Dutch Defence
Black's 1...f5 stakes a claim to the e4-square and envisions an attack in the middlegame on White's kingside; however, it also weakens Black's kingside to an extent (especially the e8–h5 diagonal).[1] Like its 1.e4 counterpart, the Sicilian Defence, the Dutch is an aggressive and unbalancing opening, resulting in the lowest percentage of draws among the most common replies to 1.d4.[2] Historically, White has tried many methods to exploit the kingside weaknesses, such as the Staunton Gambit (2.e4) and Korchnoi Attack (2.h3 and 3.g4).
The Dutch has never been a main line against 1.d4 and is rarely seen today in high-level competition, although a number of top players, including Alexander Alekhine, Bent Larsen, Paul Morphy, Miguel Najdorf, and Hikaru Nakamura[3] have used it with success. Its most notable use may have been in 1951, when both world champion Mikhail Botvinnik and his challenger, David Bronstein, played it in their 1951 World Championship match.
Elias Stein (1748–1812), an Alsatian who settled in The Hague, recommended the defence as the best reply to 1.d4 in his 1789 book Nouvel essai sur le Jeu des échecs, avec des réflexions militaires relatives à ce jeu.[4]
Siegbert Tarrasch rejected the opening as unsound in his 1931 work The Game of Chess, arguing that White should reply with the Staunton Gambit, with White being better after 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 c6 5.f3! exf3.[5]
White most often fianchettoes their king's bishop with g3 and Bg2. Black also sometimes fianchettoes their king's bishop with ...g6 and ...Bg7 (the Leningrad Dutch), but may instead develop their bishop to e7, d6 (after ...d5), or b4 (the latter is most often seen if White plays c4 before castling). Play often runs 2.g3 Nf6 3.Bg2 e6 4.Nf3 (4.Nh3!? is also possible, intending Nf4–d3 to control the e5-square Black plays the Stonewall Variation) 4...Be7 5.0-0 0-0 6.c4 and now Black chooses between 6...d5 (the characteristic move of the Stonewall), 6...d6, the Ilyin-Zhenevsky Variation (less popular today), or Alekhine's move 6...Ne4!? retaining the option of moving the d-pawn either one or two squares.
The opening's attacking potential is shown in the Polish Immortal, in which Miguel Najdorf, using the Stonewall Variation, sacrificed all of his minor pieces to win by checkmate.
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