PLAYER PAGE
Zian Booysen
1120155245Sedibeng (GSV)Personal
Main rating
| Rating | 1311.6 |
| K-factor | 36 |
| Floor | 878.6 |
| Highest | 1383 (2024-11-01) |
| Min/Max +/- allowed | 128 |
| Rating Change () | |
| Games | 14 |
| Score | 7 |
| We | 8.28 |
| SWe | -1.1 |
| Temp +/- | -39.7 |
| Penalties | 0 |
| Weight perform | 1197.7 |
| Final +/- | -39.7 |
| New Rating () | |
| Rating | 1271.9 |
| K-factor | 36 |
| Floor | 878.6 |
| Highest | 1383 (2024-11-01) |
| Min/Max +/- allowed | 127.8 |
Standard rating
| Rating | 1285.2 |
| K-factor | 36 |
| Floor | 873.8 |
| Highest | 1373.8 (2025-09-01) |
| Min/Max +/- allowed | 129.4 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1179.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1285.2 |
| K-factor | 36 |
| Floor | 873.8 |
| Highest | 1373.8 (2025-09-01) |
| Min/Max +/- allowed | 129.4 |
Rapid rating
| Rating | 1251.6 |
| K-factor | 36 |
| Floor | 755.4 |
| Highest | 1462.5 (2023-06-01) |
| Min/Max +/- allowed | 114.1 |
| Rating Change () | |
| Games | 5 |
| Score | 3 |
| We | 3.23 |
| SWe | -1.22 |
| Temp +/- | -44.1 |
| Penalties | 0 |
| Weight perform | 1197.3 |
| Final +/- | -44.1 |
| New Rating () | |
| Rating | 1207.5 |
| K-factor | 36 |
| Floor | 755.4 |
| Highest | 1462.5 (2023-06-01) |
| Min/Max +/- allowed | 114.1 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 9 |
| Score | 4 |
| We | 5.61 |
| SWe | -1.61 |
| Temp +/- | -57.9 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | -57.9 |
| New Rating () | |
| Rating | 1142.1 |
| 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 |
| 1 | Gauteng Top Schools Teams 2026 (U15 Open) | Rapid | 2026-08-28 | 2026-08-28 | Ekurhuleni (GE) | 5 | 1311.6 | 5 | 3 | 1225.4 | -12.7 | Details |
| 2 | Chess-in-the-Vaal Blitz 2026 (A+B) | Blitz | 2026-09-26 | 2026-09-26 | Sedibeng (GSV) | 9 | 1311.6 | 9 | 4 | 1229.8 | -5.2 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | D7 (Sedibeng East) Schools Team Championships 2026 (U15) | Rapid | 2026-08-15 | 2026-08-15 | Sedibeng (GSV) | 4 | 1311.6 | 3 | 3 | 1477.8 | 19.7 | Details |
| 2 | Eureka Open 01 August 2026 (B) | Standard | 2026-08-01 | 2026-08-01 | Sedibeng (GSV) | 5 | 1311.6 | 5 | 2 | 1288.8 | -2.4 | Details |
| 3 | Fundraiser for Philip and Anika 09 May 2026 (C) | Standard | 2026-05-09 | 2026-05-09 | Sedibeng (GSV) | 5 | 1286 | 5 | 2 | 1327.6 | 8.3 | Details |
| 4 | Hoerskool Drie Riviere Chess Open 07 March 2026 (B) | Standard | 2026-03-07 | 2026-03-07 | Sedibeng (GSV) | 5 | 1348.2 | 5 | 1 | 1000.4 | -62.2 | Details |
| 5 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1367.1 | 5 | 2 | 1280.9 | -10.3 | Details |
| 6 | 2025 Gauteng Top Schools Teams (U13) | Standard | 2025-08-29 | 2025-08-29 | Tshwane (GTP) | 5 | 1368.1 | 5 | 3 | 1368.2 | -0.7 | Details |
| 7 | Laerskool Eligwa Open 20 Sept 2025 (D) | Standard | 2025-09-20 | 2025-09-20 | Sedibeng (GSV) | 5 | 1368.6 | 5 | 3 | 1357.8 | -0.3 | Details |
| 8 | GDE (D7) Sedibeng East Schools 2025 (U13) | Standard | 2025-08-02 | 2025-08-02 | Sedibeng (GSV) | 5 | 1307.6 | 5 | 5 | 1660.9 | 33.9 | Details |
| 9 | LS Vryheidsmonument Chess Open 21 Jun 2025 (C) | Standard | 2025-06-21 | 2025-06-21 | Sedibeng (GSV) | 5 | 1340.5 | 4 | 1 | 1106.3 | -18.3 | Details |
