CChessStats

IRT "Navidad ANBA" 2025

Open SwissStandard

11 players participated in this 7-round tournament, held from 26 Dec 2025 to 28 Dec 2025 in El Alto, Bolivia. 2 titled players. Top 10 Elo average was 1332, and top seed was Paulo Rozo (πŸ‡§πŸ‡΄ BOL, FM, 2139).

Maria Eugenia Ramirez (πŸ‡§πŸ‡΄ BOL, WFM, 1933) won with 6.5/7, ahead of Paulo Rozo (5.5) and John Osman Churata Huacani (5.0). Ramirez won solo starting round 4.

The biggest upset came in round 2: Briseyda Belen Quispe Mamani (1425) beat Nayra Chambi Alcazar (1534), a +109-point gap.

Location
πŸ‡§πŸ‡΄El Alto, Bolivia
Dates
26 Dec 2025 β†’ 28 Dec 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss Β· 7 rounds
Top seed
πŸ‡§πŸ‡΄FMPaulo Rozo2139
Avg top 10
1,332
Participants
11
Titled players Β· 2
FMΓ—1
WFMΓ—1
Federations Β· 1 represented
πŸ‡§πŸ‡΄BoliviaΓ—10
Top 3

How it unfolded

Top 6 Β· 7 rounds

WFM Maria Eugenia Ramirez led from R4; +1.0-point edge over the runner-up.

Co-leaders
5
3
2
1
1
1
1
23.55.57R1R2R3R4R5R6R7
Ramirez6.5Rozo5.5Churata Huacani5Quispe Mamani3Chavez Mollinedo3Rodriguez Quelca2.5
R4–R7 Β· LEAD HELD

WFM Maria Eugenia Ramirez never relinquished the lead after R4; final gap +1.0 over the runner-up.

R3 Β· HEAD-TO-HEAD Β· WINNER VS 2ND

WFM Maria Eugenia Ramirez drew with FM Paulo Rozo (Black).

WIN STREAKS Β· 3 top finishers

WFM Maria Eugenia Ramirez 4 wins (R4–R7)FM Paulo Rozo 3 wins (R5–R7)John Osman Churata Huacani 3 wins (R5–R7)

Key matchups Β· top 4

Head-to-head between the four finishers
Player1234
1WFMMaria Eugenia Ramirez*
Β½
1
1
2FMPaulo Rozo
Β½
*
1
1
3John Osman Churata Huacani
0
0
*β€”
4Briseyda Belen Quispe Mamani
0
0
β€”*

Grille amΓ©ricaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΞ”
1Ramirez, Maria EugeniaWFM1933BOL+8N+9B=2N+3B+4N+5B+10N6.519.019.016.252025+12.0
2Rozo, PauloFM2139BOL+3B+4N=1BF+5N+8B+6N5.522.023.518.252144+1.2
3Churata Huacani, John Osman1525BOLβˆ’2N+8B+10Bβˆ’1N+9N+6B+4N5.020.020.08.001709+30.0
4Chavez Mollinedo, Christopher1557BOL+10Nβˆ’2BF+11Nβˆ’1B+9Nβˆ’3B3.020.020.01.001545-10.4
5Quispe Mamani, Briseyda Belen1425BOLβˆ’7N+11B+9N+6Bβˆ’2Bβˆ’1NF3.017.517.53.501549+15.6
6Rodriguez Quelca, Sebastian0BOL+11Nβˆ’7B=8Nβˆ’5N+10Bβˆ’3Nβˆ’2B2.517.017.00.7514460.0
7Veizaga Mamani, Kirsten Ivana1780BOL+5B+6NFFFFF2.014.014.05.502225+4.0
8Quispe Mamani, Mikeyla Paola1426BOLβˆ’1Bβˆ’3N=6BFFβˆ’2N+9B1.520.520.52.25926-20.8
9Sossa Ojeda, Benjamin Tadeo0BOLFβˆ’1Nβˆ’5B+10Nβˆ’3Bβˆ’4Bβˆ’8N1.019.019.00.007740.0
10FIDE 33417200β€”βˆ’4BFβˆ’3Nβˆ’9Bβˆ’6NFβˆ’1B0.018.018.00.008720.0
11Chambi Alcazar, Nayra1534BOLβˆ’6Bβˆ’5NFβˆ’4BFFF0.010.010.00.00692-22.4

Key insights

Biggest movers and upsets β€” the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
IRT "Navidad ANBA" 2025 β€” El Alto, Bolivia | Chess Tournament Results | ChessStats