CChessStats

Campeonato Nacional Amateur Sub 2300 Absoluto 2025

Open SwissStandard

18 players participated in this 7-round tournament, held from 23 May 2025 to 25 May 2025 in Asuncion, Paraguay. 5 titled players. Top 10 Elo average was 1989, and top seed was Oscar Ferreira Isasi (🇵🇾 PAR, FM, 2220).

Enrique Allo Collante (🇵🇾 PAR, 2084) won with 5.0/7, ahead of Jose Antonio Alarcon (4.5) and Raul Ivan Benitez (4.5). Allo Collante took the lead from round 6.

The biggest upset came in round 7: Osmar Gomez (1759) beat Oscar Ferreira Isasi (FM, 2220), a +461-point gap.

Location
🇵🇾Asuncion, Paraguay
Dates
23 May 2025 → 25 May 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇵🇾FMOscar Ferreira Isasi2220
Avg top 10
1,989
Participants
18
Titled players · 5
FM×2
CM×3
Federations · 1 represented
🇵🇾Paraguay×18
Top 3

How it unfolded

Top 6 · 7 rounds

Enrique Allo Collante led from R6; +0.5-point edge over the runner-up.

Co-leaders
6
1
2
1
1
1
1
23.55.57R1R2R3R4R5R6R7Alarcon takes leadAmarilla Ettiene takes leadAllo Collante takes lead
Allo Collante5Benitez4.5Alarcon4.5Gomez4.5Montiel4.5Amarilla Ettiene4
R4 · LEADER CHANGE24 May

Jose Antonio Alarcon takes the sole lead (3.5/4).

R4–R6 · WIN STREAK

Enrique Allo Collante won 3 in a row (R4–R6).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Enrique Allo Collante*—
½
—
2Raul Ivan Benitez—*
0
½
3Jose Antonio Alarcon
½
1
*—
4Osmar Gomez—
½
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Allo Collante, Enrique2084PARF+4B=13N+14N+11B+6B=2N5.020.520.517.002239+22.8
2Alarcon, Jose Antonio2037PAR+7N=13B+3N+11B−6N=4B=1B4.524.527.017.002073+9.0
3Benitez, Raul Ivan1950PAR=17B+10N−2B+9N=8B=5N+11B4.522.524.014.751995+10.2
4Montiel, Angel NathanaelCM2011PARF−1N+17B+15B+13N=2N+6B4.519.519.512.252112+17.4
5Gomez, Osmar1759PAR+18BF+7N−6B+15N=3B+8N4.518.518.512.252053+43.2
6Amarilla Ettiene, EzequielCM2017PAR+14B=8N=9B+5N+2B−1N−4N4.025.527.514.501990-4.8
7Acevedo Barreto, Ezequiel1704PAR−2B+18N−5B+10N=9B=8N=12N3.522.523.59.501811+32.8
8Ferreira Isasi, OscarFM2220PAR+15N=6B=11N=13B=3N=7B−5B3.522.024.010.751923-47.4
9Vera Gajardo, Jorge Luis1774PAR+16N−11B=6N−3B=7N+14B=13N3.519.521.59.001869+15.8
10Aquino Sanchez, Rodrigo Catriel1721PAR−11N−3B+16N−7B+18N=12B+14N3.518.019.06.501769+7.0
11Vinales Gonzalez, Enzo MathiasFM2064PAR+10B+9N=8B−2N−1N=13B−3N3.024.527.010.001915-47.2
12Cardozo Acosta, Axel Maximiliano1686PARF−15B=18N=16B+17N=10N=7B3.015.016.06.5016860.0
13Roman, RodrigoCM1969PARF=2N=1B=8N−4B=11N=9B2.524.027.09.7519750.0
14Cardozo Perez, Arturo H.1698PAR−6N+16B+15N−1BF−9N−10B2.020.020.04.001710-1.4
15Ayala Sanabria, Erick Benjamin1732PAR−8B+12N−14B−4N−5B+18B−16N2.019.520.54.001637-42.0
16Dominguez Maidana, Juan Alberto1679PAR−9B−14N−10B=12NF=17B+15B2.015.515.54.251590-14.4
17Avalos, Rosana1679PAR=3NF−4N=18B−12B=16NF1.515.015.03.751636-7.8
18Moreno Silva, Valentina Gizeth1594PAR−5N−7B=12B=17N−10B−15NF1.018.018.02.251441-42.4

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets