CChessStats

Campeonato de Ajedrez Clasico CDMX Sub 13

Open SwissStandard

12 players participated in this 7-round tournament, held from 21 Aug 2025 to 24 Aug 2025 in CDM, Gustavo A. Madero, Mexico. Top 10 Elo average was 954, and top seed was Nayla Belem Rosales Flores (🇲🇽 MEX, 1701).

Marco Cristofer Olivo Diaz (🇲🇽 MEX, 1658) won with 5.0/7, ahead of Zirel Montoya Perez (5.0) and Daniyyel Montoya Perez (5.0). Olivo Diaz shared the lead from round 1, winning on tie-break.

The biggest upset came in round 1: Daniyyel Montoya Perez (1457) beat Nayla Belem Rosales Flores (1701), a +244-point gap.

Location
🇲🇽CDM, Gustavo A. Madero, Mexico
Dates
21 Aug 2025 → 24 Aug 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇲🇽Nayla Belem Rosales Flores1701
Avg top 10
954
Participants
12
Federations · 1 represented
🇲🇽Mexico×9
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R3; 3 players tied at 5.0/7, decided on Buchholz.

Co-leaders
5
2
1
1
1
2
3
23.55.57R1R2R3R4R5R6R7
Olivo Diaz5Montoya Perez5Montoya Perez5Rosales Flores4Sanchez Gomez3.5Lopez Olascoaga3.5
R3–R7 · LEAD HELD

Marco Cristofer Olivo Diaz held the sole lead from R3 through R7 without losing it.

R7 · TIEBREAK CLUSTER

3 players finish on 5.0/7. Olivo Diaz takes the title on Buchholz Cut1 (24.5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Marco Cristofer Olivo Diaz beat Zirel Montoya Perez (White).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Marco Cristofer Olivo Diaz*
1
1
1
2Zirel Montoya Perez
0
*
1
1
3Daniyyel Montoya Perez
0
0
*
1
4Nayla Belem Rosales Flores
0
0
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Olivo Diaz, Marco Cristofer1658MEX+12N+3B+4N+2B=5BF=6N5.024.525.518.501816+38.4
2Montoya Perez, Zirel1571MEX+9B+7N=5B−1N+3N+4B=8N5.023.525.517.251678+22.4
3Montoya Perez, Daniyyel1457MEX+4B−1N+9B+7N−2B+5N+11B5.022.524.514.501612+32.0
4Rosales Flores, Nayla Belem1701MEX−3N+12B−1B+10N+8B−2N+9N4.022.023.08.00762-81.2
5Sanchez Gomez, Santiago1518MEX+11BF=2N=6B=1N−3B+10N3.522.522.510.751493-6.4
6Lopez Olascoaga, Diego1632MEXF=8B+11N=5N+7BF=1B3.521.521.510.751588-5.2
7Perez Hernandez, Edgar Alejandro0MEX+10N−2B+8N−3B−6N+9B−12N3.020.521.57.007540.0
8Gonzalez Ramirez, Leonel0MEXF=6N−7B+12B−4N+10N=2B3.018.518.57.2515100.0
9Castro Rivera, Luis Fernando0MEX−2N+10B−3N−11B+12N−7N−4B2.021.022.03.007760.0
10FIDE 5500101310—−7B−9N+12N−4B+11N−8B−5B2.017.518.53.008090.0
11FIDE 5500101230—−5NF−6B+9N−10B+12B−3N2.017.017.03.007360.0
12FIDE 296332300—−1B−4N−10B−8N−9B−11N+7B1.019.021.03.008790.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets