CChessStats

XII Torneo de Ajedrez Narciso Rabell Mendez In Memoriam Clase B (U1800)

Open SwissStandard

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.

Location
🇵🇷San Sebastian, Puerto Rico
Dates
16 Jan 2026 → 18 Jan 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 5 rounds
Top seed
Avg top 10
1,733
Participants
27
Federations · 3 represented
🇵🇷Puerto Rico×23
🇨🇴Colombia×1
🇺🇸United States of America×1
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 3 players tied at 4.0/5, decided on Buchholz.

Co-leaders
10
3
4
1
3
1.52.545R1R2R3R4R5
R5 · TIEBREAK CLUSTER

3 players finish on 4.0/5. Llanos Martinez takes the title on Buchholz Cut1 (11.5).

WIN STREAKS · 2 top finishers

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

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Llanos Martinez, Alberto0PUR+20N=5B=8N+12B+11N4.011.513.09.7517700.0
2Sanchez Penagos, Rubiela1719COL+21N12B+14N+9B+8N4.010.512.09.501702-0.6
3Gerena Rivas, Ezequiel1789PUR=18N+23B+12N+11B=4B4.010.011.08.501885+12.2
4Matos Santoni, Gamalier1794PURF+9B+18N+5B=3N3.512.012.010.001954+12.2
5Deliz Lopez, Adan G.1784PUR+16B=1N+17B4N+18B3.511.012.57.001703-4.2
6Hernandez Betancourt, David J.1565PUR+26B+7N=11N8B+19N3.510.511.06.751750+28.4
7Ruiz Jimenez, Frankie E.1732PUR+14N6B+15N=19B+17B3.59.010.56.251644-12.0
8Baralt Campos, Jose G.1726PUR+25B=17N=1B+6N2B3.013.014.07.251643-4.4
9Zeno Miranda, Fernando0PUR+24B4N+13B2N+23B3.011.012.04.5016750.0
10Gonzalez Segarra, Abel1490PUR11N+21B22N+20B+15N3.07.59.05.001672+18.2
11Marrero Perez, Radames J.1792PUR+10B+13N=6B3N1B2.514.517.07.251718-13.2
12Lajara Rodriguez, Jeffry1562PUR+27B+2N3B1N=13B2.514.514.55.251717+24.4
13Luna Colon, Eliseo1643PUR+19N11B9N+16B=12N2.510.011.54.751608-2.8
14Lajara Mattei, Jeffrei1444PUR7B+27N2B=24N=22N2.010.010.01.251463+2.0
15Stuart, Sean1565PURF+26N7B+27N10B2.08.58.50.50812-33.6
16Perez Perez, Danay1470PUR5NF+26B13N+27B2.08.08.00.50914-8.2
17Tavhare Mashere, Suraj0PURF=8B5N+22B7N1.512.013.53.0016380.0
18Fuentes Aledo, Jeremy1470PUR=3B+24N4BF5N1.512.013.03.001633+26.4
19Perez Rosa, Wilfredo0PUR13BF+20N=7N6B1.511.513.03.2515710.0
20Bennazar Nin, Antonio J.1689PUR1B+25N19B10N=21B1.510.011.01.75691-15.2
21Colon Torres, Orlando0PUR2B10N=24B=26N=20N1.59.510.01.5014100.0
22Delgado Delgado, Edwin G.1659PURFF+10B17N=14B1.56.56.54.0016600.0
23Berrios Rivera, Mario1606PURF3N+25BF9N1.09.59.51.00989-10.4
24Quinones Gonzalez, Pedro Felipe1514PUR9N18B=21N=14B25N1.08.09.01.751264-26.4
25Castillo, Osiel0USA8N20B23NF+24B1.06.56.51.0014410.0
26FIDE 311980706N15B16N=21BF0.59.09.00.757280.0
27FIDE 3114481012N14BF15B16N0.08.58.50.007050.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers