Chess Opening · A80

Dutch Defense

For sub-1000 ELO players

The Dutch Defense (ECO A80) starts when Black plays 1...f5, weakening the king's diagonal to attack on the kingside. Stockfish 17 at depth 25 confirms the Hopton Attack with 2. Bg5 as a sharp weapon that punishes the weakened e8-h5 diagonal. The most common mistake at sub-1000 ELO is treating the Dutch like a normal game and ignoring the holes Black created around the king. Play Bg5 early to exploit the dark square weakness and force Black into uncomfortable positions.

The Best Response

Moves to Play

White · Black alternating

◆1. d4 f5

◆2. Bg5 h6

◆3. Bh4 g5

◆4. e3 Nf6

Black plays f5 to fight for the center but weakens the king position. White plays Bg5 to attack the dark squares. Black usually tries to kick the bishop with h6 and g5, but this further weakens the king. White plays e3 to develop smoothly.

Who Stands Better

Computer score

+0.5

(slight advantage for White)

In plain terms+0.5 for White exploiting the weakened kingside

Copy these moves:

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e3 Nf6 5. Bd3

3 Mistakes Sub-1000 Players Make

These are the patterns we see in games below 1000 ELO. Fix these and you'll stop losing to this opening.

Ignoring the Weak e8-h5 Diagonal

After 1...f5, the diagonal from e8 to h5 is wide open. Beginners develop normally without exploiting it. A well-timed Qh5+ or Bg6 can end the game if Black is careless.

Best reply: Bg5

Why it happens: Not noticing that f5 opens a diagonal straight to the king

Playing c4 Too Early

White plays c4 on autopilot, heading for a quiet positional game. But against the Dutch, the priority is exploiting the kingside weakness before Black sets up a Stonewall with d5 and e6.

Best reply: Bg5

Why it happens: Playing standard d4 moves instead of targeting the weakened king position

Letting Black Set Up the Stonewall

If White plays passively, Black gets d5, e6, Bd6, and a knight on e4. The Stonewall structure is rock solid and very hard to break. White needs to act before Black builds this wall.

Best reply: Bg5

Why it happens: Developing slowly while Black builds an unbreakable pawn chain

Why This Opening Trips You Up

The Core Problem

The Dutch looks weird, so White does not know what to do. But 1...f5 is a real weakness. White just needs to target the holes instead of playing generic development.

Before Your Next Game

When you see 1...f5, play 2. Bg5. That one move immediately puts pressure on Black and makes them uncomfortable. You do not need deep theory to make this work.