Larsen

Bent Larsen was born in Denmark in 1935 and became one of the leading Western players outside the Soviet bloc during the 1960s and 1970s. He won major events, including the 1967 Sousse Interzonal. An Interzonal was an international qualifying stage that led to the Candidates Tournament, which determined who could challenge the world champion.

Larsen reached the decisive stages of the world championship cycle several times and defeated many champions and leading contenders. His 6-0 loss to Bobby Fischer in the 1971 Candidates semifinal is famous, but it was only one episode in a much broader and highly successful career.

Originality with a purpose

He used a wide range of openings, the early phase of a game, and sought positions that his opponents understood less well, even when his first moves were not the most popular choices. This was not random eccentricity; it was a way to create different problems about piece placement and pawn advances. The written move 1.b3, in algebraic notation, means that on White's first turn the pawn on the b-file, the vertical column marked b, advances one square. It is so closely associated with Larsen that the system is often called Larsen's Opening. His creative independence recalls the tradition of Nimzowitsch, although Larsen developed his own competitive style.

A contender across several cycles

His world championship career covered more than one generation of rivals. He shared first place at the 1964 Amsterdam Interzonal and won the 1967 Sousse and 1976 Biel Interzonals. Those three results show consistency in a particularly demanding kind of event. Producing one brilliant game was insufficient: qualifying required scoring throughout a long tournament.

The year 1967 was especially strong. Larsen put together a sequence of major tournament victories and received the first Chess Oscar. In the 1970 USSR versus Rest of the World match, he played on the Rest of the World's first board. That responsibility helps establish his standing before the 1971 encounter with Fischer, whose overwhelming result sometimes unfairly obscures the wider career.

The purpose of leaving familiar theory

An unusual opening does not produce an advantage merely by surprising someone. After 1.b3, for example, the bishop can develop to b2 and influence the diagonal reaching h8. White still has to decide how to challenge the center, where to place the knights and when to advance the pawns. Allowing early central occupation can be coherent if that occupation will later come under pressure from pieces and pawn breaks.

The practical lesson concerns the relationship between familiarity and risk. An unfamiliar position can make both players think early, but it is a good choice only when the player proposing it understands its demands. In Larsen's games, pause before the tactics appear and identify the imbalance he wanted: an asymmetric structure, a misplaced enemy piece or the chance to play on a flank while the center stays stable.

Author and independent professional

Larsen also explained his decisions in game collections and instructional books. His comments allow readers to compare a position's later assessment with the practical problems he faced during play. For study, that distinction is more useful than memorizing a variation without context.

He died in Buenos Aires in 2010. His legacy combines the ambition to win major tournaments, a willingness to explore less familiar positions and an engaging approach to teaching. Reading him only through one defeat or through the move 1.b3 leaves out the essential part: how he turned a creative preference into a concrete chess struggle.

Annotated games

• USSR vs. Rest of the World 1970