The Hort-Antoshin System is a variation of the Dutch Defense, catalogued as ECO A86. The line runs 1. d4 f5 2. c4 Nf6 3. g3 d6 4. Bg2 c6 5. Nc3 Qc7, reaching the position shown below after 10 half-moves.
White holds the centre with pawns on d4. Development is level at two minor pieces each. It is White to move after five moves.
On the Dutch Defense generally: An aggressive response to 1.d4 where Black immediately fights for control of the e4 square.
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The Hort-Antoshin System goes 1. d4 f5 2. c4 Nf6 3. g3 d6 4. Bg2 c6 5. Nc3 Qc7. It is a variation of the Dutch Defense and is catalogued as ECO A86.
The Hort-Antoshin System is ECO A86. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Dutch Defense.
Stockfish evaluates the position after 1. d4 f5 2. c4 Nf6 3. g3 d6 4. Bg2 c6 5. Nc3 Qc7 at +0.69 at depth 18, which is a small but real edge for White. 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 White to move.