The Kasparov-Petrosian Variation, Kasparov Attack is a variation of the Queen's Indian Defense, catalogued as ECO E12. The line runs 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2, reaching the position shown below after 13 half-moves.
White holds the centre with pawns on d4. Development is level at two minor pieces each. It is Black to move after seven moves.
On the Queen's Indian Defense generally: A flexible defense to 1.d4 where Black fianchettoes the queen's bishop to control e4.
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The Kasparov-Petrosian Variation, Kasparov Attack goes 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2. It is a variation of the Queen's Indian Defense and is catalogued as ECO E12.
The Kasparov-Petrosian Variation, Kasparov Attack is ECO E12. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Queen's Indian Defense.
Stockfish evaluates the position after 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 at +0.03 at depth 18, which is balanced. 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 d4. Development is level at two minor pieces each. It is Black to move.