CChessStats

4to IRT Abierto Clasico del Rio Magdalena-Absoluto

Open SwissStandard

21 players participated in this 7-round tournament, held from 25 Sept 2025 to 28 Sept 2025 in Puerto Boyaca - BOY, Colombia. 12 titled players from 3 federations. Top 10 Elo average was 2109, and top seed was Ronald Jesus Brizuela Abreu (🇻🇪 VEN, IM, 2292).

Carlos Ramirez (🇨🇴 COL, IM, 2135) won with 5.5/7, ahead of Carlos A. Juarez Flores (5.0) and Ronald Jesus Brizuela Abreu (4.5). Ramirez won solo starting round 5.

The biggest upset came in round 5: Carolina Mazariegos Kummerfeldt (WIM, 1871) beat David Emanuel Giron Chavez (FM, 2123), a +252-point gap.

Location
🇨🇴Puerto Boyaca - BOY, Colombia
Dates
25 Sept 2025 → 28 Sept 2025
Time control
Standard: 90 minutes for game with 30 seconds delay from move 1
System
Swiss · 7 rounds
Top seed
🇻🇪IMRonald Jesus Brizuela Abreu2292
Avg top 10
2,109
Participants
21
Titled players · 12
IM×4
FM×3
CM×2
WIM×1
WFM×1
WCM×1
Federations · 3 represented
🇬🇹Guatemala×10
🇨🇴Colombia×8
🇻🇪Venezuela×1
Top 3

How it unfolded

Top 6 · 7 rounds

IM Carlos Ramirez led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders
5
3
4
2
1
1
1
23.55.57R1R2R3R4R5R6R7
Ramirez5.5Juarez Flores5Brizuela Abreu4.5Mazariegos Kummerfeldt4.5Giron Chavez4.5Linares Orellana4
R5–R7 · LEAD HELD

IM Carlos Ramirez held the sole lead from R5 through R7 without losing it.

R5 · HEAD-TO-HEAD · WINNER VS 2ND

IM Carlos Ramirez beat IM Carlos A. Juarez Flores (White).

R1–R7 · UNBEATEN

IM Carlos Ramirez went unbeaten across 7 games (R1–R7).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1IMCarlos Ramirez*
1
½
½
2IMCarlos A. Juarez Flores
0
*—
½
3IMRonald Jesus Brizuela Abreu
½
—*
½
4WIMCarolina Mazariegos Kummerfeldt
½
½
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Ramirez, CarlosIM2135COL+9N+11B=7N+5B+2B=4N=3B5.525.528.522.252304+15.0
2Juarez Flores, Carlos A.IM2292GUA+13N=8B+17N+7B−1N+12B=4N5.023.025.015.502168-7.6
3Brizuela Abreu, Ronald JesusIM2292VEN=4B+6N=5N=11B=7N+8B=1N4.525.528.518.002168-9.2
4Mazariegos Kummerfeldt, CarolinaWIM1871GUA=3N+15B=8N=17B+5N=1B=2B4.525.527.517.252156+48.0
5Giron Chavez, David EmanuelFM2123GUA+14B+21N=3B−1N−4B+16N+10B4.523.523.511.252026-11.6
6Linares Orellana, Hector JoseFM2118GUA=17N−3B=15N+18B+11N=7B=12N4.018.520.510.501989-34.4
7Zuluaga Mancilla, CesarIM2136COL+10B+12N=1B−2N=3B=6N−8N3.526.029.013.502114-1.6
8Galvez Dastin, EduardoFM2090GUAF=2N=4B+13N=12B−3N+7B3.523.523.512.752138+8.6
9Hidalgo Avila, Yervyn1828GUA−1B+20N−12B+14N=16N=11B=13N3.520.022.09.251888+15.2
10Raymundo, Deycy DanielaWFM1842GUA−7N−17B+19N+21B+15N=13B−5N3.517.517.56.001772-22.0
11Hidalgo Avila, YefryCM1971GUA+20B−1N+14B=3N−6B=9N−16B3.023.025.09.001883-30.4
12Aponte Castillo, Jose Ernesto2030COLF−7B+9N+16B=8N−2N=6B3.022.024.09.752061+4.6
13Juarez Garcia, Daniela1861GUA−2BF+18N−8B+17N=10N=9B3.019.519.57.501871-1.8
14Santiago Sontay, Jenny FernandaWCM1771GUA−5N+19B−11N−9BF+18B+15N3.017.517.56.501735-5.0
15Velez, Luis Fernando1789COLF−4N=6B+20N−10B+19N−14B2.519.019.06.001579-19.0
16Palacio, Pablo PersiCM1901COLFF+21B−12N=9B−5B+11N2.514.014.04.751901-1.0
17Montenegro, Jorge1695COL=6B+10N−2B=4N−13BFF2.020.020.07.751881+39.6
18FIDE 1444703800—FF−13B−6N+20B−14N+19B2.014.014.04.0011170.0
19FIDE 1444703390—F−14N−10B+?B+21N−15B−18N2.014.014.00.0010010.0
20Rico Diaz, Ettlingert Blas0COL−11N−9B+?N−15B−18N+21BF2.011.011.00.0010630.0
21Urrutia Mosquera, Anny Jefferson0COLF−5B−16N−10N−19B−20NF0.014.514.50.0011550.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets