B21

Sicilian Defense: McDonnell Attack

The McDonnell Attack (1.e4 c5 2.f4) is the immediate form of the Grand Prix Attack against the Sicilian Defense. Read the guide

Chess diagram: Sicilian Defense: McDonnell Attack after 2. f4

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Statistics from Lichess

19,955,347 games: White 47.3% / Draw 3.9% / Black 48.8%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
7,906,9187.9M
4,100,3174.1M
3,379,0613.4M
2,595,6722.6M
935,724936K
345,929346K
291,213291K
140,688141K

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 6, 2026

Engine evaluation

0.00 The position is about equal

Best play: 2... e6 3. Nc3 Nc6 4. Nf3 Nh6 5. d4 d5 6. Bb5 dxe4 7. Ne5

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

By rating

Rating changes little here: White scores 50% under 1400, 49% at 2200 and up and 47% in master games (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 2.2M
1400–1799 11.6M
1800–2199 11.7M
2200 and up 555K
Masters, over the board 2,692

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 26, 2026

Description

The McDonnell Attack (1.e4 c5 2.f4) is the immediate form of the Grand Prix Attack against the Sicilian Defense. White plays f4 at once, without first developing the queen's knight with 2.Nc3.

Origins

The name comes from the 14th game of the 1834 match in London between Alexander McDonnell and Louis-Charles Mahé de La Bourdonnais, in which McDonnell played 2.f4; La Bourdonnais answered 2...e6 and won.

The idea

In the modern Grand Prix main line, 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7, White plays Bb5, threatening to double Black's pawns with Bxc6, or Bc4, aiming for a kingside attack. The drawback of playing f4 at once is that Black can strike in the centre immediately with ...d5.

Main lines

  • 2...d5 3.exd5 Nf6!, the Tal Gambit. According to Jeremy Silman and others this is Black's best reply, and it has caused the immediate 2.f4 to decline in popularity.
  • 2...d5 3.Nc3, declining the gambit, the so-called Toilet Variation, named after its reputed place of invention.
  • 2...e6, as La Bourdonnais played, a less common option.
  • For these reasons players nowadays usually reach the Grand Prix by playing 2.Nc3 first and then 3.f4, the Grand Prix Attack of the Closed Sicilian.

Strengths and weaknesses

Strengths

  • A direct plan of kingside expansion.
  • Avoids the Open Sicilian main lines.

Weaknesses

  • 2...d5 hits the centre at once; the Tal Gambit is considered Black's best answer.
  • Players now usually prefer the move order 2.Nc3 and 3.f4.

Who should play it

The McDonnell Attack suits aggressive White players who want a kingside attack against the Sicilian and are ready to meet 2...d5; others reach the same plans more safely through 2.Nc3 and 3.f4.

The numbers

On Lichess Black does slightly better: White and Black are level under 1400 (48.3% against 48.6%) and at 1400–1799 (48.5% against 48.2%), while Black leads 49.1% against 46.7% at 1800–2199 and 48.4% against 45.6% from 2200 up. There are only about 2,700 master games, too few to draw firm conclusions.

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How to play against the Sicilian Defense: McDonnell Attack

2…d5 scores best for Black: 53.0%, with Black winning 50.9% and White 44.9% of 2.6M games. The most played, 2…Nc6, scores 50.4% in 7.9M games, and 2…d6 scores lowest: 48.9%. Stockfish's first choice is 2…e6.

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

The Sicilian Defense: McDonnell Attack peaked in 2019 at 0.86% of Lichess games and has slipped since: 0.74% in 2025.

Numbers by year
YearShare of gamesGames
20160.81%287,787
20170.81%447,224
20180.81%635,094
20190.86%1,074,413
20200.8%2,336,510
20210.78%3,054,097
20220.77%2,882,562
20230.75%2,816,134
20240.75%2,697,918
20250.74%2,562,415
2026 (Jan–Apr)0.74%811,878

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 (3)

Sources

Cite this page

Caissa Codex. “Sicilian Defense: McDonnell Attack (B21)”. Lichess data as of 6 Nov 2026. https://chesscodex.org/openings/sicilian-defense-mcdonnell-attack