CChessStats

Torneo Clasificatorio de Cuarta Division, Montes de Oca 2025

Open SwissStandard

35 players participated in this 7-round tournament, held from 21 Jun 2025 to 22 Jun 2025 in Montes de Oca, Costa Rica. 1 titled players. Top 10 Elo average was 1517, and top seed was Mauricio Echeverria Rodriguez (🇨🇷 CRC, 1892).

Moises Alonso Romero Cerdas (🇨🇷 CRC, 1445) won with 6.0/7, ahead of Gabriel Rivera Mora (5.5) and Jason Young Zhou (5.5). Romero Cerdas won solo starting round 6.

The biggest upset came in round 3: Jason Young Zhou (1467) beat Mauricio Echeverria Rodriguez (1892), a +425-point gap.

Location
🇨🇷Montes de Oca, Costa Rica
Dates
21 Jun 2025 → 22 Jun 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 7 rounds
Avg top 10
1,517
Participants
35
Titled players · 1
WCM×1
Federations · 1 represented
🇨🇷Costa Rica×26
Top 3

How it unfolded

Top 6 · 7 rounds

Moises Alonso Romero Cerdas led from R6; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R6.

Co-leaders
17
7
3
2
2
1
1
23.55.57R1R2R3R4R5R6R7
R6–R7 · LEAD HELD

Moises Alonso Romero Cerdas held the sole lead from R6 through R7 without losing it.

R7 · HEAD-TO-HEAD · WINNER VS 2ND

Moises Alonso Romero Cerdas drew with Gabriel Rivera Mora (Black).

WIN STREAKS · 3 top finishers

Moises Alonso Romero Cerdas 4 wins (R1–R4)Gabriel Rivera Mora 3 wins (R4–R6)Jason Young Zhou 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Romero Cerdas, Moises Alonso1445CRC+27N+26B+4N+19B=3N+9B=2N6.025.027.021.501716+68.4
2Rivera Mora, Gabriel1431CRC+31N=8B=15N+11B+6N+3B=1B5.528.029.022.001633+24.0
3Young Zhou, Jason1467CRC+22B+13N+?B+28N=1B2N+4B5.523.523.515.001642+41.6
4Mora Acuna, Johnny Gabriel1468CRC+17N+11B1B+20N+?B+6N3N5.026.026.014.501355-18.8
5Soto Rivera, Matias1539CRC14B21N+18B+32N+22B+8B+9N5.019.520.514.502282+34.4
6Manzanares Pinto, Guillermo1507CRC+21B=28N+14B+10N2B4B+16N4.524.025.514.251421-13.6
7Gutierrez Rodriguez, Ignacio1445CRC9N+18B12N+17B=14N+15B+11N4.522.025.015.251466+2.4
8Dodaro Gamez, Alessandro1500CRC+34B=2N28B+22N+15B5N+13B4.521.021.011.751654+32.4
9Gonzalez Barboza, Josue David0CRC+7B?N+13B+23N+28B1N5B4.022.522.511.5015000.0
10Charpentier Badilla, Ian Sebastian1624CRC12N+17B+29N6B16N+30B+14N4.020.021.09.001394-37.2
11Chaves Rivera, Dominic Gael0CRC+35B4N+32B2N+25B+?N7B4.018.018.03.006870.0
12Zhou Fernandez, Isabella1429CRC+10B23N+7B?N13B+33N+21B4.017.517.512.001511+5.2
13Perez Rojas, Nicolas1576CRC+25N3B9N+35B+12N=16B8N3.523.523.57.751377-32.0
14Alfaro Letendre, Benjamin0CRC+5N+24B6N26B=7B+21N10B3.522.524.511.7513530.0
15Fernandez Mayorga, ElenaWCM0CRCF+33N=2B+24B8N7N+28B3.519.019.07.251234-30.0
16Garcia Gaspar, Alberto0CRCF+?B+35NF+10B=13N6B3.513.513.55.7515680.0
17FIDE 656960904B10N+34B7NF+31B+30N3.015.515.52.007130.0
18Becerra Sandoval, Marcelo0CRC23B7N5N+30B+34N24B+?B3.014.514.51.006600.0
19Azofeifa Retana, Cesar Augusto1473CRC+29B+20N+23B1NFFF3.012.512.56.501595+19.6
20Sandoval Loaiciga, Aldric0CRC+30N19B+31N4BF+22N?B3.012.012.04.0013330.0
21Cambronero Vargas, Dana Valeria0CRC6N+5B26N=29B+31N14B12N2.520.521.56.7513500.0
22Montero Chavez, Miguel Angel1429CRC3N+25B+24N8B5N20BF2.022.022.04.00719-45.6
23Pozo Miranda, Camila0CRC+18N+12B19N9BFFF2.014.014.07.001479+8.8
24Herrera Cordoba, Cala0CRC+33B14N22B15NF+18N?B2.014.014.04.006380.0
25FIDE 6575579013B22NF+31B11N27B+33N2.013.513.52.007020.0
26Chavarria Masis, Astrid1406CRCF1N+21B+14NFFF2.012.012.06.006450.0
27FIDE 657020801B32N+?BFF+25NF2.010.010.02.006450.0
28Vaughan Jimenez, Natalie0CRCF=6B+8N3B9N?B15N1.525.525.56.7514070.0
29Badilla Flores, Luciano1566CRC19N+30B10B=21NFFF1.510.510.52.25748-42.0
30FIDE 6573550020B29N+33B18NF10N17B1.016.517.51.007950.0
31FIDE 657324002B+34N20B25N21B17NF1.016.016.00.007430.0
32FIDE 65636860?N+27B11N5BFFF1.013.013.02.007340.0
33FIDE 6572065024N15B30N+?NF12B25B1.012.512.50.006660.0
34FIDE 657024008N31B17NF18B?NF0.011.511.50.007340.0
35FIDE 6575587011NF16B13NFFF0.011.011.00.007740.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers