CChessStats

IRT - Open ANBA ART Bolivia 2026

Open SwissStandard

22 players participated in this 7-round tournament, held from 23 Jan 2026 to 25 Jan 2026 in El Alto, Bolivia. 3 titled players. Top 10 Elo average was 1799, and top seed was Paulo Rozo (🇧🇴 BOL, FM, 2126).

Jefferson Alanoca Torrez (🇧🇴 BOL, 1652) won with 5.5/7, ahead of Mario Medrano (5.5) and Maria Eugenia Ramirez (5.5). Alanoca Torrez took the lead from round 6, winning on tie-break.

The biggest upset came in round 4: Anahi Mamani (WFM, 1869) beat Paulo Rozo (FM, 2126), a +257-point gap.

Location
🇧🇴El Alto, Bolivia
Dates
23 Jan 2026 → 25 Jan 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇧🇴FMPaulo Rozo2126
Avg top 10
1,799
Participants
22
Titled players · 3
FM×1
WFM×2
Federations · 1 represented
🇧🇴Bolivia×17
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R5; 3 players tied at 5.5/7, decided on Buchholz.

Co-leaders
10
5
2
1
1
1
3
23.55.57R1R2R3R4R5R6R7Medrano takes leadAlanoca Torrez takes lead
Medrano5.5Alanoca Torrez5.5Ramirez5.5Mamani5Rozo4.5Yujra Condori4
R5 · LEADER CHANGE24 Jan

Mario Medrano takes the sole lead (4.5/5).

R7 · TIEBREAK CLUSTER

3 players finish on 5.5/7. Alanoca Torrez takes the title on Buchholz Cut1 (28.5).

R2 · HEAD-TO-HEAD · WINNER VS 2ND

Mario Medrano drew with Jefferson Alanoca Torrez (White).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Mario Medrano*
½
0
1
2Jefferson Alanoca Torrez
½
*
½
1
3WFMMaria Eugenia Ramirez
1
½
*—
4WFMAnahi Mamani
0
0
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Alanoca Torrez, Jefferson1652BOL+10B=2N+11B=3N+7B+4N=5B5.528.532.024.252074+61.4
2Medrano, Mario2010BOL+14N=1B+12N+8B+4B−3N+6B5.527.030.021.751956-4.2
3Ramirez, Maria EugeniaWFM1952BOL+20B+7NF=1B+5N+2B+13N5.523.023.020.252195+22.0
4Mamani, AnahiWFM1869BOL+22N+12B+8N+5B−2N−1B+9N5.026.526.515.501916+8.8
5Rozo, PauloFM2126BOL+9B+11N+6B−4N−3B+7N=1N4.528.031.518.251884-32.6
6Yujra Condori, Miguel Angel1599BOL+15N+14B−5N+16B=9N=8B−2N4.023.525.511.501683+12.0
7Murga Paz, Diego Emanuel1646BOL+16N−3B+19N+15B−1N−5B+12N4.023.024.08.501621-10.8
8Veizaga Mamani, Kirsten Ivana1777BOL+17B+21N−4B−2N+14B=6N=11B4.023.023.59.251657-29.6
9Vargas Huanca, Josue1583BOL−5N+13B=15N+19B=6B+11N−4B4.022.523.510.751714+20.8
10Quelca Torrejon, Aaron Alfredo0BOL−1N+22B−13N−12B+18N+16B+17N4.017.517.56.008280.0
11Mayta Aiza, Vicmar1752BOL+13N−5B−1N+18B+16N−9B=8N3.523.025.09.001462-28.8
12Churata Huacani, John Osman1602BOL+19B−4N−2B+10N−13B+14N−7B3.024.525.58.001541-8.8
13Colque Lugones, Wilhem Eithan0BOL−11B−9N+10B+22N+12NF−3B3.022.522.57.0015290.0
14Yujra Condori, Luz Mariela1416BOL−2B−6N+20B+21N−8N−12B+19N3.018.018.52.00899-28.0
15Salguero Mamani, Josept Samuel0BOL−6B+17N=9B−7N+22BFF2.517.017.04.0013360.0
16Rodriguez Calle, Matias Aron0BOL−7B+20N+21B−6N−11B−10NF2.016.516.51.008660.0
17FIDE 33733550—−8N−15BFF+19N+20N−10B2.012.012.01.509760.0
18FIDE 239378740—FFF−11N−10B+21N+20B2.08.58.51.009520.0
19FIDE 33638480—−12NF−7B−9N−17B+22N−14B1.016.016.00.007620.0
20FIDE 33738860—−3N−16B−14NF=21B−17B−18N0.515.015.00.258840.0
21Sossa Ojeda, Benjamin Tadeo0BOLF−8B−16N−14B=20N−18BF0.511.511.50.257960.0
22FIDE 33738940—−4B−10NF−13B−15N−19BF0.016.016.00.0010690.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets