[Event "Vienna System: Vienna Gambit: Main Line"]
[Site "https://lichess.org/study/UPHk9bvW/3D8qSlIG"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Annotator "https://lichess.org/@/raeyment"]
[ECO "C29"]
[FEN "rnbqkbnr/pppp1ppp/8/4p3/4P3/2N5/PPPP1PPP/R1BQKBNR b KQkq - 0 1"]
[Opening "Vienna Game: Vienna Gambit, Paulsen Attack"]
[SetUp "1"]
[UTCDate "2021.01.23"]
[UTCTime "19:57:47"]
[Variant "Standard"]

1... Nf6 { [%eval 0.13] } 2. f4 { [%eval 0.0] } 2... d5 { [%eval -0.13] In this position, white should take the pawn on e5 to put pressure on the knight on f6. [%cal Gf4e5,Ge5f6] } 3. fxe5 { [%eval -0.21] } 3... Nxe4 { [%eval -0.12] } 4. Qf3 { [%eval -0.17] In this position, black is left with three moves. [%cal Ge4c3,Gb8c6,Gf7f5] } ( 4. Nf3 { While this is the continuation of the main line, black is left with many options. [%cal Gc8g4,Gf8c5] } ) 4... Nxc3 { [%eval 0.0] } ( 4... Nc6 { [%cal Gc6e5] } 5. Bb5 Nxc3 6. dxc3 Qh4+ 7. g3 Qe4+ 8. Be3 Qxc2 { If black takes here, white can sacrifice the left side to gain the upper hand on blacks king. } ( 8... Qxf3 9. Nxf3 { [%cal Ge1c1] } ) 9. Ne2 Qxb2 10. O-O { [%cal Gf1f8] } 10... Qxb5 11. Qxf7+ Kd8 { While Bg5 is tempting, it is better to put the knight on d4. [%csl Gc6,Gb5][%cal Ge2d4,Re3g5] } 12. Nd4 { Because now if Nxd4, Bg5 is unavoidable checkmate. [%cal Ge3g5,Rc6d4] } 12... Nxd4 13. Bg5+ Be7 14. Qxe7# ) ( 4... f5 5. d3 Nxc3 6. bxc3 { White now wants to play d4 but black might play it first. [%csl Gd4][%cal Gd3d4,Gd5d4] } 6... d4 ( 6... Be6 7. d4 { White can also move out the knight instead of moving to d4 to attack the white bishop on e6. [%cal Ge2f4,Gg1e2] } ) 7. Qg3 dxc3 8. Be2 { The white square bishop can be brought up and sacrificed to allow the dark squared bishop to advance. } 8... Nc6 ( 8... g6 9. Bf3 { [%cal Gg1e2,Ge1g1] } ) 9. Bh5+ g6 10. Bxg6+ hxg6 11. Qxg6+ { [%cal Gc1g5,Ge5e6] } 11... Ke7 ( 11... Kd7 12. e6+ { [%cal Gd7d6,Ge6e7,Gg6c6] } 12... Kd6 13. e7+ Kxe7 14. Bg5+ { [%cal Gg5d8] } ) 12. Qg5+ ) 5. dxc3 { [%eval 0.0] } ( 5. bxc3 { Taking with the b pawn allows the centre to be rebuilt with the d pawn. [%cal Gd2d4] } 5... Be7 ( 5... c5 { If black plays this, white should no longer play d4. Instead, the black bishop can be punished for not having already moved with Qg3. [%cal Gc5d4,Rd2d4] } 6. Qg3 { [%cal Gg3g7] } ( 6. d4 cxd4 7. cxd4 Bb4+ { Because now it is difficult to defend the d and e pawns and whites king is in check. [%csl Re5,Rd4] } ) 6... g6 7. Nf3 { If black tries this, then our white bishop has two choices. Either trade itself with blacks knight on c6 or with blacks bishop on d3. Long term, white plans to open their f file by castling. White also has an open b file. [%csl Gd3,Gb5][%cal Gc2d3,Ga1b1,Ge1g1,Gf1b5,Gb8c6,Gb5c6,Gc8f5] } ) 6. d4 O-O ( 6... c5 7. Bd3 { The bishop is not trapped in this position, because it can move up to f5. [%cal Gc5c4,Gd3f5] } 7... c4 8. Bf5 Bxf5 9. Qxf5 { And white is fine. } ) 7. Bd3 Be6 ( 7... c5 8. Ne2 Nc6 9. O-O cxd4 10. cxd4 Nb4 11. Bf5 Bxf5 12. Qxf5 Qc8 13. c3 Qxf5 14. Rxf5 ) 8. Ne2 { White now aims to castle for king safety and to create a long term attack on the three pawns guarding the black king. [%csl Gf7,Gg7,Gh7][%cal Ge2f4,Ge1g1] } ) 5... Be6 { [%eval 0.16] } 6. Bf4 { [%eval 0.0] } 6... c5 $6 { [%eval 0.6] } ( 6... Nd7 7. Ne2 g5 8. Nd4 gxf4 9. Nxe6 fxe6 10. Qh5+ Ke7 11. Qh4+ ) 7. O-O-O { [%eval 0.48] In this position, the rook has the pin on the queen. Moving the bishop to c4 asserts this. If a bishop is on e6 we can develop our knight to h3 and g5. [%cal Gf1c4,Gd1d8,Gg1h3,Gh3g5] } *