[Event "üòâLondon Systemüì¢: üòúBenoni‚úÇÔ∏è"]
[Site "https://lichess.org/study/MuAiQWCA/tdvPspT6"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/JoeNarz2009"]
[ECO "A45"]
[Opening "Indian Defense"]
[UTCDate "2021.03.27"]
[UTCTime "08:42:07"]
[Variant "Standard"]

{ The London System is not boring opening. It can be very tactical for white too, and there are sacrifices.
In this chapter I will show you a typical combination.

When you finish this chapter then click analysis below to see the other variations in this chapter! [%csl Bd4][%cal Bd2d4] } 1. d4 Nf6 2. Bf4 c5 { Nf6 + c5 = Benoni
Okay here you have two main options as white: e3/c3 (you are ready to accept a draw) or d5 (you play for a win).
We want to play for a win as white, so let's play d5 [%cal Gd4d5,Re2e3,Rc2c3] } 3. d5 { The idea is that we want to play into the Benoni Pawn Structures
Here black has two moves. Qb6 is more critical, but I cover d6 too [%csl Gd5][%cal Rd7d6,Rd8b6] } ( 3. e3 { As white, at this point you just have to hope and pray black doesn't play Qb6. If they play any other move then you just play c3 in a flash. (That way in case black ever plays Qb6 in the future, you can meet it with Qb3.) [%csl Gc3][%cal Bd8b6,Gc2c3,Gd1b3] } 3... Qb6 { OK......Black played Qb6. Now what?
I really don't recommend playing b3 here. Instead we should try to sacrifice a pawn with Nc3. } 4. Nc3 Qxb2 5. Nb5 { Na6 is worse; Nd5 is better [%cal Rb8a6,Gf6d5] } 5... Na6 ( 5... Nd5 6. Rb1 ( 6. a3 a6 7. Rb1 Qa2 8. Ra1 Qb2 9. Rb1 ) 6... Qxa2 7. Ra1 Qb2 8. Rb1 Qa2 9. Ra1 Qb2 ) 6. a3 { Idea is to play Bc4 and Ra2 trapping the queen.
Black is going to lose material here [%cal Gf1c4,Ga1a2] } 6... d6 ( 6... cxd4 7. Be5 e6 8. Bxd4 Bb4+ 9. axb4 Qxb4+ 10. c3 Qe7 ) ( 6... Nd5 7. Rb1 Qa2 8. Bg3 d6 ) 7. Bc4 Bf5 8. Ra2 Bxc2 9. Qxc2 Qxc2 10. Rxc2 ) 3... Qb6 { Here we don't want to play moves like Bc1, so the only other option is Nc3. [%cal Bb1c3,Rf4c1] } ( 3... d6 4. Nc3 e5 5. Bd2 ( 5. Bg5 Bf5 ( 5... h6 6. Bxf6 Qxf6 7. e4 Be7 8. Bd3 O-O 9. Nge2 a6 10. a4 Bg4 ) ) ) ( 3... b5 4. c4 d6 5. cxb5 a6 6. bxa6 Bxa6 ) 4. Nc3 { Here as white we must be willing to sacrifice the pawn and play aggressively. [%csl Rb2] } 4... Qxb2 { Here black got 1 pawn, but he's going to have to waste 3-4 tempi in exchange for it. As white here, that's usually a decent deal. [%csl Rb2][%cal Bd8b6,Bb6b2,Bb2b6,Bb6d8] } 5. Bd2 { Here black has to play Qb6- if he doesn't he will lose material (Qb4 and a6 still do work but they are inferior) [%csl Rb6][%cal Rb2b6,Yb2b4,Ya7a6] } 5... Qb6 ( 5... a6 6. Rb1 Qa3 7. e4 d6 ) 6. e4 d6 7. f4 { As white we must play aggressively and actively, so we need to attack in the center [%csl Ge5][%cal Gf2f4,Ge4e5] } 7... g6 { I will show you how one line can go } 8. e5 dxe5 9. fxe5 Nfd7 { [%csl Gf3,Ge5][%cal Gg1f3,Gd7e5,Gf3e5] } 10. Nf3 Bg7 { [%csl Gb1][%cal Ga1b1] } 11. Rb1 Qd8 { [%cal Ge5e6] } 12. e6 fxe6 { [%csl Gg5][%cal Gf3g5] } 13. Ng5 { [%cal Re6d5,Bg5e6,Be6d8] } 13... Nf6 14. Bb5+ Kf8 15. dxe6 Kg8 { [%csl Re1][%cal Be1g1] } 16. O-O { White has an edge here. All the pieces are out in the open and active [%csl Rh8,Ra8,Ge6,Gg5,Gf1,Gd2,Gd1,Gc3,Gb1,Gb5][%cal Yb1b7,Yf1f7,Yg5f7,Yg5e6,Yg5h7,Yd2h6,Yd2a5,Yb5a6,Yb5e8,Yc3d5,Yc3b5,Yc3e4,Yc3a4,Yd1h5,Yd1d8,Ye6f7,Ye6d7] } *