PLAYER PAGE
Mervin Claassen
1100130762Eden (WEG)Personal
Main rating
| Rating | 1515.2 |
| K-factor | 32 |
| Floor | 1068.1 |
| Highest | 1568.1 (2025-09-01) |
| Min/Max +/- allowed | 98 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1368.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1515.2 |
| K-factor | 32 |
| Floor | 1068.1 |
| Highest | 1568.1 (2025-09-01) |
| Min/Max +/- allowed | 98.1 |
Standard rating
| Rating | 1509.4 |
| K-factor | 32 |
| Floor | 1086.3 |
| Highest | 1586.3 (2025-03-01) |
| Min/Max +/- allowed | 95.6 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1368.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1509.4 |
| K-factor | 32 |
| Floor | 1086.3 |
| Highest | 1586.3 (2025-03-01) |
| Min/Max +/- allowed | 95.6 |
Rapid rating
| Rating | 1340.7 |
| K-factor | 36 |
| Floor | 840.7 |
| Highest | 1340.7 (2025-08-01) |
| Min/Max +/- allowed | 135.7 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1340.7 |
| K-factor | 36 |
| Floor | 840.7 |
| Highest | 1340.7 (2025-08-01) |
| Min/Max +/- allowed | 135.7 |
Blitz rating
| Rating | 1281 |
| K-factor | 36 |
| Floor | 781 |
| Highest | 1281 (2024-12-01) |
| Min/Max +/- allowed | 147.7 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1159.7 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1281 |
| K-factor | 36 |
| Floor | 781 |
| Highest | 1281 (2024-12-01) |
| Min/Max +/- allowed | 147.7 |
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 | Mossel Bay Trials 1 2026 (U17 Boys) | Standard | 2026-01-31 | 2026-01-31 | Eden (WEG) | 5 | 1522.8 | 5 | 3 | 1484.3 | 0 | Details |
| 2 | 2025 Mzansi Individual Championships (U16 Open) | Classical | 2025-12-17 | 2025-12-20 | Nelson Mandela Bay (ENM) | 6 | 1536.6 | 6 | 2.5 | 1397.5 | 0 | Details |
| 3 | 2025 Mzansi Inter Provincial Team Championships (U16 Open) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1536.6 | 6 | 2.5 | 1350.8 | 0 | Details |
| 4 | Western Cape Schools - Top Schools 2025 (U19) | Standard | 2025-09-06 | 2025-09-07 | Overberg (WOS) | 6 | 1568.1 | 5 | 1.5 | 1183.9 | 0 | Details |
| 5 | Mossel Bay Top Schools 2025 (U18 Open) | Standard | 2025-08-02 | 2025-08-02 | Eden (WEG) | 5 | 1566.5 | 5 | 4.5 | 1580.4 | 0 | Details |
| 6 | Knysna Oyster Festival Rapid 2025 (Scholars) | Rapid | 2025-07-12 | 2025-07-12 | Eden (WEG) | 6 | 1533.6 | 6 | 5 | 1774.2 | 0 | Details |
| 7 | Western Cape Schools Individual Championship 2025 (U15 Boys) | Standard | 2025-04-26 | 2025-04-27 | West Coast (WCU) | 6 | 1554.8 | 6 | 3.5 | 1470 | 0 | Details |
| 8 | Eden Chess Trials 2 2025 (U16) | Standard | 2025-03-15 | 2025-04-12 | Eden (WEG) | 10 | 1554.8 | 10 | 6 | 1461.4 | 0 | Details |
| 9 | Eden Schools Chess Trials 1 2025 (U15 Boys) | Standard | 2025-03-08 | 2025-03-08 | Eden (WEG) | 5 | 1553.9 | 5 | 3.5 | 1564.7 | 0 | Details |
