B78

Sicilian Defense: Dragon Variation, Yugoslav Attack 9…Bd7 10. O-O-O

Chess diagram: Sicilian Defense: Dragon Variation, Yugoslav Attack after 10. O-O-O

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Statistics from Lichess

442,073 games: White 47.2% / Draw 5.1% / Black 47.7%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
Old Line 242,829243K
49,24749K
43,66644K
Chinese Dragon 40,38840K
31,85332K
8,3238,323
5,7295,729
5,5265,526

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 27, 2026

Engine evaluation

+0.49 White is slightly better

Best play: 10... Rc8 11. Nxc6 Bxc6 12. Bb3 b5 13. Bxa7 b4 14. Nd5 Nxd5 15. exd5

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 52% under 1400, 48% at 2200 and up and 59% in master games (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 4,852
1400–1799 52K
1800–2199 281K
2200 and up 121K
Masters, over the board 3,604

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

Sicilian Defense: Dragon Variation, Yugoslav Attack (ECO B78, Semi-Open Games) is a variation of the Sicilian Defense: Dragon Variation, Yugoslav Attack, reached after 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O (10 moves).

In 442,073 rated Lichess games between players rated 1600 to 2500, White won 47.2%, Black 47.7% and 5.1% were drawn. Black's most played move here is 10…Rc8, in 55% of those games.

It branches into 3 named variations; the most played are Sicilian Defense: Dragon Variation, Yugoslav Attack, Old Line and Sicilian Defense: Dragon Variation, Yugoslav Attack, Chinese Dragon. In all, 4 named lines continue from it.

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How to answer 10. O-O-O

10…Rb8 (Chinese Dragon) scores best for Black: 54.1%, with Black winning 51.6% and White 43.4% of 40K games. The most played, 10…Rc8, scores 51.0% in 243K games, and 10…a6 scores lowest: 39.5%. Stockfish's first choice is 10…Rc8.

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 has lost ground since 2016: 0.012% of Lichess games in 2025, down from 0.021% (its peak: 0.026% in 2018).

Numbers by year
YearShare of gamesGames
20160.021%7,603
20170.025%13,552
20180.026%20,652
20190.022%27,830
20200.026%75,795
20210.02%76,283
20220.016%58,891
20230.014%52,498
20240.013%47,503
20250.012%42,064
2026 (Jan–Apr)0.012%13,061

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)

All 4 named lines that continue from here

Cite this page

Caissa Codex. “Sicilian Defense: Dragon Variation, Yugoslav Attack (B78)”. Lichess data as of 27 Oct 2026. https://chesscodex.org/openings/sicilian-defense-dragon-variation-yugoslav-attack-4