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Openings

Benoni Defense: Cormorant Gambit

d4 c5 dxc5 b6

Black defense. The named position is usually reached after d4 c5 2. dxc5 b6 and tends to produce flexible practical play.

Blackd4Dynamic1.d4black led
Theory 46
Games 99K
Family Benoni Defense
Opening Profile
Sharpness58
Solidity54
Counterplay72
BeginnerPlayable, but easier once the basic tactical and structural themes of the opening family already make sense.
ClubVery practical at club level because opponents often misjudge the imbalances and timing.
AdvancedMore of a practical repertoire branch than a lifetime theory project, but still worth knowing well.
Starting position0 / 4

Black defense. The named position is usually reached after d4 c5 2. dxc5 b6 and tends to produce flexible practical play.

Variations
White's Plans
Use the first moves to ask Black whether the setup can hold its structure once development accelerates.
Track the c- and e-pawn breaks closely because they usually decide whether White gets a squeeze or just equal tension.
Improve the worst-placed piece first so the opening edge turns into a usable middlegame advantage.
Black's Plans
Coordinate the position first, then choose the central or wing break that makes White's setup uncomfortable.
Look for active counterplay on the files or dark squares instead of drifting into passive defense.
Accept a little structural risk if it buys piece activity and practical initiative.
Win Rate Across All Games
40.8% White5.9% Draw53.3% Black
99K
Games
46
Theory Depth
4
Main Line Ply
Typical Structures
Typical structure depends heavily on whether the central tension resolves early or stays fluid for several moves.
Use the sample line and transpositions to identify which pawn break really defines the family in practice.
Key Motifs
Initiative-for-material themes where open files matter more than the extra pawn count.
Counterblows in the center just after the opponent commits to a flank plan.
Queen's-pawn structures where the right central break matters more than immediate tactics.
Balanced middlegames where transpositions and move-order nuance matter more than memorized traps.
Key Lines
Benoni Defense: Old BenoniNamed continuation in the same opening family.
d4 c5
Benoni Defense: Benoni Gambit AcceptedNamed continuation in the same opening family.
d4 c5 dxc5
Benoni Defense: Old BenoniNamed continuation in the same opening family.
d4 c5 d5
Benoni Defense: Zilbermints-Benoni GambitNamed continuation in the same opening family.
d4 c5 b4
What Usually Goes Wrong
If the central break never lands on time, the position can become strategically unpleasant very quickly.
The named entry arrives early, so opponents may reach the same structure from a different move order.
Move Order & Transpositions
Known as the Cormorant Gambit branch inside the Benoni Defense family.
This named entry appears early, so many practical games continue by transposition after the listed move order.
This page combines catalog reference data with ChessRef study notes rather than a fully expanded guide.
How to Prepare
Memorize the first 4 ply and the first branching decision, not just the catalog name.
Review the related openings and transpositions so alternate move orders do not hide the same structure from you.
Collect a few of your own games in the line and annotate the middlegame plans before adding more theory.
It stops fitting if you want Black positions that create instant imbalance without a patient middlegame plan.
See This In Your Games

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