| 10 | Mossel Bay Schools Trials 2 2025 (U15 Boys) | Standard | 2025-02-22 | 2025-02-22 | Eden (WEG) | 5 | 1548.5 | 5 | 5 | 1638.1 | 0 | Details |
| 11 | Eden Rapid 2025 (A) | Rapid | 2025-02-23 | 2025-02-23 | Eden (WEG) | 6 | 1548.5 | 6 | 3.5 | 1472 | 0 | Details |
| 12 | Eden Gambit Chess Tournament 2024 (Blitz) | Blitz | 2024-11-01 | 2024-11-01 | Eden (WEG) | 7 | 1554 | 7 | 3.5 | 1477.4 | 0 | Details |
| 13 | Eden Chess Union League 2024 (1st Division) | Standard | 2024-10-12 | 2024-10-12 | Eden (WEG) | 5 | 1539.9 | 5 | 3.5 | 1621.5 | 0 | Details |
| 14 | Western Cape Top Schools Championship 2024 (U18 Mixed) | Standard | 2024-08-30 | 2024-09-01 | Eden (WEG) | 6 | 1511.8 | 6 | 4.5 | 1645.6 | 0 | Details |
| 15 | InterClub Blitz 4 2024 | Blitz | 2024-09-04 | 2024-09-04 | Eden (WEG) | 10 | 1511.8 | 8 | 7 | 1565.1 | 0 | Details |
| 16 | Eden Top Schools 2024 (U18 Open) | Standard | 2024-08-17 | 2024-08-17 | Eden (WEG) | 5 | 1547.9 | 5 | 2 | 1321.3 | 0 | Details |
| 17 | Western Cape - Kings and Queens 2024 (Boys) | Rapid | 2024-06-08 | 2024-06-08 | Overberg (WOS) | 5 | 1564 | 4 | 2 | 1382.9 | 0 | Details |
| 18 | Eden Chess Trials 2 2024 (U16) | Standard | 2024-04-13 | 2024-04-20 | Eden (WEG) | 10 | 1472.9 | 10 | 9 | 1762.5 | 0 | Details |
| 19 | Western Cape HS Individuals Championship 2024 (U15 Boys) | Standard | 2024-03-21 | 2024-03-22 | Overberg (WOS) | 6 | 1476.6 | 6 | 4 | 1478.1 | 0 | Details |
| 20 | Eden School Chess Trials 1 2024 (U15 Boys) | Standard | 2024-03-09 | 2024-03-09 | Eden (WEG) | 5 | 1476.6 | 5 | 3 | 1440.4 | 0 | Details |
| 21 | Mossel Bay Open 2023 (B) | Standard | 2023-09-30 | 2023-10-01 | Eden (WEG) | 6 | 1469.1 | 6 | 4.5 | 1498.8 | 0 | Details |
| 22 | Mossel Bay Open 2023 (Blitz) | Blitz | 2023-09-29 | 2023-09-29 | Eden (WEG) | 6 | 1479.5 | 6 | 2 | 1279.5 | 0 | Details |
| 23 | Western Cape PS Individuals 2023 (U13 Boys) | Standard | 2023-05-05 | 2023-05-06 | Cape Town (WCT) | 6 | 1444.7 | 6 | 4 | 1497.3 | 0 | Details |
| 24 | Inter Club Blitz 1 2023 | Blitz | 2023-05-24 | 2023-05-24 | Eden (WEG) | 10 | 1444.7 | 8 | 3 | 1223 | 0 | Details |
| 25 | Eden Trials 2+3 2023 (U14) | Standard | 2023-04-15 | 2023-05-13 | Eden (WEG) | 10 | 1444.7 | 10 | 6.5 | 1555.5 | 0 | Details |
| 26 | Heidelberg Big Pumpkin Chess Tournament 2023 (A+B) | Standard | 2023-04-01 | 2023-04-01 | Eden (WEG) | 5 | 1441.2 | 5 | 3 | 1469.4 | 0 | Details |
| 27 | Eden Trails 1 2023 (U13 Boys) | Standard | 2023-03-11 | 2023-03-11 | Eden (WEG) | 5 | 1427.7 | 5 | 4 | 1506.8 | 0 | Details |
| 28 | Mossel Bay Schools Trials 2 2023 (U13 Boys) | Standard | 2023-02-18 | 2023-02-18 | Eden (WEG) | 5 | 1413.6 | 5 | 4 | 1509.9 | 0 | Details |
| 29 | Mossel Bay Schools Trials 1 2023 (U13 Boys) | Standard | 2023-01-28 | 2023-01-28 | Eden (WEG) | 5 | 1395 | 5 | 4 | 1505 | 0 | Details |
| 30 | Mossel Bay Open 2022 (B) | Standard | 2022-09-30 | 2022-10-02 | Eden (WEG) | 6 | 1407.8 | 6 | 3 | 1325.1 | 0 | Details |
