Tech Mahindra Global Chess League · Preliminary Stage

Sindarov beats Vachier-Lagrave: can you find the move the engine wanted?

September 12, 2026 · Vachier-Lagrave 0–1 Sindarov

After 29.Kf1 · Stockfish −1.80 → −3.18

GM Javokhir Sindarov (Fyers American Gambits) beat GM Maxime Vachier-Lagrave (CheQ Mumba Masters) in the Tech Mahindra Global Chess League 2026 (Preliminary Stage), in 36 moves.

The game turned on 29.Kf1. Before it, Stockfish had the position as a clear advantage for Black (-1.80); one move later, winning for Black (-3.18). It was played with 2:19 left on the clock.

Stockfish wanted 29.Qa5 instead. Can you see why? And 29...Qd2, the engine's best reply, came straight back.

It began as the Catalan Opening: Open Defense, Classical Line.

Replay it move by move, then take the key position on against the engine.

White
GM Maxime Vachier-Lagrave, 2706 · CheQ Mumba Masters
Black
GM Javokhir Sindarov, 2732 · Fyers American Gambits
Result
0–1 in 36 moves
Opening
Catalan Opening: Open Defense, Classical Line · E05
Event
Tech Mahindra Global Chess League 2026, Preliminary Stage · Bengaluru, India
Key move: {0}
29.Kf1
Engine’s choice
29.Qa5

In Brass Pawn

Stop at the move. Play it differently.

Replay the game on a flat board or in 3D, wind back to the moment it turned, and take the position over against the engine — free, with no account.

On an iPhone or iPad this page opens the game itself — in the app if you have it, and if not, in a preview that keeps it waiting for when you do.

The game

1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.0–1

Moves from the official broadcast — the game on Lichess. Evaluations by Stockfish 18. Brass Pawn is not affiliated with the event or the players.

Brass Pawn

Tactics, positional judgement, endgame technique and coached play, with the engine running on the device itself. No account, and nothing collected — apart from what online play needs: that you are online, and the friends you make.

Chess practice: offline analysis, puzzles and friends

Free software under the GNU Affero General Public License v3. Read the source.

© 2026 Mincho Milev. Brass Pawn is free software.

Stockfish © the Stockfish developers, GPLv3. Puzzles and games from the Lichess database, CC0. Not affiliated with Apple, Lichess, the Stockfish project or the Reckless project.