XIV Pan-American School Chess Championship 2025 STD U11 Open
26 players participated in this 9-round tournament, held from 30 Aug 2025 to 05 Sept 2025 in Florianopolis SC, Brazil. 3 titled players from 6 federations. Top 10 Elo average was 1795, and top seed was Daniel Paolo Gallegos Quispe (🇵🇪 PER, CM, 1928).
Arthur Botezeli Dorneles (🇧🇷 BRA, CM, 1794) won with 7.5/9, ahead of Daniel Paolo Gallegos Quispe (7.5) and Arthur Henrique Brunasso Batista (7.5). Dorneles shared the lead from round 7, winning on tie-break.
The biggest upset came in round 1: Mateo Josias Galeano Rolin (1460) beat Joao Pedro M Soares Da Silva (1663), a +203-point gap.
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How it unfolded
Top 6 · 9 roundsTight race until R9; 3 players tied at 7.5/9, decided on Buchholz.
3 players finish on 7.5/9. Dorneles takes the title on Buchholz Cut1 (46.5).
CM Arthur Botezeli Dorneles drew with CM Daniel Paolo Gallegos Quispe (Black).
CM Arthur Botezeli Dorneles 3+3 wins (R1–R3, R7–R9)CM Daniel Paolo Gallegos Quispe 4 wins (R1–R4)Arthur Henrique Brunasso Batista 3+3 wins (R1–R3, R7–R9)
Key matchups · top 4
Head-to-head between the four finishersGrille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Dorneles, Arthur BotezeliCM | 1794 | BRA | +17N | +21B | +5N | =3B | =2N | =4B | +8N | +9B | +6N | 7.5 | 46.5 | 49.5 | 38.50 | 2015 | +98.8 |
| 2 | Gallegos Quispe, Daniel PaoloCM | 1928 | PER | +23B | +6N | +10B | +9N | =1B | =3N | =4B | +5N | +11B | 7.5 | 46.5 | 49.0 | 38.00 | 2039 | +43.2 |
| 3 | Batista, Arthur Henrique Brunasso | 1769 | BRA | +16B | +25N | +6B | =1N | =4N | =2B | +5N | +10B | +9N | 7.5 | 46.0 | 48.0 | 37.00 | 2038 | +109.6 |
| 4 | Flesch, Lucas Henrique Ye | 1820 | BRA | +18B | +7N | =9B | +10N | =3B | =1N | =2N | +8B | +13N | 7.0 | 46.0 | 49.5 | 36.00 | 1961 | +58.8 |
| 5 | Munoz Feliz, AlejandroCM | 1848 | DOM | +12B | +26N | −1B | +7N | =8B | +9N | −3B | −2B | +10N | 5.5 | 46.0 | 46.5 | 21.50 | 1790 | -19.6 |
| 6 | Ayala Sanabria, Erick Benjamin | 1708 | PAR | +22N | −2B | −3N | +26B | =16N | +7B | +19N | +12N | −1B | 5.5 | 42.5 | 43.0 | 18.50 | 1690 | -5.8 |
| 7 | Lezonier, Arthur Groth | 0 | BRA | +14N | −4B | +13N | −5B | =11B | −6N | +18B | +16B | =8N | 5.0 | 40.5 | 44.0 | 21.25 | 1700 | 0.0 |
| 8 | Breitembach,Joao Gabriel | 1710 | BRA | +24B | −9N | +26B | +23N | =5N | +12B | −1B | −4N | =7B | 5.0 | 39.0 | 39.5 | 15.25 | 1732 | +12.4 |
| 9 | Mariani, Kim Paul | 1870 | BRA | +15N | +8B | =4N | −2B | +14N | −5B | +23N | −1N | −3B | 4.5 | 49.0 | 51.5 | 20.00 | 1741 | -57.6 |
| 10 | Pan, Julian | 1821 | CAN | +19N | +13B | −2N | −4B | +17N | =14B | +16N | −3N | −5B | 4.5 | 44.5 | 48.0 | 18.25 | 1701 | -52.8 |
