SBDCA TRIAL 5 2026 (U18)
Open SwissStandard
10 players participated in this 5-round tournament, held on 28 Feb 2026 in Graaff Reinet, South Africa. Top 10 Elo average was 291, and top seed was Andrew Theunissen (🇿🇦 RSA, 1478).
Andrew Theunissen (🇿🇦 RSA, 1478) won with 4.0/5, ahead of Lavanya Maziena (4.0). Theunissen won on tie-break after catching the field in the final round.
Location
🇿🇦Graaff Reinet, South Africa
Dates
28 Feb 2026
Time control
Standard: 60 minutes for game
System
Swiss · 5 rounds
Federations · 1 represented
🇿🇦South Africa×3
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsTight race until R5; 4 players tied at 4.0/5, decided on Buchholz.
Co-leaders
10
6
3
1
5
R5 · TIEBREAK CLUSTER
4 players finish on 4.0/5. Theunissen takes the title on Buchholz Cut1 (14.0).
R5 · HEAD-TO-HEAD · WINNER VS 2ND
Andrew Theunissen beat Lavanya Maziena (White).
WIN STREAKS · 2 top finishers
Lavanya Maziena 4 wins (R1–R4)FIDE 14398850 4 wins (R2–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Andrew Theunissen | * | 1 | 1 | — |
| 2Lavanya Maziena | 0 | * | — | 1 |
| 3FIDE 14398850 | 0 | — | * | — |
| 4FIDE 534043730 | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Theunissen, Andrew | 1478 | RSA | +3B | +10N | −6B | +7N | +2B | 4.0 | 14.0 | 16.0 | 13.00 | 2282 | +19.2 |
| 2 | Maziena, Lavanya | 1433 | RSA | +9N | +8B | +5N | +4B | −1N | 4.0 | 13.0 | 15.0 | 11.00 | 698 | -19.2 |
| 3 | FIDE 14398850 | 0 | — | −1N | +?B | +?N | +?B | +5N | 4.0 | 7.0 | 7.0 | 3.00 | 698 | 0.0 |
| 4 | FIDE 534043730 | 0 | — | +?B | +?N | +?B | −2N | +6B | 4.0 | 7.0 | 7.0 | 3.00 | 682 | 0.0 |
| 5 | FIDE 14398826 | 0 | — | +?B | +7N | −2B | +6N | −3B | 3.0 | 14.0 | 14.0 | 6.00 | 682 | 0.0 |
| 6 | Clarke, Gerda | 0 | RSA | +?N | +?B | +1N | −5B | −4N | 3.0 | 11.0 | 11.0 | 4.00 | 1518 | 0.0 |
| 7 | FIDE 534014640 | 0 | — | +?N | −5B | +8N | −1B | +9N | 3.0 | 11.0 | 11.0 | 4.00 | 698 | 0.0 |
| 8 | FIDE 14398729 | 0 | — | +?B | −2N | −7B | +?N | −?B | 2.0 | 7.0 | 7.0 | 0.00 | 682 | 0.0 |
| 9 | FIDE 534043764 | 0 | — | −2B | +?N | −?B | +?N | −7B | 2.0 | 7.0 | 7.0 | 0.00 | 682 | 0.0 |
| 10 | FIDE 534017020 | 0 | — | +?N | −1B | −?N | +?B | −?N | 2.0 | 4.0 | 4.0 | 0.00 | 698 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Theunissen, AndrewRSA+19.24.0 pts · #2
- 2Clarke, GerdaRSA0.03.0 pts · #1
- 3FIDE 143987290.02.0 pts · #3
Top rating losers
- 1Maziena, LavanyaRSA-19.24.0 pts · #4
- 2Clarke, GerdaRSA0.03.0 pts · #1
- 3FIDE 143987290.02.0 pts · #3