Campeonato Nacional Categorias Menores Pares 2026 U12 Absoluto
Open SwissStandard
46 players participated in this 7-round tournament, held from 20 Feb 2026 to 22 Feb 2026 in San Jose, Costa Rica. Top 10 Elo average was 1583, and top seed was David Gabriel Orna Chaves (🇨🇷 CRC, 1657).
David Gabriel Orna Chaves (🇨🇷 CRC, 1657) won with 6.0/7, ahead of Santiago Alejandro Gomez Rodriguez (6.0) and Isaac Antonio Leiva Coto (5.0). Orna Chaves won on tie-break after catching the field in the final round.
The biggest upset came in round 5: Thomas David Romero Pereira (1486) beat Gabriel Gonzalez Arguedas (1600), a +114-point gap.
Location
🇨🇷San Jose, Costa Rica
Dates
20 Feb 2026 → 22 Feb 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Federations · 1 represented
🇨🇷Costa Rica×22
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsTight race until R7; 2 players tied at 6.0/7, decided on Buchholz.
Co-leaders
27
13
6
1
1
1
2
R7 · TIEBREAK CLUSTER
2 players finish on 6.0/7. Orna Chaves takes the title on Buchholz Cut1 (30.0).
R7 · HEAD-TO-HEAD · WINNER VS 2ND
David Gabriel Orna Chaves beat Santiago Alejandro Gomez Rodriguez (White).
WIN STREAKS · 3 top finishers
David Gabriel Orna Chaves 3 wins (R1–R3)Santiago Alejandro Gomez Rodriguez 6 wins (R1–R6)Thomas David Romero Pereira 4 wins (R2–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1David Gabriel Orna Chaves | * | 1 | ½ | — |
| 2Santiago Alejandro Gomez Rodriguez | 0 | * | — | 1 |
| 3Thomas David Romero Pereira | ½ | — | * | — |
| 4Azael Augusto Baquero Graterol | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Orna Chaves, David Gabriel | 1657 | CRC | +34N | +21B | +5N | =3B | +4N | =6B | +2B | 6.0 | 30.0 | 33.0 | 28.00 | 1761 | +22.4 |
| 2 | Gomez Rodriguez, Santiago Alejandro | 1592 | CRC | +37N | +15B | +11N | +16B | +3N | +10B | −1N | 6.0 | 29.0 | 31.5 | 25.50 | 1729 | +22.0 |
| 3 | Leiva Coto, Isaac Antonio | 1560 | CRC | +14B | +45N | +13B | =1N | −2B | +23N | =6N | 5.0 | 29.5 | 30.5 | 19.00 | 1451 | -17.6 |
| 4 | Morales Vasquez, Thiago Marcel | 1626 | CRC | +27B | +20N | +17B | =7N | −1B | +16B | =10N | 5.0 | 28.0 | 31.5 | 20.50 | 1434 | -20.0 |
| 5 | Aldana Cardenas, Samuel David | 0 | CRC | +36B | +28N | −1B | +?N | =9B | =8N | +17B | 5.0 | 26.5 | 26.5 | 15.50 | 1449 | 0.0 |
| 6 | Romero Pereira, Thomas David | 1486 | CRC | F | +41B | +18N | +20N | +15B | =1N | =3B | 5.0 | 25.0 | 25.0 | 19.50 | 1729 | +38.4 |
| 7 | Orna Chaves, Alejandro Jesus | 1643 | CRC | +31B | +30N | +22N | =4B | −10N | =18B | +16N | 5.0 | 24.5 | 27.5 | 18.00 | 1787 | +18.8 |