| 11 | Da Silva, Joao Pedro M Soares | 1663 | BRA | −21N | −18B | +22N | +15B | =7N | −16B | +17N | +19B | −2N | 4.5 | 35.0 | 38.0 | 17.50 | 1586 | -34.0 |
| 12 | Carlesso, Kaua Murilo | 1579 | BRA | −5N | +22B | =21N | =17B | +18B | −8N | +14N | −6B | =16N | 4.5 | 35.0 | 38.0 | 16.50 | 1610 | +14.4 |
| 13 | Toffoli,Gustavo Pontel | 1684 | BRA | +20B | −10N | −7B | =16N | +25B | −19N | +21B | +23N | −4B | 4.5 | 33.0 | 35.0 | 13.00 | 1607 | -28.0 |
| 14 | Valverde Suarez, Aaron Josue | 1628 | ECU | −7B | =16N | +24B | +25N | −9B | =10N | −12B | =15N | +23B | 4.5 | 32.0 | 34.0 | 13.50 | 1635 | +3.6 |
| 15 | Ayala Espinoza, Sebastian Alejandro | 1583 | PER | −9B | =24N | −16B | −11N | +20B | =25N | +22B | =14B | +19N | 4.5 | 30.0 | 32.0 | 14.50 | 1589 | +4.8 |
| 16 | Lino Prieto, Joaquin | 1504 | ECU | −3N | =14B | +15N | =13B | =6B | +11N | −10B | −7N | =12B | 4.0 | 40.5 | 45.0 | 18.50 | 1677 | +70.0 |
| 17 | Cantanhede Garcez, Henrique Haiashi Viana | 1559 | BRA | −1B | =23N | +20B | =12N | −10B | −21N | −11B | +26N | +18B | 4.0 | 33.5 | 34.0 | 11.00 | 1562 | +0.4 |
| 18 | Nunes, Lino Dias | 1569 | BRA | −4N | +11N | =25B | +21B | −12N | −23B | −7N | +24B | −17N | 3.5 | 33.0 | 35.0 | 11.00 | 1547 | -8.0 |
| 19 | Gonzalez Mendez, Martin Ezequiel | 1575 | PAR | −10B | =20N | −23B | +24N | +26N | +13B | −6B | −11N | −15B | 3.5 | 32.0 | 32.5 | 9.25 | 1532 | -17.1 |
| 20 | Figueiredo, Bryan da Silva | 1464 | BRA | −13N | =19B | −17N | =22B | −15N | =24N | +26B | =21B | =25N | 3.5 | 27.0 | 27.5 | 7.50 | 1459 | -4.8 |
| 21 | Galeano Rolin, Mateo Josias | 1460 | PAR | +11B | −1N | =12B | −18N | F | +17B | −13N | =20N | −22B | 3.0 | 35.0 | 37.5 | 12.50 | 1516 | +17.2 |
| 22 | Gomez Monteverde, Benjamin Jose | 1481 | PER | −6B | −12N | −11B | =20N | =24B | =26N | −15N | =25B | +21N | 3.0 | 30.0 | 30.5 | 7.25 | 1414 | -45.2 |
| 23 | Netto, Andre Ferreira | 1605 | PAR | −2N | =17B | +19N | −8B | F | +18N | −9B | −13B | −14N | 2.5 | 37.0 | 40.0 | 9.00 | 1548 | -27.6 |
| 24 | Lelinski, Bernardo | 1495 | BRA | −8N | =15B | −14N | −19B | =22N | =20B | +25B | −18N | F | 2.5 | 29.5 | 30.0 | 7.50 | 1345 | -50.4 |
| 25 | Cevada, Guilherme Henrique Dirami | 0 | BRA | F | −3B | =18N | −14B | −13N | =15B | −24N | =22N | =20B | 2.0 | 33.5 | 33.5 | 7.25 | 1393 | 0.0 |
| 26 | Correia, Vinicius Beling | 1498 | BRA | F | −5B | −8N | −6N | −19B | =22B | −20N | −17B | F | 0.5 | 32.5 | 32.5 | 1.50 | 1204 | -76.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Batista, Arthur Henrique BrunassoBRA+109.67.5 pts · #3
- 2Dorneles, Arthur BotezeliCMBRA+98.87.5 pts · #1
- 3Lino Prieto, JoaquinECU+70.04.0 pts · #15
- 1Correia, Vinicius BelingBRA-76.00.5 pts · #26
- 2Mariani, Kim PaulBRA-57.64.5 pts · #10
- 3Pan, JulianCAN-52.84.5 pts · #8
- R1+203 Elo gap
- R6+159 Elo gap
- R6+109 Elo gap