PLAYER PAGE
Personal
Zuidersma, JM (Jean Martin)
Chess SA id
164043578FIDE id
?Date of birth
1964-06-01 (Adult)Gender
MaleRegion
Sedibeng (GSV)Citizen
RSATitles
Chess SA registered
NoLast active game
2024-02-10Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1178.4 | 1174.6 | 1199 | 1199 |
| Raw rating | 1178.4 | 1174.6 | 1199 | 1199 |
| Weighted rating | 1178 | 1174.3 | 1199 | 1199 |
| Weighted performance | 0 | 0 | 0 | 0 |
| Floor | 699 | 699 | 699 | 699 |
| K-factor | 40 | 40 | 40 | 40 |
| Min/Max rating change allowed | 171 | 171.9 | 166.1 | 166.1 |
| Highest rating | 12002019-12-01 | 12002019-12-01 | 12002024-02-01 | 12002024-02-01 |
| Highest raw rating | 11992019-12-01 | 11992019-12-01 | 11992024-02-01 | 11992024-02-01 |
| Highest weighted rating | 11992024-11-01 | 11992024-11-01 | 11992024-11-01 | 11992024-11-01 |
| Highest weighted performance | 12002019-12-01 | 12002019-12-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0 | 0 |
| New rating | 1178.4 | 1174.6 | 1199 | 1199 |
| Analysis | ||||
| Rating | 1178.4 | 1174.6 | 1199 | 1199 |
| Raw rating | 1178.4 | 1174.6 | 1199 | 1199 |
| Weighted rating | 1178 | 1174.3 | 1199 | |
| Weighted performance | 0 | 0 | 0 | |
| K-factor | 40 | 40 | 40 | 40 |
| Floor | 699 | 699 | 699 | 699 |
| Max/Min rating change allowed | 171 | 171.9 | 166.1 | 166.1 |
| Games | 0 | 0 | 0 | 0 |
| Score | 0 | 0 | 0 | 0 |
| Expected score | 0 | 0 | 0 | 0 |
| Score-Expected | 0 | 0 | 0 | 0 |
| Temp raw +/- | 0 | 0 | 0 | 0 |
| Final raw +/- | 0 | 0 | 0 | 0 |
| New raw rating | 1178.4 | 1174.6 | 1199 | 1199 |
| New weighted rating | 1178.1 | 1174.3 | 1199 | 1199 |
| New weighted performance | 0 | 0 | 0 | 0 |
| Temp new rating | 1178.4 | 1174.6 | 1199 | 1199 |
| Temp new rating +/- | 0 | 0 | 0 | 0 |
| Final new rating +/- | 0 | 0 | 0 | 0 |
| New rating | 1178.4 | 1174.6 | 1199 | 1199 |
| New K-factor | 40 | 40 | 40 | 40 |
| New floor | 699 | 699 | 699 | 699 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 5 | 5 | 0 | 0 | |
| 4 | 4 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 102 | 102 | 0 | 0 |
| Games since | |||||||||||||||||
| Main5 | Standard5 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | Adult | ||||||||||||||||
| Region | Sedibeng (GSV) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Male | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Male | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Male | -1 | -1 | -1 | ||||||||||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 0 | 0 | 0 | 0 | 0 | 0 |
| Standard | 0 | 0 | 0 | 0 | 0 | 0 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 0 | 0 | 0 | 0 | 0 | 0 |
| Standard | 0 | 0 | 0 | 0 | 0 | 0 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 9 | 2 | 22.22 | -236.1 | 1360.6 | 1124.5 |
| Standard | 9 | 2 | 22.22 | -236.1 | 1360.6 | 1124.5 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-09-30 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-09-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-08-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-07-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-06-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-05-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-04-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-03-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-02-01 | 1178.4 | 1174.6 | 1199 | 1199 |
| 2025-01-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-12-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-11-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-10-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-09-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-08-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-07-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-06-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-08-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-04-01 | 1177.4 | 1173.8 | 1199 | 1199 |
| 2024-03-01 | 1178.4 | 1173.8 | 1199 | 1199 |
| 2024-02-01 | 1178.4 | 1173.8 | 1199 | 1199 |
| 2024-01-01 | 1178.4 | 1173.8 | 1199 | 1199 |
| 2023-12-01 | 1178.4 | 1173.8 | 1199 | 1199 |
| 2023-11-01 | 1178.4 | 1173.8 | 1199 | 1199 |
Comming soon.