| 31 | Interclub Blitz Evening (Mossel Bay) | Blitz | 2022-10-26 | 2022-10-26 | Eden (WEG) | 6 | 1407.8 | 6 | 4.5 | 1523 | 0 | Details |
| 32 | Knysna Oyster Festival Rapid Chess 2022 (A) | Rapid | 2022-07-02 | 2022-07-02 | Eden (WEG) | 5 | 1391.1 | 5 | 2.5 | 1534.9 | 0 | Details |
| 33 | Interclub Blitz Evening 2022 | Blitz | 2022-06-08 | 2022-06-08 | Eden (WEG) | 6 | 1470.5 | 6 | 3 | 1192.7 | 0 | Details |
| 34 | George Open 2022 (B) | Standard | 2022-06-11 | 2022-06-11 | Eden (WEG) | 5 | 1470.5 | 5 | 1 | 1049.1 | 0 | Details |
| 35 | Western Cape Schools 2022 (U13 Boys) | Standard | 2022-05-28 | 2022-05-29 | Cape Winelands (WCW) | 6 | 1428.9 | 6 | 4 | 1487.3 | 0 | Details |
| 36 | Eden Proewe 2 2022 (O13 Seuns) | Standard | 2022-04-09 | 2022-04-09 | Eden (WEG) | 5 | 1354.2 | 5 | 4 | 1672.8 | 0 | Details |
| 37 | Eden Proewe 1 2022 (O13 Seuns) | Standard | 2022-03-12 | 2022-03-12 | Eden (WEG) | 5 | 1343.2 | 5 | 3 | 1397 | 0 | Details |
| 38 | Mosselbaai Skole Skaak Proewe 1 2022 (U13 Boys) | Standard | 2022-01-29 | 2022-01-29 | Eden (WEG) | 5 | 1304.9 | 5 | 4 | 1509.9 | 0 | Details |
| 39 | Eden Schools Closed Trials 1 2020 (U11 Boys) | Standard | 2020-03-07 | 2020-03-07 | Eden (WEG) | 5 | 1260.2 | 5 | 4 | 1514.9 | 0 | Details |
| 40 | Mossel Bay Trials 2 2020 (U11) | Standard | 2020-02-15 | 2020-02-15 | Eden (WEG) | 5 | 1200 | 5 | 4 | 1433.2 | 0 | Details |
| 41 | Mossel Bay Trials 1 2020 (U11) | Standard | 2020-02-01 | 2020-02-01 | Eden (WEG) | 5 | 1200 | 5 | 3 | 1281.4 | 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 | 3 |
| Draws | 0 |
| Losses | 2 |
| White | 3 |
| Black | 2 |
| White wins | 2 |
| Black wins | 1 |
| Score | 3 |
| Percent | 60 |
| Dp | 85 |
| AOR | 1399.3 |
| Performance | 1484.3 |
Game statistics (History)
| Games | 241 |
| Wins | 143 |
| Draws | 22 |
| Losses | 76 |
| White | 119 |
| Black | 122 |
| White wins | 70 |
| Black wins | 73 |
| Score | 154 |
| Percent | 63.9 |
| Dp | 118.2 |
| AOR | 1352.5 |
| Performance | 1470.6 |
Rankings (Main)
| National | |
| Overall | 1658 |
| Gender | 1477 |
| Age group | 194 |
| Gender/Age | 167 |
| Provincial | |
| Overall | 508 |
| Gender | 448 |
| Age group | 61 |
| Gender/Age | 51 |
| Regional | |
| Overall | 102 |
| Gender | 91 |
| Age group | 13 |
| Gender/Age | 12 |
Rankings (Standard)
| National | |
| Overall | 1586 |
| Gender | 1396 |
| Age group | 185 |
| Gender/Age | 157 |
| Provincial | |
| Overall | 457 |
| Gender | 392 |
| Age group | 53 |
| Gender/Age | 43 |
| Regional | |
| Overall | 94 |
| Gender | 80 |
| Age group | 12 |
| Gender/Age | 11 |
Rankings (Rapid)
| National | |
| Overall | 1349 |
| Gender | 1138 |
| Age group | 178 |
| Gender/Age | 151 |
| Provincial | |
| Overall | 646 |
| Gender | 531 |
| Age group | 97 |
| Gender/Age | 79 |
| Regional | |
| Overall | 55 |
| Gender | 49 |
