59th Biel Chess Festival 2026 Day 5: R Vaishali Survives a Scare against Kosteniuk

by Devansh Singh - 17/07/2026

It was a peaceful day at the 59th Biel Chess Festival as all the games in the Masters ended in a draw. Levon Aronian drew against Jose Martinez, Le Quang Liem drew against Yagiz Kaan Erdogmus, and Aydin Suleymanli drew against Matthias Bluebaum. In the Genreational Challenge, Marco Materia defeated Carissa Yip, and the other 2 games ended in a draw. Vaishali survived a scare against Kosteniuk and drew the game. The 4th classical game will start on 17th July at 2 PM Local Time. Photo: Biel Chess Festival

Masters Triathlon: Peace Prevails at the Top

In contrast to the grueling battles of the junior group, the Masters Triathlon experienced a quiet day with all three classical encounters ending in draws.

Jose Martinez vs. Levon Aronian (1.5-1.5)

Matthias Bluebaum vs. Aydin Suleymanli (1.5-1.5)

Yagiz Kaan Erdogmus vs. Le Quang Liem (1.5-1.5)

Standings

Replay Masters Game

Generations Challenge: Vaishali's Great Escape and Materia’s Marathon Win

The highlight of the day was undoubtedly the intense clash between Rameshbabu Vaishali and Alexandra Kosteniuk. The game caught fire on move 21 when Vaishali, who is set to challenge for the Women's World Championship title later this year, captured what seemed to be an unprotected pawn. However, it turned out to be a massive tactical miscalculation. Kosteniuk seized the initiative, winning back two pawns and placing Vaishali under immense pressure both on the board and on the clock. Under time pressure, both players made errors, and the game ended with threefold repetition.

R Vaishali during her game with Alexandra Kosteniuk

The only decisive game of the entire day across both triathlons came from 17-year-old French prodigy Marco Materia. Materia played a masterful endgame against four-time US Women's Champion Carissa Yip. Despite being a pawn down, Yip defended tenaciously for over five hours. However, a crucial slip-up in the late stages allowed Materia to seal the full point, closing his gap to tournament leader Vaclav Finek.

Carissa Yip vs. Marco Materia (0-4)

Xiao Tong vs. Finek Vaclav (1.5-1.5)

Standings

Replay Generations Challenge Games

Side Events Update: Drama in the Free Style Chess and Amateur Open

Away from the main triathlon stages, the side events at Biel witnessed high-stakes drama on Thursday. In the Free Style Chess (FSC) tournament, the leaderboard experienced a major shake-up as Grandmaster Alexander Cherniaev scored a crucial fourth-round victory over the overnight sole leader, Nicolas Perréard. With this decisive win, Cherniaev has taken exclusive possession of the top spot with 3.5/4 points, while Perréard sits just a half-point behind alongside IM David Gluckman and FM Levi Fogo Esquivel.

Meanwhile, in the Amateur Open Tournament (ATO), the competitive field is narrowing rapidly. Following a wave of tactical battles and hard-fought draws across the top boards, only 16 players out of the original 109-player field have managed to keep their slate completely clean, maintaining a perfect 3/3 score heading into the next round.

Photo Gallery: Here

Video Gallery: Here

Experience Day 5 of the 59th Biel International Chess Festival

Biel Classical Round 3 Recap

Live Stream

3rd Round of Classical at Biel Chess Festival 2026 live from Biel/Bienne, Switzerland

The Main Event: Masters Triathlon

The flagship Grandmasters Triathlon features a 6-player field balancing legendary experience with fearless youth.

Lineup

The Generations Challenge

The Challengers group also boasts a very interesting field - they will follow the same format as the Masters triathlon. The only Indian in the GMT this year is none other than the reigning FIDE Women's Candidates Winner and World Championship Challenger, R. Vaishali!

Lineup

Format

The Scoring System

Survival in the Triathlon requires mastering every speed. The points are weighted heavily to reward classical chess fightbacks:

Classical: Win = 4 points | Draw = 1½ points | Loss = 0 points
Rapid: Win = 2 points | Draw = 1 point | Loss = 0 points
Blitz: Win = 1 point | Draw = ½ point | Loss = 0 points

Schedule

Check out the schedule

Venue: Biel Congress Center (Kongresshaus)

Photo: Official Site

A Festival for the Masses

Biel isn't just for the world elite. It remains one of the premier chess holiday destinations because amateurs share the playing hall with Grandmasters.

Masters Open (MTO): A high-stakes, 10-round Swiss event for players rated 1900+ looking for international norms and title norms.
Amateur Open (ATO): A highly competitive 9-round Swiss for players under 2000 Elo, featuring a generous 5,000 CHF total prize fund.
One-Day Tournaments: For visitors looking for quick action, the schedule features the standalone Swiss Rapid Fischer Random (Chess960) Championship, a full-day Rapid Open, an intense Blitz Open, and a Chess Solving Competition.