Larsen's Opening

b3 Level: INTERMEDIATE

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Larsen's Opening (1.b3) prepares to fianchetto the queen's bishop and exert long-term pressure on the central light squares.

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Key ideas

Fianchetto queenside bishop; Control light squares; Build flexible structure; Avoid main-line theory

Strengths

Flexible development; solid structure; strong diagonal control; avoids theory

Watch out for

Slow central influence; can become passive if Black challenges the center actively

Typical pawn structure

Fianchettoed queenside bishop; flexible center

Common mistakes

Too passive; Weak central control; Allowing Black easy equality; Misplacing pieces

History

Popularized by Danish Grandmaster Bent Larsen in the 1960s and 1970s.

Famous games

Larsen games introducing the opening

Related openings

Alekhine's Defense

e4 Nf6

Benko Gambit

d4 Nf6 c4 c5 d5 b5

Benoni Defense

d4 c5 d5

Bird's Opening

f4

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