The Pin Variation, Jaffe Variation is a variation of the Sicilian Defense, catalogued as ECO B40. The line runs 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 e5, reaching the position shown below after 12 half-moves.
Both sides have pawns in the centre (White on e4, Black on e5). Development is level at three minor pieces each. It is White to move after six 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 Pin Variation, Jaffe Variation goes 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 e5. It is a variation of the Sicilian Defense and is catalogued as ECO B40.
The Pin Variation, Jaffe Variation is ECO B40. 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 Nf6 5. Nc3 Bb4 6. Bd3 e5 at +0.59 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.
Both sides have pawns in the centre (White on e4, Black on e5). Development is level at three minor pieces each. It is White to move.