E04

Catalan Opening: Open Defense 4…dxc4 5. Nf3

Chess diagram: Catalan Opening: Open Defense after 5. Nf3

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Statistics from Lichess

548,389 games: White 51.7% / Draw 7.1% / Black 41.3%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
107,189107K
89,18589K
80,66381K
Catalan Opening: Open Defense 69,02269K
62,47962K
Classical Line 54,05254K
25,69126K
17,66618K

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 30, 2026

Engine evaluation

+0.15 The position is about equal

Best play: 5... c5 6. O-O Nc6 7. Ne5 Bd7 8. Nxc4 cxd4 9. Bf4 Bc8 10. Ne5

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

By rating

The stronger the players, the worse this line does for White: White scores 60% under 1400, 52% at 2200 and up and 54% in master games (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 27K
1400–1799 112K
1800–2199 255K
2200 and up 220K
Masters, over the board 14K

Master games

Rated blitz, rapid and classical Lichess games by rating band, and over-the-board games of players rated 2200+ from the Lichess masters database, updated Sep 27, 2026

Overview

Catalan Opening: Open Defense (ECO E04, Indian Defenses) is a variation of the Catalan Opening: Open Defense, reached after 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 (5 moves).

In 548,389 rated Lichess games between players rated 1600 to 2500, White won 51.7%, Black 41.3% and 7.1% were drawn. Black's most played move here is 5…c5, in 20% of those games.

It branches into 2 named variations; the most played are Catalan Opening: Open Defense, Classical Line and Catalan Opening: Open Defense, Modern Sharp Variation.

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How to answer 5. Nf3

5…a6 scores best for Black: 47.8%, with Black winning 44.0% and White 48.4% of 62K games. The most played, 5…c5, scores 46.4% in 107K games, and 5…Be7 scores lowest: 42.3%. Stockfish's first choice is 5…c5.

Main answers: those played in at least 5% of these games. Score: Black's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Popularity by year

This line is played more than twice as often as in 2016: 0.025% of Lichess games in 2025, up from 0.011%.

Numbers by year
YearShare of gamesGames
20160.011%3,842
20170.014%7,812
20180.018%13,820
20190.017%21,461
20200.017%50,679
20210.016%64,145
20220.022%84,294
20230.024%90,755
20240.024%86,672
20250.025%85,257
2026 (Jan–Apr)0.027%30,052

Share of rated Lichess games between players rated 1600 to 2500 (blitz, rapid and classical) that reach this position, by year; 2026: January to April. Which openings are rising and falling

Variations (2)

Transpositions

Cite this page

Caissa Codex. “Catalan Opening: Open Defense (E04)”. Lichess data as of 30 Oct 2026. https://chesscodex.org/openings/catalan-opening-open-defense-2