| 8 | Vargas Viquez, Santiago | 1575 | CRC | +46N | −16B | +29N | =26B | +22N | =5B | +15N | 5.0 | 23.0 | 24.0 | 15.75 | 2400 | +22.8 |
| 9 | Vargas Vargas, Yeison David | 1517 | CRC | F | +24B | +27N | +45B | =5N | =11B | +18N | 5.0 | 22.0 | 22.0 | 17.00 | 2222 | +14.4 |
| 10 | Baquero Graterol, Azael Augusto | 0 | CRC | +12B | +?N | =?B | +?N | +7B | −2N | =4B | 5.0 | 21.0 | 21.0 | 12.50 | 1605 | 0.0 |
| 11 | Villalobos Garcia, Fabricio | 0 | CRC | +19B | +?N | −2B | +?N | =23B | =9N | +?B | 5.0 | 18.5 | 18.5 | 8.25 | 1571 | 0.0 |
| 12 | Acuna Porras, Fabio | 0 | CRC | −10N | +?B | +?N | −15B | +45N | +30B | +25B | 5.0 | 16.5 | 16.5 | 7.50 | 1576 | 0.0 |
| 13 | FIDE 6571972 | 0 | — | +43B | +?N | −3N | −23B | =?B | +28N | +?B | 4.5 | 14.0 | 14.0 | 5.50 | 1578 | 0.0 |
| 14 | FIDE 6566618 | 0 | — | −3N | −?B | +41N | +?B | +?N | =?B | +45N | 4.5 | 8.0 | 8.0 | 3.00 | 1343 | 0.0 |
| 15 | Gonzalez Arguedas, Gabriel | 1600 | CRC | +33B | −2N | +19B | +12N | −6N | +34B | −8B | 4.0 | 28.0 | 31.0 | 15.00 | 743 | -69.2 |
| 16 | Sato, Luca | 0 | CRC | +?B | +8N | +?B | −2N | +17B | −4N | −7B | 4.0 | 25.0 | 25.0 | 9.00 | 1401 | 0.0 |
| 17 | Villalta Pizarro, Emanuel Isaac | 0 | CRC | +40N | +23B | −4N | +?B | −16N | +26B | −5N | 4.0 | 23.0 | 23.0 | 9.00 | 828 | 0.0 |
| 18 | Viera Jara, Marcelo Emmanuel | 0 | CRC | +?N | =29B | −6B | +31N | +?B | =7N | −9B | 4.0 | 21.0 | 21.0 | 7.00 | 1467 | 0.0 |
| 19 | FIDE 6575803 | 0 | — | −11N | +?B | −15N | +42B | −29N | +?B | +30N | 4.0 | 17.0 | 17.0 | 5.00 | 1580 | 0.0 |
| 20 | FIDE 6566685 | 0 | — | +?N | −4B | +?N | −6B | =27N | =32B | +?N | 4.0 | 16.5 | 16.5 | 3.25 | 758 | 0.0 |
| 21 | FIDE 6570224 | 0 | — | +?B | −1N | +35B | F | F | +33N | +40B | 4.0 | 14.0 | 14.0 | 8.00 | 848 | 0.0 |
| 22 | FIDE 6566081 | 0 | — | F | +35N | −7B | =?N | −8B | +29B | +26N | 3.5 | 22.0 | 22.0 | 9.50 | 777 | 0.0 |
| 23 | FIDE 6571077 | 0 | — | +39B | −17N | +?B | +13N | =11N | −3B | −?N | 3.5 | 20.5 | 20.5 | 9.00 | 736 | 0.0 |
| 24 | Chaves Solano, Alonso | 1416 | CRC | =44B | −9N | +39B | −28N | +31B | −25N | +38B | 3.5 | 19.5 | 21.0 | 8.25 | 728 | -14.4 |
| 25 | Navarro Torres, Juan David | 0 | CRC | F | +44N | =31B | +29B | −26N | +24B | −12N | 3.5 | 19.5 | 19.5 | 9.50 | 1442 | 0.0 |
| 26 | Castillo Mendez, Anthony Alberto | 0 | CRC | +?B | −?N | +33B | =8N | +25B | −17N | −22B | 3.5 | 19.0 | 19.0 | 9.00 | 1547 | 0.0 |
| 27 | FIDE 6576150 | 0 | — | −4N | +32B | −9B | +?N | =20B | −?N | +43B | 3.5 | 19.0 | 19.0 | 7.00 | 783 | 0.0 |
