A92 Dutch Defense: Classical Variation
A92 holds four named lines, all under the name Dutch Defense. It leaves A91, a position of the same name, with 5.Nf3 O-O. Black has castled kingside on move 5, while the other king still stands on its first square. No other Dutch Defense code shares this. None of its four lines contains a capture.
| # | White | Black |
|---|---|---|
| 1 | d4 | f5 |
| 2 | c4 | Nf6 |
| 3 | g3 | e6 |
| 4 | Bg2 | Be7 |
| 5 | Nf3 | O-O |
The move that completes A92
The reference line of A93 plays all of these moves and continues beyond them; A92 is the position reached at 5...O-O.
- 5...O-O Black castles kingside, opening a line for the queen on d8, guarding the pawn on g7.
Lines filed under A92
All four share their first ten plies, the whole reference line.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Dutch Defense: Classical Variation | (the shared start itself) | 10 | Black castled |
| Dutch Defense: Alekhine Variation | 6.O-O Ne4 | 12 | both castled |
| Dutch Defense: Stonewall Variation | 6.O-O d5 | 12 | both castled |
| Dutch Defense: Stonewall Variation | 6.O-O d5 7.Nc3 | 13 | both castled |
Dutch Defense: Alekhine Variation
- 6.O-O White castles kingside, opening a line for the queen on d1, guarding the bishop on g2.
- 6...Ne4 The knight goes from f6 to e4, opening a line for the bishop on e7 and the rook on f8.
Dutch Defense: Stonewall Variation
- 6.O-O White castles kingside, opening a line for the queen on d1, guarding the bishop on g2.
- 6...d5 The d-pawn advances two squares to d5, covering c4 and e4, opening a line for the bishop on c8 and the queen on d8.
Dutch Defense: Stonewall Variation
- 6.O-O White castles kingside, opening a line for the queen on d1, guarding the bishop on g2.
- 6...d5 The d-pawn advances two squares to d5, covering c4 and e4, opening a line for the bishop on c8 and the queen on d8.
- 7.Nc3 The knight leaves b1 for c3, opening a line for the rook on a1.
The road to A92
- 1.d4 … 3...e6five earlier stops: A40, A80, A84, A86
- 4.Bg2A90 Classical Variation
- 4...Be7A91 Classical Variation
- 5...O-OA92
The position after 5...O-O
White has brought out the knight on f3 and bishop on g2; Black the knight on f6 and bishop on e7. White is to move and has 36 legal moves.
Codes that branch off from A92
The reference lines of three other codes leave A92 from three of its named positions; “From” gives the last part of that position’s name.
| Code | From | Moves | Reference line |
|---|---|---|---|
| A93 | Stonewall Variation | 7.b3 | Dutch Defense: Stonewall Variation, Botvinnik Variation |
| A95 | Stonewall Variation | 7...c6 | Dutch Defense: Stonewall Variation |
| A96 | Classical Variation | 6.O-O d6 | Dutch Defense: Classical Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A90 | Dutch Defense: Classical Variation | seven squares: g1, f3, e7, e8, f8, g8, h8 |
| A87 | Dutch Defense: Leningrad Variation | eight squares: e6, g6, e7, g7, e8, f8, g8, h8 |
| E05 | Catalan Opening: Open Defense, Classical Line | eight squares: c4, f5, d7, f7, e8, f8, g8, h8 |
| E06 | Catalan Opening: Closed | eight squares: d5, f5, d7, f7, e8, f8, g8, h8 |
| E04 | Catalan Opening: Open Defense | nine squares: c4, f5, d7, e7, f7, e8, f8, g8 … |
| E07 | Catalan Opening: Closed | nine squares: e1, f1, g1, h1, d5, f5, d7, f7 … |
| E17 | Queen’s Indian Defense: Traditional Variation | nine squares: f5, b6, b7, f7, c8, e8, f8, g8 … |
Where lines continue from here
Eleven named lines filed under other codes pass through the position after 5...O-O. Besides the codes above, they belong to A94, A97, A98, A99.