B91

Sicilian Defense: Najdorf Variation, Zagreb Variation

Chess diagram: Sicilian Defense: Najdorf Variation, Zagreb Variation after 6. g3

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Statistics from Lichess

275,423 games: White 48.2% / Draw 5.9% / Black 45.9%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
143,159143K
58,85459K
27,87028K
16,70717K
13,00513K
3,9583,958
3,5283,528
3,4083,408

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 1, 2026

Engine evaluation

+0.17 The position is about equal

Best play: 6... e5 7. Nde2 Be7 8. Bg2 O-O 9. O-O b5 10. Nd5 Nxd5 11. Qxd5

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 52% under 1400, 53% at 2200 and up and 52% in master games (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 9,953
1400–1799 63K
1800–2199 155K
2200 and up 77K
Masters, over the board 3,921

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: Najdorf Variation, Zagreb Variation (ECO B91, Semi-Open Games) is a variation of the Sicilian Defense: Najdorf Variation, reached after 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 (6 moves).

In 275,423 rated Lichess games between players rated 1600 to 2500, White won 48.2%, Black 45.9% and 5.9% were drawn. Black's most played move here is 6…e5, in 52% of those games.

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How to play against the Sicilian Defense: Najdorf Variation, Zagreb Variation

6…e6 scores best for Black: 50.2%, with Black winning 47.4% and White 47.0% of 59K games. The most played, 6…e5, scores 48.8% in 143K games, and 6…b5 scores lowest: 47.7%. Stockfish's first choice is 6…e5.

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: Najdorf Variation, Zagreb Variation has lost ground since 2016: 0.0079% of Lichess games in 2025, down from 0.01% (its peak: 0.016% in 2020).

Numbers by year
YearShare of gamesGames
20160.01%3,748
20170.014%7,618
20180.015%12,015
20190.016%19,949
20200.016%47,259
20210.012%45,163
20220.0099%36,992
20230.0091%34,083
20240.0081%29,043
20250.0079%27,389
2026 (Jan–Apr)0.0076%8,343

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

Cite this page

Caissa Codex. “Sicilian Defense: Najdorf Variation, Zagreb Variation (B91)”. Lichess data as of 1 Nov 2026. https://chesscodex.org/openings/sicilian-defense-najdorf-variation-zagreb-variation