Benko Gambit: Zaitsev System
The Zaitsev System is 4.cxb5 a6 5.Nc3, where White develops instead of taking a second pawn. White wants e4 and active pieces, sometimes with a4 to hold b5; Black wants to win back b5 and strike at d5.
- Moves
- 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3
- ECO
- A57
- Engine
- +0.29 · level (Stockfish 17.1, depth 20)
- Played
- 312 games in our lichess sample
- White scores
- 47.9%
Key ideas for both sides
White
- After 5...axb5 6.Nxb5, the knight is strong on b5 and White keeps play against d6 and c7.
- Against slow moves like 5...g6, play e4 and a4 to keep the b5 pawn, as the third engine line does.
- Meet ...Qa5 with bxa6 and Bd2, breaking the pin on c3 and keeping an extra pawn.
Black
- Take 5...axb5 and, after 6.Nxb5, play ...e6 to hit d5 and open the center.
- In the engine line 7...Nxd5 8.Nxd5 exd5 9.Qxd5, White's queen stands in the open and Black's rook on the a-file eyes a2.
- 5...Qa5 pins the c3 knight; after bxa6, recapture with the bishop and trade it off via ...Bxf1.
Plans and pawn structure
If Black recaptures on b5, the position opens: White's knight jumps to b5 and Black answers in the center with ...e6, so the a-file and the center matter more than the usual Benko pressure. If Black plays slowly, White builds e4 and a4 and holds b5, leaving Black a pawn down with little play. In the ...Qa5 line, both sides head for a standard Benko structure where White's king walks to f1 and the queenside files decide.
What the engine plays from here
Stockfish 17.1 at depth 20 rates the position +0.29: level. Its three top choices for Black:
- +0.29 5...axb5 6.Nxb5 e6 7.Nc3 Nxd5 8.Nxd5
- +0.74 5...Qa5 6.bxa6 Bxa6 7.Bd2 g6 8.e4
- +1.26 5...g6 6.e4 d6 7.a4 Bg7 8.Nf3
Pawns, from White's side.
How it scores on lichess
312 rated lichess games reached this position; White scored 47.9%.
Light: White wins. Grey: draws. Dark: Black wins. About the sample.
Where it goes next
- Nescafe Frappe Attack5...axb5 · rare
How to play against it
Recapture with 5...axb5 and follow with ...e6 to hit d5. Do not drift with ...g6 and ...d6, since a4 and e4 lock the queenside and leave you without targets. If you want a standard Benko, 5...Qa5 is a sound alternative.
Questions
What are the moves of the Benko Gambit: Zaitsev System?
The Benko Gambit: Zaitsev System starts 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3. Its ECO code is A57.
Is the Benko Gambit: Zaitsev System good for White?
Stockfish 17.1 rates the position +0.29 at depth 20, which is level. In 312 lichess games from our sample, White scored 47.9%. A sharp, active option for White that rewards precise development; Black must react quickly in the center rather than playing standard Benko moves.
What is the main idea of the Benko Gambit: Zaitsev System?
White develops the knight to c3 instead of capturing on a6, aiming for e4 and sometimes a4 to keep b5. Black's best answer is to take on b5 and hit d5 with ...e6, opening the center before White is ready.
What should Black play next?
The engine's first choice is axb5, with Qa5 and g6 close behind. 5...axb5 wins back a pawn and invites 6.Nxb5, after which ...e6 strikes at d5.
Related lines
Updated October 2026. Sources and method.