2026 PBHS Open Chess Tournament (B)
Open SwissStandard
14 players participated in this 5-round tournament, held on 25 Apr 2026 in Pretoria, South Africa. Top 10 Elo average was 1576, and top seed was Oarabile Bogatsu (🇿🇦 RSA, 1644).
Luke Adamson (🇿🇦 RSA, 1566) won with 4.0/5, ahead of Ryder Thomson-Selibowitz (4.0) and Hendrik Johanne Weideman (4.0). Adamson won on tie-break after catching the field in the final round.
Location
🇿🇦Pretoria, South Africa
Dates
25 Apr 2026
Time control
Standard: 50 minutes with 10 seconds increment from move 1
System
Swiss · 5 rounds
Federations · 1 represented
🇿🇦South Africa×13
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsTight race until R4; 3 players tied at 4.0/5, decided on Buchholz.
Co-leaders
7
3
2
1
3
R4–R5 · LEAD HELD
Ryder Thomson-Selibowitz held the sole lead from R4 through R5 without losing it.
R5 · TIEBREAK CLUSTER
3 players finish on 4.0/5. Adamson takes the title on Buchholz Cut1 (12.5).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Ryder Thomson-Selibowitz lost to Hendrik Johanne Weideman (White).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Ryder Thomson-Selibowitz | * | 0 | 1 | — |
| 2Hendrik Johanne Weideman | 1 | * | — | 1 |
| 3Luke Adamson | 0 | — | * | — |
| 4Motlatjo Rapholo | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Adamson, Luke | 1566 | RSA | +7N | +6B | −2N | +8B | +5N | 4.0 | 12.5 | 14.5 | 10.50 | 1749 | +18.6 |
| 2 | Thomson-Selibowitz, Ryder | 1552 | RSA | +9B | +13N | +1B | +5N | −3B | 4.0 | 12.5 | 13.0 | 9.00 | 1825 | +68.0 |
| 3 | Weideman, Hendrik Johanne | 1592 | RSA | +14B | −5N | +11B | +4N | +2N | 4.0 | 11.5 | 12.0 | 9.00 | 1814 | +28.0 |
| 4 | Rapholo, Motlatjo | 1593 | RSA | +11N | =10B | +6N | −3B | +7B | 3.5 | 11.0 | 12.0 | 7.25 | 1733 | +18.6 |
| 5 | Marais, Nathan | 1557 | RSA | +8N | +3B | +10N | −2B | −1B | 3.0 | 14.0 | 15.5 | 7.50 | 1567 | +2.8 |
| 6 | Slabbert, Martin | 1603 | RSA | +13B | −1N | −4B | +11N | +9B | 3.0 | 10.0 | 10.5 | 3.00 | 1679 | +23.2 |
| 7 | Boshoff, Reinhardt | 1518 | RSA | −1B | =9N | +14B | +10B | −4N | 2.5 | 10.5 | 11.0 | 2.75 | 1573 | +15.6 |
| 8 | Haupt, Abigail | 0 | RSA | −5B | =14N | +9B | −1N | =13N | 2.0 | 9.0 | 9.5 | 2.00 | 1495 | 0.0 |
| 9 | Bogatsu, Oarabile | 1644 | RSA | −2N | =7B | −8N | +14B | −6N | 1.5 | 11.5 | 12.0 | 1.75 | 1455 | -42.0 |
| 10 | Mokoena, Tebogo | 1558 | RSA | +12B | =4N | −5B | −7N | F | 1.5 | 10.0 | 10.0 | 2.75 | 1282 | -40.4 |
| 11 | Swanepoel, Leja | 1544 | RSA | −4B | +12N | −3N | −6B | F | 1.0 | 11.5 | 11.5 | 1.00 | 792 | -71.6 |
| 12 | FIDE 534048324 | 0 | — | −10N | −11B | +13B | F | F | 1.0 | 3.0 | 3.0 | 0.50 | 1472 | 0.0 |
| 13 | Feuth, Alexander | 1547 | RSA | −6N | −2B | −12N | F | =8B | 0.5 | 10.0 | 10.0 | 1.00 | 776 | -39.2 |
| 14 | Westermann, Liezl | 1522 | RSA | −3N | =8B | −7N | −9N | F | 0.5 | 10.0 | 10.0 | 1.00 | 783 | -46.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Thomson-Selibowitz, RyderRSA+68.04.0 pts · #1
- 2Weideman, Hendrik JohanneRSA+28.04.0 pts · #2
- 3Slabbert, MartinRSA+23.23.0 pts · #4
Top rating losers
- 1Swanepoel, LejaRSA-71.61.0 pts · #14
- 2Westermann, LiezlRSA-46.80.5 pts · #13
- 3Bogatsu, OarabileRSA-42.01.5 pts · #9