Benoni Defense: Modern Variation

The Modern Benoni (1.d4 Nf6 2.c4 c5 3.d5 e6) is one of Black's sharpest and most active defences to 1.d4. After ...exd5 and cxd5 the pawn structure becomes unbalanced: White gets a central majority and Black a queenside majority.

Origins

Frank Marshall introduced it at the 1927 New York tournament, drawing with Capablanca and losing to Nimzowitsch. The name "Modern Benoni" appeared in print by 1955. In the 1950s Soviet players revived it. Mikhail Tal adopted it in 1953 after seeing a game by Rashid Nezhmetdinov, and used it in his 1960 world championship match against Botvinnik. Bobby Fischer played it in game 3 of his 1972 match against Boris Spassky, a win that changed the momentum of the match. Garry Kasparov beat Viktor Korchnoi with it at the 1982 Lucerne Olympiad.

The idea

After 4.Nc3 exd5 5.cxd5 d6, Black fianchettoes the bishop on g7 and plays on the queenside with ...a6, ...b5 and ...c4, supported by the long-diagonal bishop. The central majority is White's main positional trump, and the e4–e5 break is its most important tool: it can open lines for White's pieces and create a passed d-pawn. As Lev Psakhis wrote, the Modern Benoni "is definitely not an opening for cowards", since Black aims to counterattack rather than equalize.

Main lines

• Classical Main Line 7.Nf3 Bg7 8.Be2 O-O 9.O-O: the historical standard.
• Modern Main Line 7.Nf3 Bg7 8.h3 O-O 9.Bd3: prevents ...Bg4 and became critical in the late 1980s.
• Taimanov Attack 7.f4 Bg7 8.Bb5+: White stakes out even more central space and threatens a quick e4–e5.
• Fianchetto Variation with g3.
• The Snake Variation 5...Bd6 is a rare offbeat alternative.

Strengths and weaknesses

Strengths

• A fighting, unbalanced position from move three, with real winning chances for Black.
• Active piece play and a clear queenside plan.
• Its reputation recovered in the 21st century, as new defensive resources were found.

Weaknesses

• Risky: in the 1980s and 1990s the Taimanov Attack and the Modern Main Line caused it a serious theoretical crisis.
• White's e4–e5 break can be very dangerous if Black is slow.
• Black must know several different White systems: the Classical and Modern main lines, the Taimanov Attack and the Fianchetto.

Who should play it

The Modern Benoni is for combative, well-prepared players who want to play for a win with Black against 1.d4 and don't mind taking risks. It is effective against positional players who are uncomfortable in sharp play. It is least suitable for players who want safety, since White's attacking chances are real.

The numbers

On Lichess, below 1800 White wins 51–53% and Black 44–46%. Between 1800 and 2200 Black is ahead, 48% against 47%. Above 2200, White leads 49% to 45%. In master games over the board White wins 44%, Black 26%, and 30% are drawn.