Tunisian Chess Championship Open Under 20 -2026
16 players participated in this 9-round tournament, held from 20 Dec 2025 to 25 Dec 2025 in Gammarth, Tunis, Tunisia. 2 titled players. Top 10 Elo average was 1296, and top seed was Ahmed Zouaghi (🇹🇳 TUN, CM, 2005).
youssef Oueslati (🇹🇳 TUN, 0) won with 7.0/9, ahead of Sami Dahmani (7.0) and Youssef Jerraya (6.5). Oueslati won on tie-break after catching the field in the final round.
The biggest upset came in round 3: Youssef Jerraya (1544) beat Ahmed Zouaghi (CM, 2005), a +461-point gap.
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How it unfolded
Top 6 · 9 roundsTight race until R9; 2 players tied at 7.0/9, decided on Buchholz.
2 players finish on 7.0/9. Oueslati takes the title on Buchholz Cut1 (41.5).
youssef Oueslati lost to CM Sami Dahmani (Black).
youssef Oueslati 5 wins (R5–R9)CM Sami Dahmani 3 wins (R1–R3)Youssef Jerraya 5 wins (R1–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1youssef Oueslati | * | 0 | 1 | 1 |
| 2CMSami Dahmani | 1 | * | 0 | ½ |
| 3Youssef Jerraya | 0 | 1 | * | 1 |
| 4CMAhmed Zouaghi | 0 | ½ | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Oueslati, youssef | 0 | TUN | +11N | +6B | −2N | −7B | +14N | +9B | +3N | +4B | +12N | 7.0 | 41.5 | 43.5 | 32.00 | 1699 | 0.0 |
| 2 | Dahmani, SamiCM | 1789 | TUN | +16B | +15N | +1B | −3N | +12B | =4B | +6N | =7N | +8B | 7.0 | 39.5 | 40.0 | 28.00 | 1665 | -12.0 |
| 3 | Jerraya,Youssef | 1544 | TUN | +8B | +10N | +4N | +2B | +7N | =12B | −1B | +11N | −5N | 6.5 | 42.5 | 46.0 | 32.25 | 2461 | +62.6 |
| 4 | Zouaghi,AhmedCM | 2005 | TUN | +13B | +12N | −3B | +5N | +8B | =2N | +10B | −1N | +7B | 6.5 | 42.0 | 45.5 | 28.50 | 1791 | -19.2 |
| 5 | Laabidi,Rami | 0 | TUN | −10B | +16N | +13B | −4B | −9N | +8N | −7B | +14N | +3B | 5.0 | 36.0 | 36.5 | 17.00 | 1543 | 0.0 |
| 6 | El Ghozzi Ahmed | 1596 | TUN | +14B | −1N | −12B | −8N | +13B | +15N | −2B | +16N | +11B | 5.0 | 33.5 | 34.0 | 12.00 | 1709 | +8.6 |
| 7 | Chaabane, Ayoub | 1515 | TUN | −9N | +14B | +15B | +1N | −3B | −10N | +5N | =2B | −4N | 4.5 | 42.5 | 44.5 | 19.50 | 1379 | -26.4 |
| 8 | Mahmoud,Marouen | 0 | TUN | −3N | +11B | =14N | +6B | −4N | −5B | +16N | +9B | −2N | 4.5 | 40.5 | 41.0 | 15.00 | 1616 | 0.0 |
| 9 | Mechi, Kousay | 0 | TUN | +7B | −13N | +10B | −12N | +5B | −1N | +15B | −8N | =16B | 4.5 | 34.0 | 34.5 | 15.75 | 1529 | 0.0 |
| 10 | Ben amor, Anas | 1553 | TUN | +5N | −3B | −9N | +15B | +11N | +7B | −4N | −12B | F | 4.0 | 38.0 | 40.0 | 15.50 | 1629 | +11.6 |
| 11 | Chalghoumi, Ahmed | 1504 | TUN | −1B | −8N | +16B | +13N | −10B | +14N | +12N | −3B | −6N | 4.0 | 36.0 | 36.5 | 9.50 | 1345 | -32.0 |
| 12 | Aouina,Adem | 0 | TUN | F | −4B | +6N | +9B | −2N | =3N | −11B | +10N | −1B | 3.5 | 44.5 | 44.5 | 16.75 | 1608 | 0.0 |
| 13 | Reguigui, Maher | 1458 | TUN | −4N | +9B | −5N | −11B | −6N | +16B | =14B | +15N | F | 3.5 | 33.0 | 33.5 | 8.00 | 853 | -33.2 |
| 14 | Khemis, Mohamed Amine | 0 | TUN | −6N | −7N | =8B | +16N | −1B | −11B | =13N | −5B | −15B | 2.0 | 35.5 | 36.0 | 4.50 | 1196 | 0.0 |
| 15 | FIDE 5570557 | 0 | — | F | −2B | −7N | −10N | +16B | −6B | −9N | −13B | +14N | 2.0 | 31.0 | 31.0 | 2.50 | 782 | 0.0 |
| 16 | FIDE 5540658 | 0 | — | −2N | −5B | −11N | −14B | −15N | −13N | −8B | −6B | =9N | 0.5 | 35.5 | 37.5 | 2.25 | 787 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Jerraya,YoussefTUN+62.66.5 pts · #1
- 2Ben amor, AnasTUN+11.64.0 pts · #6
- 3El Ghozzi AhmedTUN+8.65.0 pts · #8
- 1Reguigui, MaherTUN-33.23.5 pts · #14
- 2Chalghoumi, AhmedTUN-32.04.0 pts · #11
- 3Chaabane, AyoubTUN-26.44.5 pts · #13
- R3+461 Elo gap
- R4+245 Elo gap