CChessStats

Noches Clasicas con el San Juan Chess Club - Jueves

Open SwissStandard

15 players participated in this 5-round tournament, held from 12 Feb 2026 to 12 Mar 2026 in San Juan, Puerto Rico. 3 titled players. Top 10 Elo average was 1795, and top seed was Miguel A. Boggiano Pereira (🇵🇷 PUR, CM, 2060).

Miguel A. Boggiano Pereira (🇵🇷 PUR, CM, 2060) won with 3.5/5, ahead of Christian Z. Rivera Valentin (3.5) and Louis E. Carrion Perez (3.5). Boggiano Pereira shared the lead from round 1, winning on tie-break.

The biggest upset came in round 1: Oscar A. Serrano Rivera (1570) beat Alberto Llanos Martinez (1917), a +347-point gap.

Location
🇵🇷San Juan, Puerto Rico
Dates
12 Feb 2026 → 12 Mar 2026
Time control
Standard: All Moves in 60 Min. Incr. 15 Sec. / /
System
Swiss · 5 rounds
Top seed
Avg top 10
1,795
Participants
15
Titled players · 3
CM×2
WCM×1
Federations · 1 represented
🇵🇷Puerto Rico×13
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R3; 3 players tied at 3.5/5, decided on Buchholz.

Co-leaders
4
2
1
1
3
1.52.545R1R2R3R4R5
R3–R5 · LEAD HELD

CM Miguel A. Boggiano Pereira held the sole lead from R3 through R5 without losing it.

R5 · TIEBREAK CLUSTER

3 players finish on 3.5/5. Boggiano Pereira takes the title on Buchholz Cut1 (11.0).

R1–R3 · WIN STREAK

CM Miguel A. Boggiano Pereira won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Boggiano Pereira, Miguel A.CM2060PUR+5B+2N+7B=6NF3.511.011.09.752099+3.2
2Rivera Valentin, Christian Z.1715PUR+12N1B=5N+9B+8N3.59.59.54.751814+8.8
3Carrion Perez, Louis E.1934PURF+13B=4N+8B+5N3.57.57.56.002011+7.0
4Pinales Roussel, GabrielCM1936PURF+14N=3B=7N+6B3.08.58.55.501980+6.4
5Rodriguez Rodriguez, Ian G.1660PUR1N+12B=2B+10N3B2.511.511.52.751630-3.4
6Llanos Martinez, Alberto1917PUR8N+10B+9N=1B4N2.510.011.04.251702-42.0
7Deliz Orengo, Arturo1759PUR+10B+8N1N=4BF2.59.59.54.501855+6.6
8Serrano Rivera, Oscar A.1570PUR+6B7B+11N3N2B2.012.012.53.001755+20.6
9Vera Perez, Gabriela S.WCM1588PURF+15N6B2N=11B1.56.56.50.251541-6.8
10FIDE 311041907N6N+15B5BF1.07.57.50.009790.0
11Cruz Negron, Arcadio1810PURFF8BF=9N0.53.53.50.751386-43.2
12Valentin Baez, Bryan Jay0PUR2B5NFFF0.06.06.00.008880.0
13Rivera Maldonado, Jose J.1518PURF3NFFF0.03.53.50.001118-3.2
14Stuart, Sean1511PURF4BFFF0.03.03.00.001113-3.2
15FIDE 31195210F9B10NFF0.03.03.00.007880.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets