Prepare against Cosima Mueller

DEU · World #96,600 classical · FIDE ID 34601490

When preparing against Cosima Mueller, expect 1.e4 in 100% of White games. Against 1.e4 the reply is 1...c5 (98% of games); against 1.d4, 1...Nf6 (68%). Lowest win rate among frequent openings: Sicilian as Black, 52.9% over 17 games.

Our database contains 127 games by Cosima Mueller, covering Apr 2020 to Jul 2026. Below you'll find Cosima Mueller's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Cosima Mueller before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.

Ratings

Performance record

Move-by-move preparation stats

Straight from the preparation tree built over all of Cosima Mueller's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Cosima Mueller's side.

First moves as White (62 games)

Main lines as White

• 1.e4 — 100% of White games, 45.2% score
  • …e5 (37% of these games) — Mueller usually continues Nf3 (43.5% score)
  • …c5 (29% of these games) — Mueller usually continues Nf3 (41.7% score)
  • …c6 (13% of these games) — Mueller usually continues d4 (50.0% score)

As Black against 1.e4 (42 games)

As Black against 1.d4 (19 games)

Cosima Mueller's chess games

All 127 games by Cosima Mueller in the Chess.ceo database (Apr 2020 - Jul 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 50 wins, 17 draws, 60 losses.

Openings as White

Openings as Black

Notable wins

Top events

Frequently asked questions

Where can I find Cosima Mueller's chess games?

127 games by Cosima Mueller, from Apr 2020 to Jul 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Cosima Mueller has played.

What does Cosima Mueller play on the first move as White?

Across 62 games with White in our database, Cosima Mueller opens with 1.e4 (100% of games). Against 1.e4 as Black, Cosima Mueller answers 1...c5 (98% of games), 1...e6 (2% of games). Against 1.d4: 1...Nf6 (68% of games), 1...d5 (32% of games).

What openings does Cosima Mueller play as White?

As White, Cosima Mueller's most-played openings in our database are: Sicilian (10 games, 30.0% win rate); Caro-Kann: Exchange Variation (7 games, 57.1% win rate); Italian Game: Two Knights Defense (6 games, 50.0% win rate). The full breakdown of 62 games with White is in the table above.

What openings does Cosima Mueller play as Black?

As Black, Cosima Mueller most often plays: Sicilian (17 games, 52.9% win rate); Sicilian: Accelerated Dragon (9 games, 11.1% win rate); Indian Defense (5 games, 20.0% win rate). See the table above for the top ten Black openings across 65 games.

What is Cosima Mueller's FIDE rating?

Cosima Mueller is currently rated 1,740 in classical chess. Peak classical rating: 1,807 (Oct 2024).

How many games has Cosima Mueller played?

Our database contains 127 games by Cosima Mueller, covering Apr 2020 to Jul 2026. Overall record: 50 wins, 17 draws, 60 losses (39.4% win rate).

How do I prepare against Cosima Mueller?

127 games by Cosima Mueller reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.

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