| 28 | Montoya Ibanez, Oscar Santiago | 0 | CRC | +?N | −5B | −?N | +24B | =32N | −13B | +37N | 3.5 | 18.5 | 18.5 | 7.50 | 1442 | 0.0 |
| 29 | FIDE 6570208 | 0 | — | +?B | =18N | −8B | −25N | +19B | −22N | =31B | 3.0 | 23.0 | 23.0 | 7.50 | 747 | 0.0 |
| 30 | Loria Schnitzler, Marcelo | 1576 | CRC | +32N | −7B | F | +36N | +40B | −12N | −19B | 3.0 | 22.0 | 22.0 | 8.00 | 806 | -17.6 |
| 31 | Blanco Chacin, Santiago Alejandro | 0 | CRC | −7N | +?B | =25N | −18B | −24N | +?B | =29N | 3.0 | 19.0 | 19.0 | 3.25 | 714 | 0.0 |
| 32 | FIDE 6580319 | 0 | — | −30B | −27N | +46N | +44B | =28B | =20N | −34N | 3.0 | 18.5 | 19.5 | 6.25 | 760 | 0.0 |
| 33 | FIDE 6569072 | 0 | — | −15N | +37B | −26N | −?B | +42N | −21B | +39N | 3.0 | 18.0 | 18.0 | 6.50 | 755 | 0.0 |
| 34 | FIDE 6572006 | 0 | — | −1B | −?N | +?B | +39N | F | −15N | +32B | 3.0 | 15.0 | 15.0 | 5.00 | 824 | 0.0 |
| 35 | FIDE 6573339 | 0 | — | +?N | −22B | −21N | −37B | +?B | −40N | +?B | 3.0 | 12.0 | 12.0 | 0.00 | 1529 | 0.0 |
| 36 | FIDE 6572677 | 0 | — | −5N | −?B | +?N | −30B | +?N | −45B | +?N | 3.0 | 9.0 | 9.0 | 0.00 | 735 | 0.0 |
| 37 | FIDE 6569250 | 0 | — | −2B | −33N | +44B | +35N | −?B | =38N | −28B | 2.5 | 19.5 | 19.5 | 5.75 | 793 | 0.0 |
| 38 | FIDE 6562787 | 0 | — | F | F | F | +?B | +39N | =37B | −24N | 2.5 | 11.5 | 11.5 | 3.25 | 622 | 0.0 |
| 39 | FIDE 6580351 | 0 | — | −23N | +40B | −24N | −34B | −38B | +?N | −33B | 2.0 | 17.5 | 17.5 | 2.00 | 622 | 0.0 |
| 40 | FIDE 6560458 | 0 | — | −17B | −39N | +?B | F | −30N | +35B | −21N | 2.0 | 16.0 | 16.0 | 3.00 | 760 | 0.0 |
| 41 | FIDE 6570798 | 0 | — | −?B | −6N | −14B | −?N | +?B | +?N | −42N | 2.0 | 11.5 | 11.5 | 0.00 | 741 | 0.0 |
| 42 | FIDE 6580327 | 0 | — | F | −?N | −?B | −19N | −33B | +?N | +41B | 2.0 | 9.0 | 9.0 | 2.00 | 793 | 0.0 |
| 43 | FIDE 6574327 | 0 | — | −13N | −?B | +?N | +?B | −?N | −?B | −27N | 2.0 | 8.0 | 8.0 | 0.00 | 709 | 0.0 |
| 44 | FIDE 6580122 | 0 | — | =24N | −25B | −37N | −32N | +46B | −?B | −?N | 1.5 | 13.5 | 13.5 | 2.75 | 1422 | 0.0 |
| 45 | FIDE 6563660 | 0 | — | F | −3B | F | −9N | −12B | +36N | −14B | 1.0 | 22.5 | 22.5 | 3.00 | 746 | 0.0 |
| 46 | FIDE 6575250 | 0 | — | −8B | −?N | −32B | −?N | −44N | +?B | F | 1.0 | 9.5 | 9.5 | 0.00 | 747 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Romero Pereira, Thomas DavidCRC+38.45.0 pts · #2
- 2Vargas Viquez, SantiagoCRC+22.85.0 pts · #9
- 3Orna Chaves, David GabrielCRC+22.46.0 pts · #1
Top rating losers
- 1Gonzalez Arguedas, GabrielCRC-69.24.0 pts · #42
- 2Morales Vasquez, Thiago MarcelCRC-20.05.0 pts · #20
- 3Leiva Coto, Isaac AntonioCRC-17.65.0 pts · #18
Biggest upsets
- R5+114 Elo gap