| Age group | 7 |
| Gender/Age | 6 |
Rankings (Blitz)
| National | |
| Overall | 312 |
| Gender | 297 |
| Age group | 32 |
| Gender/Age | 27 |
| Provincial | |
| Overall | 116 |
| Gender | 112 |
| Age group | 12 |
| Gender/Age | 12 |
| Regional | |
| Overall | 55 |
| Gender | 54 |
| Age group | 7 |
| Gender/Age | 7 |
Performance ( )
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 5 |
| Score | 3 |
| Percent | 60 |
| Aor | 1399.3 |
| Dp | 85 |
| Prat | 1484.3 |
Performance (12 months)
| Games | 54 |
| Score | 32 |
| Percent | 59.3 |
| Aor | 1396 |
| Dp | 78.7 |
| Prat | 1474.7 |
Performance (History)
| Games | 241 |
| Score | 154 |
| Percent | 63.9 |
| Aor | 1352.5 |
| Dp | 118.2 |
| Prat | 1470.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Claassen, R (Raynier) | 6 | 2 | 4 | Mosselbaai Skole Skaak Proewe 1 2022 (U13 Boys) | Mossel Bay Trials 1 2026 (U17 Boys) | Details |
| Overall | 2 | Cornforth, K (Kayleigh) | 5 | 3 | 2 | Interclub Blitz Evening (Mossel Bay) | Mossel Bay Open 2023 (B) | Details |
| Overall | 3 | Kiewiet, B (B Jay) | 5 | 0 | 5 | Mossel Bay Trials 1 2020 (U11) | Western Cape Top Schools Championship 2024 (U18 Mixed) | Details |
| Overall | 4 | Nell, C (Cohan) | 5 | 4 | 1 | Mossel Bay Trials 1 2020 (U11) | Mossel Bay Trials 1 2026 (U17 Boys) | Details |
| Overall | 5 | Petersen, S (Shenwin) | 5 | 4 | 1 | George Open 2022 (B) | Eden Trials 2+3 2023 (U14) | Details |
| Standard | 1 | Claassen, R (Raynier) | 6 | 2 | 4 | Mosselbaai Skole Skaak Proewe 1 2022 (U13 Boys) | Mossel Bay Trials 1 2026 (U17 Boys) | Details |
| Standard | 2 | Kiewiet, B (B Jay) | 5 | 0 | 5 | Mossel Bay Trials 1 2020 (U11) | Western Cape Top Schools Championship 2024 (U18 Mixed) | Details |
| Standard | 3 | Nell, C (Cohan) | 5 | 4 | 1 | Mossel Bay Trials 1 2020 (U11) | Mossel Bay Trials 1 2026 (U17 Boys) | Details |
| Standard | 4 | Michaels, J (Joshua) | 3 | 2 | 1 | Mossel Bay Schools Trials 2 2023 (U13 Boys) | Eden Chess Trials 2 2025 (U16) | Details |
| Standard | 5 | Bukula, S (Sivuyisile) | 3 | 1 | 2 | Eden Chess Trials 2 2024 (U16) | Eden Chess Union League 2024 (1st Division) | Details |
| Rapid | 1 | Swartbooi, G (Gabriel) | 2 | 0 | 2 | Knysna Oyster Festival Rapid Chess 2022 (A) | Eden Rapid 2025 (A) | Details |
| Blitz | 1 | Cornforth, K (Kayleigh) | 4 | 2 | 2 | Interclub Blitz Evening (Mossel Bay) | Inter Club Blitz 1 2023 | Details |
| Blitz | 2 | Thoresen, K (Kyle) | 2 | 1 | 1 | Interclub Blitz Evening (Mossel Bay) | Interclub Blitz Evening (Mossel Bay) | Details |
| Blitz | 3 | Gilbert, C (Calray) | 2 | 1 | 1 | InterClub Blitz 4 2024 | InterClub Blitz 4 2024 | Details |
| Blitz | 4 | Ceasar, K (Kevin) | 2 | 1 | 1 | Interclub Blitz Evening 2022 | Interclub Blitz Evening 2022 | Details |
| Blitz | 5 | Hanabe, V (Victory) | 2 | 1 | 1 | Inter Club Blitz 1 2023 | Inter Club Blitz 1 2023 | Details |