Tournaments
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Laerskool Midvaal Chess Open Section 2024 (A) | 2024-02-10 | 2024-02-10 | Standard | Sedibeng (GSV) | 5 | 5 | 2 | Yes | Analysis |
| 2 | Eureka Open 2023 (C) | 2023-07-29 | 2023-07-29 | Standard | Sedibeng (GSV) | 5 | 4 | 0 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentLaerskool Midvaal Chess Open Section 2024 | TournamentLaerskool Midvaal Chess Open Section 2024 | ||||||
| date2024-02-10 | rnd4 | typeStandard | result1 | date2024-02-10 | rnd5 | typeStandard | result1 | ||
| OpponentSteyn, D (Donovan) | OpponentWilliams, A (Anika) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentLaerskool Midvaal Chess Open Section 2024 | TournamentLaerskool Midvaal Chess Open Section 2024 | ||||||
| date2024-02-10 | rnd4 | typeStandard | result1 | date2024-02-10 | rnd5 | typeStandard | result1 | ||
| OpponentSteyn, D (Donovan) | OpponentWilliams, A (Anika) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentLaerskool Midvaal Chess Open Section 2024 | TournamentLaerskool Midvaal Chess Open Section 2024 | ||||||
| date2024-02-10 | rnd4 | typeStandard | result1 | date2024-02-10 | rnd5 | typeStandard | result1 | ||
| OpponentSteyn, D (Donovan) | OpponentWilliams, A (Anika) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentLaerskool Midvaal Chess Open Section 2024 | TournamentLaerskool Midvaal Chess Open Section 2024 | ||||||
| date2024-02-10 | rnd4 | typeStandard | result1 | date2024-02-10 | rnd5 | typeStandard | result1 | ||
| OpponentSteyn, D (Donovan) | OpponentWilliams, A (Anika) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
Top 10 opponents most often played
| # | Opponent | Main | Standard | Rapid | Blitz | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | ||
| Aor | Prat | Aor | Prat | Aor | Prat | Aor | Prat | ||||||
| 1 | Steyn ,D (Donovan) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 2 | Zuidersma ,MJ (Marthinus Joachim) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1337.1 | 912.1 | 1388.6 | 912.1 | 0 | 0 | 0 | 0 | ||||||
| 3 | Kololo ,L (Lindiwe) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1413.1 | 988.1 | 1411 | 988.1 | 0 | 0 | 0 | 0 | ||||||
| 4 | Zimunya ,T (Tumisho) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1442 | 1017 | 1439.3 | 1017 | 0 | 0 | 0 | 0 | ||||||
| 5 | Williams ,A (Anika) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1410.7 | 1835.7 | 1407.2 | 1835.7 | 0 | 0 | 0 | 0 | ||||||
| 6 | Mini ,S (Siboniso) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1564.9 | 1139.9 | 1560.8 | 1139.9 | 0 | 0 | 0 | 0 | ||||||
| 7 | Mojapelo ,D (Dakalo) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1570.3 | 1145.3 | 1563.4 | 1145.3 | 0 | 0 | 0 | 0 | ||||||
| 8 | Rantso ,MP (Moiloa Petrus) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1311.4 | 886.4 | 1276 | 886.4 | 0 | 0 | 0 | 0 | ||||||
| 9 | Grove ,JJ (Jakobus Johannes) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 996 | 571 | 996 | 571 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|