NMBCU Open 2025 (B)
Open SwissStandard
44 players participated in this 6-round tournament, held from 23 May 2025 to 25 May 2025 in Gqeberha, South Africa. Top 10 Elo average was 1589, and top seed was Ababalwe Mathebe (🇿🇦 RSA, 1704).
Sebastian Kapp (🇿🇦 RSA, 1606) won with 5.0/6, ahead of Spiro Clainos (5.0) and Jared CHIPUNZA (4.5). Kapp shared the lead from round 1, winning on tie-break.
The biggest upset came in round 2: Levi Blandy (1413) beat Deacon Dugmore (1583), a +170-point gap.
Location
🇿🇦Gqeberha, South Africa
Dates
23 May 2025 → 25 May 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Federations · 1 represented
🇿🇦South Africa×39
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsTight race until R5; 2 players tied at 5.0/6, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.
Co-leaders
18
6
4
2
1
2
R5–R6 · LEAD HELD
Sebastian Kapp held the sole lead from R5 through R6 without losing it.
R6 · TIEBREAK CLUSTER
2 players finish on 5.0/6. Kapp takes the title on Buchholz Cut1 (19.0).
R6 · HEAD-TO-HEAD · WINNER VS 2ND
Sebastian Kapp lost to Spiro Clainos (Black).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Sebastian Kapp | * | 0 | — | — |
| 2Spiro Clainos | 1 | * | — | — |
| 3Jared CHIPUNZA | — | — | * | — |
| 4Sibonelo Mangala | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Kapp, Sebastian | 1606 | RSA | +18B | +20N | +19B | +12N | +4B | −2N | 5.0 | 19.0 | 22.0 | 17.00 | 1753 | +39.6 |
| 2 | Clainos, Spiro | 1584 | RSA | +34N | =13B | +33N | =14B | +32N | +1B | 5.0 | 16.0 | 18.0 | 14.50 | 1776 | +35.3 |
| 3 | CHIPUNZA, Jared | 1552 | RSA | +15N | +9B | +5N | −4B | =6N | +21B | 4.5 | 21.0 | 24.0 | 17.25 | 1693 | +42.4 |
| 4 | Step, Nicholas | 1489 | RSA | +22B | +8N | +39B | +3N | −1N | =7B | 4.5 | 21.0 | 22.0 | 14.75 | 1661 | +44.1 |
| 5 | Oliphant, Yomelele | 1497 | RSA | +38B | +43N | −3B | +18N | =12B | +13N | 4.5 | 15.5 | 15.5 | 9.25 | 1637 | +37.6 |
| 6 | Coetzee, Schalk | 1482 | RSA | −41N | +30B | +24N | +34B | =3B | +12N | 4.5 | 15.0 | 16.0 | 12.75 | 1556 | +11.2 |
| 7 | Mangala, Sibonelo | 1582 | RSA | +35N | =33B | =32N | +39B | +8N | =4N | 4.5 | 14.5 | 15.5 | 11.25 | 1725 | +34.0 |
| 8 | George, Panashe | 1401 | RSA | +37B | −4B | +25N | +22N | −7B | +19N | 4.0 | 17.5 | 19.5 | 10.50 | 1375 | -4.4 |
| 9 | Brown, Nathan | 1474 | RSA | +36B | −3N | =26B | =35N | +22B | +18N | 4.0 | 15.0 | 17.0 | 10.25 | 1507 | +5.6 |
| 10 | Arbi, Imaan | 0 | RSA | −25N | −24B | +?N | +15B | +28N | +32B | 4.0 | 13.0 | 13.0 | 8.00 | 1559 | 0.0 |
| 11 | Schultz, Jade | 0 | RSA | F | −36N | +40B | +38N | +23B | +20N | 4.0 | 10.0 | 10.0 | 8.00 | 1553 | 0.0 |
| 12 | Blandy, Levi | 1413 | RSA | +27N | +14B | +13N | −1B | =5N | −6B | 3.5 | 21.0 | 23.5 | 11.75 | 1578 | +54.8 |
| 13 | Lindi, Vukile | 1551 | RSA | +40B | =2N | −12B | +26N | +14N | −5B | 3.5 | 19.0 | 20.0 | 9.50 | 1433 | -27.2 |
| 14 | Dugmore, Deacon | 1583 | RSA | +16B | −12N | +38B | =2N | −13B | +29N | 3.5 | 18.0 | 19.0 | 9.50 | 1420 | -35.6 |
| 15 | Ackerdien, Saud | 1449 | RSA | −3B | =16N | +17B | −10N | +42B | +35N | 3.5 | 17.5 | 18.0 | 7.75 | 1627 | +28.4 |
| 16 | Prins, Joshua | 0 | RSA | −14N | =15B | −28N | +?B | +25N | +27B | 3.5 | 14.5 | 14.5 | 6.75 | 1387 | 0.0 |
| 17 | McLachlan, Geoffrey | 1429 | RSA | F | =21B | −15N | +40N | +26B | +24B | 3.5 | 12.5 | 12.5 | 7.50 | 1336 | -9.6 |