| 10 | GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U13 Boys) | Standard | 2025-05-24 | 2025-05-24 | Sedibeng (GSV) | 5 | 1325.2 | 5 | 3 | 1405.1 | 8.5 | Details |
| 11 | HS Overvaal Rapid 12 Apr 2025 (D) | Rapid | 2025-04-12 | 2025-04-12 | Sedibeng (GSV) | 5 | 1319.3 | 5 | 2.5 | 1358.8 | 3.3 | Details |
| 12 | Hoerskool Drie Riviere Open 08 March 2025 (D) | Standard | 2025-03-08 | 2025-03-08 | Sedibeng (GSV) | 5 | 1315.3 | 5 | 3 | 1330.5 | 2.3 | Details |
| 13 | Gauteng Inter-Region at UJ 2024 (U14 Open) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1348.1 | 5 | 1 | 1191.8 | -18.2 | Details |
| 14 | Queens Gambit Chess Open 2024 (C) | Standard | 2024-11-23 | 2024-11-23 | Sedibeng (GSV) | 5 | 1378.6 | 5 | 2 | 1195.6 | -16.9 | Details |
| 15 | NWU Vaal Chess Open 12 Oct 2024 (D) | Standard | 2024-10-12 | 2024-10-12 | Sedibeng (GSV) | 5 | 1330.4 | 5 | 4 | 1501.4 | 16.1 | Details |
| 16 | Kings Gambit Chess Open 14 Sept 2024 (D) | Standard | 2024-09-14 | 2024-09-14 | Sedibeng (GSV) | 5 | 1317.3 | 5 | 3.5 | 1468.6 | 15.4 | Details |
| 17 | North School Primary Chess Open 2024 (D) | Standard | 2024-08-31 | 2024-08-31 | Sedibeng (GSV) | 5 | 1317.3 | 5 | 2 | 1225.9 | -8.1 | Details |
| 18 | Sedibeng East D7 Teams Trials 2024 (U13) | Standard | 2024-08-03 | 2024-08-03 | Sedibeng (GSV) | 5 | 1309.2 | 5 | 3 | 1364.1 | 4.5 | Details |
| 19 | Midvaal Winter Classic 13 July 2024 (E) | Rapid | 2024-07-13 | 2024-07-13 | Sedibeng (GSV) | 7 | 1293 | 7 | 4.5 | 1387.7 | 9.1 | Details |
| 20 | Hoerskool Overvaal Chess Open 2024 (D) | Standard | 2024-04-20 | 2024-04-20 | Sedibeng (GSV) | 5 | 1158.8 | 5 | 3 | 1418.5 | 24.4 | Details |
| 21 | Vaalpark Primary Chess Open 2024 (D) | Standard | 2024-04-13 | 2024-04-13 | Sedibeng (GSV) | 5 | 1158.8 | 5 | 3 | 1423 | 25.1 | Details |
| 22 | HS Drie Riviere Chess Open Section 2024 (D) | Standard | 2024-03-09 | 2024-03-09 | Sedibeng (GSV) | 5 | 1158.8 | 5 | 2.5 | 1203.2 | 5 | Details |
| 23 | NG Kerk Vanderbijlpark Suid 2024 (D) | Standard | 2024-02-24 | 2024-02-24 | Sedibeng (GSV) | 5 | 1185.7 | 5 | 1 | 982.6 | -19.4 | Details |
| 24 | Laerskool Midvaal Chess Open Section 2024 (D) | Standard | 2024-02-10 | 2024-02-10 | Sedibeng (GSV) | 5 | 1185.7 | 4 | 2 | 1241.7 | 4.3 | Details |
| 25 | 2024 Gauteng Inter-Region Chess Championship (U14C) | Standard | 2024-01-13 | 2024-01-14 | Tshwane (GTP) | 5 | 1191.8 | 4 | 2 | 1153 | -3.4 | Details |
| 26 | NWU Vaal Open 2023 (D) | Standard | 2023-10-14 | 2023-10-14 | Sedibeng (GSV) | 5 | 1249.7 | 5 | 2.5 | 1242.4 | -1.3 | Details |
| 27 | Dr Pieter Hangelbroek Rapid 2023 (C) | Rapid | 2023-10-28 | 2023-10-28 | Sedibeng (GSV) | 5 | 1249.7 | 5 | 0 | 806 | -31 | Details |
| 28 | Gauteng D7 Teams 2023 (U11) | Standard | 2023-08-12 | 2023-08-12 | Sedibeng (GSV) | 5 | 1243.1 | 5 | 3 | 1287.2 | 3.7 | Details |
| 29 | VaalPark Primary Open Chess 2023 (E) | Rapid | 2023-06-16 | 2023-06-16 | Sedibeng (GSV) | 5 | 1202.1 | 5 | 4 | 1455 | 22.6 | Details |
| 30 | Gauteng Schools D7 2023 (U11 Boys) | Standard | 2023-05-20 | 2023-05-20 | Sedibeng (GSV) | 5 | 1184.7 | 5 | 4 | 1490.5 | 30.5 | Details |
| 31 | Gauteng Schools Individual Finals 2023 (U11 Boys) | Standard | 2023-05-26 | 2023-05-26 | Ekurhuleni (GE) | 5 | 1200 | 5 | 2 | 1220.5 | 1.2 | Details |
