standard | 2022-06-25 | 2022-06-26 | Tshwane (GTP) | 5 | 1238.2 | 5 | 3.5 | 1288 | 0 | Details |
| 26 | 2022 Chris Greyling Open (D) | Standard | 2022-03-12 | 2022-03-12 | Tshwane (GTP) | 5 | 1190.1 | 5 | 4 | 1455.4 | 0 | Details |
| 27 | 2022 Tshwane Chess Open Registration Tournament (D1) | Standard | 2022-01-29 | 2022-01-29 | Tshwane (GTP) | 5 | 1214.3 | 5 | 2 | 1083.5 | 0 | Details |
| 28 | 2021 Lardies Ope (E) | Standard | 2021-10-30 | 2021-10-30 | Tshwane (GTP) | 5 | 1200 | 5 | 3 | 1280.7 | 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 | 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 (History)
| Games | 142 |
| Wins | 81 |
| Draws | 5 |
| Losses | 56 |
| White | 75 |
| Black | 67 |
| White wins | 44 |
| Black wins | 37 |
| Score | 83.5 |
| Percent | 58.8 |
| Dp | 74.8 |
| AOR | 1243.7 |
| Performance | 1318.6 |
Rankings (Main)
| National | |
| Overall | 3729 |
| Gender | 586 |
| Age group | 537 |
| Gender/Age | 122 |
| Provincial | |
| Overall | 1278 |
| Gender | 208 |
| Age group | 198 |
| Gender/Age | 49 |
| Regional | |
| Overall | 460 |
| Gender | 89 |
| Age group | 70 |
| Gender/Age | 17 |
Rankings (Standard)
| National | |
| Overall | 3396 |
| Gender | 544 |
| Age group | 506 |
| Gender/Age | 110 |
| Provincial | |
| Overall | 1212 |
| Gender | 198 |
| Age group | 193 |
| Gender/Age | 47 |
| Regional | |
| Overall | 456 |
| Gender | 87 |
| Age group | 72 |
| Gender/Age | 18 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (12 months)
| Games | 14 |
| Score | 8 |
| Percent | 57.1 |
| Aor | 1311.1 |
| Dp | 60.7 |
| Prat | 1371.8 |
Performance (History)
| Games | 142 |
| Score | 83.5 |
| Percent | 58.8 |
| Aor | 1243.7 |
| Dp | 74.8 |
| Prat | 1318.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Ndebele, AT (Akhumzi Thandolwenkosi) | 4 | 0 | 4 | 2021 Lardies Ope (E) | 2024 Chris Greyling Open Chess Tournament (D3) | Details |
| Overall | 2 | Bogaard, A (Anneke) | 4 | 3 | 1 | 2022 Tshwane Chess Open Registration Tournament (D1) | 2024 Etienne Lewis (U14) | Details |
| Overall | 3 | Padayachy, V (Vidya) | 3 | 3 | 0 | 2022 Blou Bul Open (D) | 2025 Tshwane South School District CLOSED League Championship (U13A) | Details |
| Overall | 4 | De Jager, K (Konrad) | 3 | 1 | 2 | 2023 Lubowski Open Tournament (D) | 2025 Tshwane South School District CLOSED League Championship (U13A) | Details |
| Overall | 5 | Webb, A (Abbygail) | 3 | 0 | 3 | 2022 Tshwane Chess Open Registration Tournament (D1) | 2023 Gauteng Top Schools (U13 Girls) | Details |
| Standard | 1 | Ndebele, AT (Akhumzi Thandolwenkosi) | 4 | 0 | 4 | 2021 Lardies Ope (E) | 2024 Chris Greyling Open Chess Tournament (D3) | Details |
| Standard | 2 | Bogaard, A (Anneke) | 4 | 3 | 1 | 2022 Tshwane Chess Open Registration Tournament (D1) | 2024 Etienne Lewis (U14) | Details |
| Standard | 3 | Padayachy, V (Vidya) | 3 | 3 | 0 | 2022 Blou Bul Open (D) | 2025 Tshwane South School District CLOSED League Championship (U13A) | Details |
| Standard | 4 | De Jager, K (Konrad) | 3 | 1 | 2 | 2023 Lubowski Open Tournament (D) | 2025 Tshwane South School District CLOSED League Championship (U13A) | Details |
| Standard | 5 | Webb, A (Abbygail) | 3 | 0 | 3 | 2022 Tshwane Chess Open Registration Tournament (D1) | 2023 Gauteng Top Schools (U13 Girls) | Details |