Benko Gambit - Zaitsev System
In the Zaitsev System White develops with 5.Nc3, answers ...axb5 with e4 and, after ...b4, brings the knight to b5. Black must control c7 and e5 and then counterattack the centre.
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.e4 b4 7.Nb5 d6 8.Nf3 Nbd7
Move by move
- 1.d4 – White occupies the centre with the queen's pawn and frees the c1 bishop. Against 1.d4 this course offers two systems based on ...c5: the Benko and the Benoni.
- 1...Nf6 – A flexible move: it controls e4, stops 2.e4 and does not yet reveal the structure. It is better to wait for 2.c4 before ...c5, so that White cannot answer with a comfortable e2-e4.
- 2.c4 – White gains space and controls d5. However, the c4 pawn will support a future pawn on d5: it is exactly the target the Benko will hit with ...b5.
- 2...c5 – Black hits d4 at once. After 3.Nf3 cxd4 the structures become symmetrical; the main reply is 3.d5, which gains space but creates the c4-d5 chain that Black will undermine.
- 3.d5 – White advances, gaining space and taking c6 away from the b8 knight. Now the d5 pawn depends on c4: Black can choose between ...b5 (Benko) and ...e6 (Benoni).
- 3...b5 – The Benko Gambit: Black offers the b-pawn to undermine c4, the support of d5. If White accepts, after ...a6 the a- and b-files open for Black's rooks.
- 4.cxb5 – White accepts the pawn, the most direct choice. Black is in no hurry to win it back: he offers the a-pawn too in order to open lines.
- 4...a6 – Black offers a second pawn. After 5.bxa6 the bishop recaptures on a6, developing with tempo, and the a- and b-files become highways for the rooks against a2 and b2.
- 5.Nc3 – The Zaitsev System: White ignores the a6 pawn and develops, ready to give back the b5 pawn in exchange for e4 and active central play.
- 5...axb5 – Black regains the pawn and opens the a-file for the a8 rook. The b5 pawn can now advance to b4, hitting the c3 knight.
- 6.e4 – White occupies the centre and threatens e4-e5 against the f6 knight. If Black does nothing, Bxb5 is also possible.
- 6...b4 – Black gains time on the c3 knight, driving it away from the defence of e4 and d5. The b4 pawn becomes a spearhead on the queenside.
- 7.Nb5 – The knight jumps to b5, the most active square: it eyes d6 and c7, where Nc7+ could fork king and rook if the queen stops guarding c7.
- 7...d6 – An essential move: it takes d6 away from the knight and prevents e4-e5. The d8 queen keeps covering c7 against the Nc7+ jump.
- 8.Nf3 – White develops and supports the e5 push. The e4 pawn, however, is lightly defended: Black can pressure it with his knight and minor pieces.
- 8...Nbd7 – The knight reinforces e5 against White's push and can continue to b6 to attack d5. The a6 square remains free for the bishop, which will want to challenge the b5 knight.
How to exploit the position
Material is level: White has a strong centre and an active knight on b5, Black has the open a-file and the b4 pawn, which takes c3 away from White's pieces.
- The bishop goes to a6 to exchange the b5 knight or the f1 bishop: without those pieces White controls the light squares less well.
- The e4 pawn is lightly defended: the f6 knight, together with ...g6 and ...Bg7, increases the pressure on White's centre.
- The d7 knight can go to b6 to attack d5, the weak point if White does not support it with Bc4.
- Always keep c7 and e5 covered: White's threats are based on these two squares.
Master tips
Always protect c7
The b5 knight threatens Nc7+, forking the king and the a8 rook as soon as the queen stops defending c7.