Chess Opening Theory/1. e4/1...e6/2. d4/2...d5/3. Nc3/3...Bb4/4. Bd2/4...dxe4/5. Qg4/5...Nf6

Fingerslip variation C15 Fingerslip variation 5...Nf6 Black lets White take the g7-pawn, hoping to get some kingside counter play using the open g-file. White doesn't have anything better to do than to take the offered pawn. This leads to the following moves being practically forced: 6. Qxg7 Rg8 7. Qh6. Now Black is at another crossroads: 7...Qxd4 is the main line, restoring the material advantage. White can now continue 8. O-O-O to set up a discovered attack. This line in particular has a fairly odd continuation after 8...Bf8 9. Qh4 Rg4 10. Qh3 Qxf2 11. Be2!? Rh4 12. Qxh4 Qxh4 13. g3! and Black's queen is trapped. In the final position, White has a rook for a bishop and two pawns. 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 dxe4 5. Qg4 Nf6 6. Qxg7 Rg8 7. Qh6 Qxd4 8. O-O-O Bf8 9. Qh4 Rg4 10. Qh3 Qxf2 11. Be2 Rh4 12. Qxh4 Qxh4 13. g3 Black's queen is trapped Other than 8...Bf8, Black can also play Rg6, leading to similar ideas. This rook manoeuvre to chase White's queen is a common theme in these positions. 7...Rg6 and 7...Nc6 lead to similar ideas, but Black doesn't try to win another pawn and instead tries to catch up with White's development. From this point on there isn't much opening theory left. The opening hasn't seen enough usage to warrant deeper analysis, having only 63 games in the lichess database.Analysis board lichess.org https://lichess.org/analysis/pgn/e4_e6_d4_d5_Nc3_Bb4_Bd2_dxe4_Qg4_Nf6 Nowadays, engines give a slight edge to Black, making it an even less enticing option at grandmaster level. Theory table 0 6. Qxg7 Rg8 7. Qh6 Qxd4 8. O-O-O Bf8 9. Qh4 Rg4 10. Qh3 Qxf2 6. ... ... 7. ... ... 8. ... Rg6 9. Qh4 Qg4 6. ... ... 7. ... Nc6 8. O-O-O Rg6 6. ... ... 7. ... Rg6 8. Qh4 Nc6 References See also French Defence White's_fourth_move_alternatives