XII Torneo de Ajedrez Narciso Rabell Mendez In Memoriam Clase B (U1800)
27 players participated in this 5-round tournament, held from 16 Jan 2026 to 18 Jan 2026 in San Sebastian, Puerto Rico. 3 federations represented. Top 10 Elo average was 1733, and top seed was Gamalier Matos Santoni (🇵🇷 PUR, 1794).
Alberto Llanos Martinez (🇵🇷 PUR, 0) won with 4.0/5, ahead of Rubiela Sanchez Penagos (4.0) and Ezequiel Gerena Rivas (4.0). Llanos Martinez won on tie-break after catching the field in the final round.
The biggest upset came in round 4: Abel Gonzalez Segarra (1490) beat Antonio J. Bennazar Nin (1689), a +199-point gap.
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How it unfolded
Top 6 · 5 roundsTight race until R5; 3 players tied at 4.0/5, decided on Buchholz.
3 players finish on 4.0/5. Llanos Martinez takes the title on Buchholz Cut1 (11.5).
Ezequiel Gerena Rivas 3 wins (R2–R4)Rubiela Sanchez Penagos 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Alberto Llanos Martinez | * | — | — | — |
| 2Ezequiel Gerena Rivas | — | * | — | ½ |
| 3Rubiela Sanchez Penagos | — | — | * | — |
| 4Gamalier Matos Santoni | — | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Llanos Martinez, Alberto | 0 | PUR | +20N | =5B | =8N | +12B | +11N | 4.0 | 11.5 | 13.0 | 9.75 | 1770 | 0.0 |
| 2 | Sanchez Penagos, Rubiela | 1719 | COL | +21N | −12B | +14N | +9B | +8N | 4.0 | 10.5 | 12.0 | 9.50 | 1702 | -0.6 |
| 3 | Gerena Rivas, Ezequiel | 1789 | PUR | =18N | +23B | +12N | +11B | =4B | 4.0 | 10.0 | 11.0 | 8.50 | 1885 | +12.2 |
| 4 | Matos Santoni, Gamalier | 1794 | PUR | F | +9B | +18N | +5B | =3N | 3.5 | 12.0 | 12.0 | 10.00 | 1954 | +12.2 |
| 5 | Deliz Lopez, Adan G. | 1784 | PUR | +16B | =1N | +17B | −4N | +18B | 3.5 | 11.0 | 12.5 | 7.00 | 1703 | -4.2 |
| 6 | Hernandez Betancourt, David J. | 1565 | PUR | +26B | +7N | =11N | −8B | +19N | 3.5 | 10.5 | 11.0 | 6.75 | 1750 | +28.4 |
| 7 | Ruiz Jimenez, Frankie E. | 1732 | PUR | +14N | −6B | +15N | =19B | +17B | 3.5 | 9.0 | 10.5 | 6.25 | 1644 | -12.0 |
| 8 | Baralt Campos, Jose G. | 1726 | PUR | +25B | =17N | =1B | +6N | −2B | 3.0 | 13.0 | 14.0 | 7.25 | 1643 | -4.4 |
| 9 | Zeno Miranda, Fernando | 0 | PUR | +24B | −4N | +13B | −2N | +23B | 3.0 | 11.0 | 12.0 | 4.50 | 1675 | 0.0 |
| 10 | Gonzalez Segarra, Abel | 1490 | PUR | −11N | +21B | −22N | +20B | +15N | 3.0 | 7.5 | 9.0 | 5.00 | 1672 | +18.2 |
| 11 | Marrero Perez, Radames J. | 1792 | PUR | +10B | +13N | =6B | −3N | −1B | 2.5 | 14.5 | 17.0 | 7.25 | 1718 | -13.2 |
| 12 | Lajara Rodriguez, Jeffry | 1562 | PUR | +27B | +2N | −3B | −1N | =13B | 2.5 | 14.5 | 14.5 | 5.25 | 1717 | +24.4 |
| 13 | Luna Colon, Eliseo | 1643 | PUR | +19N | −11B | −9N | +16B | =12N | 2.5 | 10.0 | 11.5 | 4.75 | 1608 | -2.8 |
| 14 | Lajara Mattei, Jeffrei | 1444 | PUR | −7B | +27N | −2B | =24N | =22N | 2.0 | 10.0 | 10.0 | 1.25 | 1463 | +2.0 |
| 15 | Stuart, Sean | 1565 | PUR | F | +26N | −7B | +27N | −10B | 2.0 | 8.5 | 8.5 | 0.50 | 812 | -33.6 |
| 16 | Perez Perez, Danay | 1470 | PUR | −5N | F | +26B | −13N | +27B | 2.0 | 8.0 | 8.0 | 0.50 | 914 | -8.2 |
| 17 | Tavhare Mashere, Suraj | 0 | PUR | F | =8B | −5N | +22B | −7N | 1.5 | 12.0 | 13.5 | 3.00 | 1638 | 0.0 |
| 18 | Fuentes Aledo, Jeremy | 1470 | PUR | =3B | +24N | −4B | F | −5N | 1.5 | 12.0 | 13.0 | 3.00 | 1633 | +26.4 |
| 19 | Perez Rosa, Wilfredo | 0 | PUR | −13B | F | +20N | =7N | −6B | 1.5 | 11.5 | 13.0 | 3.25 | 1571 | 0.0 |
| 20 | Bennazar Nin, Antonio J. | 1689 | PUR | −1B | +25N | −19B | −10N | =21B | 1.5 | 10.0 | 11.0 | 1.75 | 691 | -15.2 |
| 21 | Colon Torres, Orlando | 0 | PUR | −2B | −10N | =24B | =26N | =20N | 1.5 | 9.5 | 10.0 | 1.50 | 1410 | 0.0 |
| 22 | Delgado Delgado, Edwin G. | 1659 | PUR | F | F | +10B | −17N | =14B | 1.5 | 6.5 | 6.5 | 4.00 | 1660 | 0.0 |
| 23 | Berrios Rivera, Mario | 1606 | PUR | F | −3N | +25B | F | −9N | 1.0 | 9.5 | 9.5 | 1.00 | 989 | -10.4 |
| 24 | Quinones Gonzalez, Pedro Felipe | 1514 | PUR | −9N | −18B | =21N | =14B | −25N | 1.0 | 8.0 | 9.0 | 1.75 | 1264 | -26.4 |
| 25 | Castillo, Osiel | 0 | USA | −8N | −20B | −23N | F | +24B | 1.0 | 6.5 | 6.5 | 1.00 | 1441 | 0.0 |
| 26 | FIDE 3119807 | 0 | — | −6N | −15B | −16N | =21B | F | 0.5 | 9.0 | 9.0 | 0.75 | 728 | 0.0 |
| 27 | FIDE 3114481 | 0 | — | −12N | −14B | F | −15B | −16N | 0.0 | 8.5 | 8.5 | 0.00 | 705 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Hernandez Betancourt, David J.PUR+28.43.5 pts · #16
- 2Fuentes Aledo, JeremyPUR+26.41.5 pts · #13
- 3Lajara Rodriguez, JeffryPUR+24.42.5 pts · #11
- 1Stuart, SeanPUR-33.62.0 pts · #26
- 2Quinones Gonzalez, Pedro FelipePUR-26.41.0 pts · #21
- 3Bennazar Nin, Antonio J.PUR-15.21.5 pts · #22
- R4+199 Elo gap
- R2+167 Elo gap
- R2+157 Elo gap