| 18 | Bothma, Jaculene | 1445 | RSA | −1N | +31B | +42N | −5B | +34N | −9B | 3.0 | 18.0 | 18.5 | 5.00 | 726 | -47.2 |
| 19 | ADAMS, Ciara | 1425 | RSA | +24N | +25B | −1N | =29B | =21N | −8B | 3.0 | 17.0 | 19.5 | 7.75 | 1266 | -22.0 |
| 20 | Prinsloo, Liam | 1519 | RSA | +31N | −1B | +27N | −32B | +29N | −11B | 3.0 | 16.5 | 18.5 | 7.50 | 1411 | -17.2 |
| 21 | CHIPUNZA, Jaden | 1611 | RSA | =32B | =17N | =35B | +33N | =19B | −3N | 3.0 | 15.0 | 17.0 | 7.25 | 1433 | -47.6 |
| 22 | Murray, Chloe | 0 | RSA | −4N | +44B | +?N | −8B | −9N | +33B | 3.0 | 14.5 | 14.5 | 2.00 | 656 | 0.0 |
| 23 | Arries, Jayde | 1480 | RSA | −26N | −27B | +44N | +31B | −11N | +34B | 3.0 | 13.5 | 13.5 | 4.50 | 609 | -24.0 |
| 24 | Bownes, Fabian | 0 | RSA | −19B | +10N | −6B | =42N | +30B | −17N | 2.5 | 17.5 | 18.0 | 6.75 | 646 | 0.0 |
| 25 | Bosch, Rayhaan | 0 | RSA | +10B | −19N | −8B | =30N | −16B | +42N | 2.5 | 17.0 | 17.5 | 5.75 | 615 | 0.0 |
| 26 | Ndayi, Siyolise | 0 | RSA | +23B | F | =9N | −13B | −17N | +37B | 2.5 | 16.0 | 18.0 | 7.00 | 1397 | 0.0 |
| 27 | Botlhole, Erato | 1409 | RSA | −12B | +23N | −20B | +43N | =33B | −16N | 2.5 | 15.0 | 15.0 | 4.00 | 1346 | -9.6 |
| 28 | Heneke, Ruan | 1454 | RSA | F | −38N | +16B | +36N | −10B | =31B | 2.5 | 13.0 | 13.0 | 6.75 | 679 | -18.8 |
| 29 | Norris, Nathan | 0 | RSA | F | +40N | +36B | =19N | −20B | −14B | 2.5 | 12.5 | 12.5 | 4.50 | 1236 | 0.0 |
| 30 | FIDE 14361000 | 0 | — | F | −6N | +37B | =25B | −24N | +?B | 2.5 | 11.5 | 11.5 | 3.25 | 682 | 0.0 |
| 31 | FIDE 14370050 | 0 | — | −20B | −18N | +?B | −23N | +43B | =28N | 2.5 | 11.5 | 11.5 | 1.25 | 1153 | 0.0 |
| 32 | Cona, Shaunwin | 1593 | RSA | =21N | F | =7B | +20N | −2B | −10N | 2.0 | 19.5 | 22.0 | 6.75 | 1574 | -4.4 |
| 33 | Arries, Keaton | 0 | RSA | +?B | =7N | −2B | −21B | =27N | −22N | 2.0 | 18.0 | 18.0 | 3.50 | 1354 | 0.0 |
| 34 | Sonti, Khwezi | 0 | RSA | −2B | +37N | +43B | −6N | −18B | −23N | 2.0 | 17.5 | 17.5 | 2.00 | 698 | 0.0 |
| 35 | Sonti, Kamvalethu | 1523 | RSA | −7B | F | =21N | =9B | +39N | −15B | 2.0 | 16.0 | 16.0 | 4.50 | 1434 | -24.8 |
| 36 | FIDE 14362740 | 0 | — | −9N | +11B | −29N | −28B | +?N | F | 2.0 | 14.0 | 14.0 | 4.00 | 665 | 0.0 |
| 37 | Smile, Osakhe | 0 | RSA | −8N | −34B | −30N | +44B | +38B | −26N | 2.0 | 12.0 | 12.0 | 1.00 | 1441 | 0.0 |
| 38 | Koutsouvelis, Joshua | 1480 | RSA | −5N | +28B | −14N | −11B | −37N | F | 1.0 | 16.5 | 16.5 | 2.50 | 1386 | -14.4 |
| 39 | Van Greunen, Melaney | 1413 | RSA | +42B | F | −4N | −7N | −35B | F | 1.0 | 13.5 | 13.5 | 0.50 | 732 | -41.2 |
| 40 | Du Toit, Hayden | 0 | RSA | −13N | −29B | −11N | −17B | F | +43N | 1.0 | 13.5 | 13.5 | 0.00 | 690 | 0.0 |
| 41 | Mathebe, Ababalwe | 1704 | RSA | +6B | F | F | F | F | F | 1.0 | 4.5 | 4.5 | 4.50 | 2282 | +8.8 |
| 42 | Ferreira, Kyle | 0 | RSA | −39N | F | −18B | =24B | −15N | −25B | 0.5 | 12.5 | 12.5 | 1.25 | 636 | 0.0 |
| 43 | FIDE 534024522 | 0 | — | F | −5B | −34N | −27B | −31N | −40B | 0.0 | 12.5 | 12.5 | 0.00 | 653 | 0.0 |
| 44 | FIDE 534024476 | 0 | — | F | −22N | −23B | −37N | F | F | 0.0 | 8.0 | 8.0 | 0.00 | 680 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Blandy, LeviRSA+54.83.5 pts · #6
- 2Step, NicholasRSA+44.14.5 pts · #4
- 3CHIPUNZA, JaredRSA+42.44.5 pts · #2
Top rating losers
- 1CHIPUNZA, JadenRSA-47.63.0 pts · #11
- 2Bothma, JaculeneRSA-47.23.0 pts · #39
- 3Van Greunen, MelaneyRSA-41.21.0 pts · #32
Biggest upsets
- R2+170 Elo gap
- R3+138 Elo gap