Library/Openings/English Opening/King's English Variation/Closed System ECO A25
Opening· 9 plies

English Opening: King's English Variation, Closed System

An entry in the Encyclopedia of Chess Openings (ECO A25), reached after 9 half-moves: 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3.

English Opening: King's English Variation, Closed System ECO A25
87654321
abcdefgh
Black rook
Black bishop
Black queen
Black king
Black knight
Black rook
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black bishop
Black pawn
Black knight
Black pawn
Black pawn
White pawn
White knight
White pawn
White pawn
White pawn
White pawn
White pawn
White pawn
White bishop
White pawn
White rook
White bishop
White queen
White king
White knight
White rook
9/9
  1. 1.
  3. 2.
  5. 3.
  7. 4.
  9. 5.
Use ← → arrows or click moves to step through.

Continue from this position

One reply continues into a sub-variation from this position. Click any to drill deeper.

About this opening

English Opening: King's English Variation, Closed System is an opening in the Encyclopedia of Chess Openings, classified under code A25. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 9 half-moves from the starting position, with the move sequence 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3.

It belongs to the English Opening family. Within that family this is a level-2 branch (the King's English Variation → Closed System line). The immediate parent line is English Opening: King's English Variation, transitioned via 5.d3.

The opening sequence in prose form: 1.c4 e5, 2.Nc3 Nc6, 3.g3 g6, 4.Bg2 Bg7, 5.d3. From this position exactly one named continuation is recorded in the encyclopaedia.