The Kan Variation, Wing Attack is a variation of the Sicilian Defense, catalogued as ECO B43. The line runs 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5, reaching the position shown below after 10 half-moves.
White holds the centre with pawns on e4. White is ahead in development, with two minor pieces out to Black's zero. It is White to move after five moves.
On the Sicilian Defense generally: The most popular and aggressive response to 1.e4. Black fights for the center asymmetrically, leading to rich tactical play.
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The Kan Variation, Wing Attack goes 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5. It is a variation of the Sicilian Defense and is catalogued as ECO B43.
The Kan Variation, Wing Attack is ECO B43. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Sicilian Defense.
Stockfish evaluates the position after 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 at +0.33 at depth 18, which is a slight pull for White, within normal opening margins. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
White holds the centre with pawns on e4. White is ahead in development, with two minor pieces out to Black's zero. It is White to move.