| 32 | Gaueng Schools D7 2022 (U11 Boys) | Standard | 2022-06-04 | 2022-06-04 | Sedibeng (GSV) | 5 | 1200 | 5 | 2 | 1115 | -7.6 | 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 | 32 |
| Wins | 15 |
| Draws | 0 |
| Losses | 17 |
| White | 17 |
| Black | 15 |
| White wins | 9 |
| Black wins | 6 |
| Score | 15 |
| Percent | 46.9 |
| Dp | -26.6 |
| AOR | 1267.6 |
| Performance | 1241 |
Game statistics (History)
| Games | 171 |
| Wins | 86 |
| Draws | 5 |
| Losses | 80 |
| White | 86 |
| Black | 85 |
| White wins | 40 |
| Black wins | 46 |
| Score | 88.5 |
| Percent | 51.8 |
| Dp | 14.9 |
| AOR | 1272.8 |
| Performance | 1287.7 |
Rankings (Main)
| National | |
| Overall | 5791 |
| Gender | 4754 |
| Age group | 900 |
| Gender/Age | 703 |
| Provincial | |
| Overall | 1974 |
| Gender | 1622 |
| Age group | 311 |
| Gender/Age | 237 |
| Regional | |
| Overall | 227 |
| Gender | 192 |
| Age group | 42 |
| Gender/Age | 35 |
Rankings (Standard)
| National | |
| Overall | 5903 |
| Gender | 4747 |
| Age group | 953 |
| Gender/Age | 741 |
| Provincial | |
| Overall | 2114 |
| Gender | 1695 |
| Age group | 349 |
| Gender/Age | 262 |
| Regional | |
| Overall | 244 |
| Gender | 199 |
| Age group | 43 |
| Gender/Age | 34 |
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 | 32 |
| Score | 15 |
| Percent | 46.9 |
| Aor | 1267.6 |
| Dp | -26.6 |
| Prat | 1241 |
Performance (12 months)
| Games | 37 |
| Score | 17 |
| Percent | 45.9 |
| Aor | 1280.9 |
| Dp | -34.5 |
| Prat | 1246.4 |
Performance (History)
| Games | 171 |
| Score | 88.5 |
| Percent | 51.8 |
| Aor | 1272.8 |
| Dp | 14.9 |
| Prat | 1287.7 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Motloung, I (Israel) | 5 | 4 | 1 | Hoerskool Overvaal Chess Open 2024 (D) | Laerskool Eligwa Open 20 Sept 2025 (D) | Details |
| Overall | 2 | Blignaut, AA (Alma) | 5 | 3 | 2 | NWU Vaal Open 2023 (D) | Hoerskool Drie Riviere Open 08 March 2025 (D) | Details |
| Overall | 3 | Brand, HVN (Hendrik van Niekerk (Henko)) | 4 | 2 | 2 | Gauteng Schools D7 2023 (U11 Boys) | GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U13 Boys) | Details |
| Overall | 4 | Du Toit, M (Monika) | 4 | 4 | 0 | Laerskool Midvaal Chess Open Section 2024 (D) | Midvaal Winter Classic 13 July 2024 (E) | Details |
| Overall | 5 | Myburgh, V (Vaughn) | 4 | 2 | 2 | NG Kerk Vanderbijlpark Suid 2024 (D) | GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U13 Boys) | Details |
| Standard | 1 | Blignaut, AA (Alma) | 5 | 3 | 2 | NWU Vaal Open 2023 (D) | Hoerskool Drie Riviere Open 08 March 2025 (D) | Details |
| Standard | 2 | Brand, HVN (Hendrik van Niekerk (Henko)) | 4 | 2 | 2 | Gauteng Schools D7 2023 (U11 Boys) | GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U13 Boys) | Details |
| Standard | 3 | Motloung, I (Israel) | 4 | 3 | 1 | Hoerskool Overvaal Chess Open 2024 (D) | Laerskool Eligwa Open 20 Sept 2025 (D) | Details |
| Standard | 4 | Myburgh, V (Vaughn) | 4 | 2 | 2 | NG Kerk Vanderbijlpark Suid 2024 (D) | GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U13 Boys) | Details |
| Standard | 5 | Blignaut, A (Aiden) | 3 | 2 | 1 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Eureka Open 01 August 2026 (B) | Details |
| Rapid | 1 | Jonker, C (Corne) | 2 | 1 | 1 | Dr Pieter Hangelbroek Rapid 2023 (C) | Midvaal Winter Classic 13 July 2024 (E) | Details |