Let's take a final look at a strange variation of the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf 7+) that we started with two days ago, and continued yesterday – see "A Strange, But Intriguing, Path (Part 1)" and (Part 2).
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+
4...Kxf7 5.Nxe5 Ke6
6.Qg4+ Kxe5
If White is going to have a chance in this variation, he must sacrifice the second piece. If Black then wishes to play on, he must accept the piece.
If 6.Qg4+ Kf6, then 7.Qf5+ Ke7 8.Qf7+ Kd6 9.Nc4 checkmate.
If 6.Qg4+ Kd6 7.Nf7+ wins.
If 6.Qg4+ Ke7 7.Qxg7+ Kd6 8.Nf7+ wins.
7.d4+
Again, best.
7...Bxd4
Capturing with the Knight turns out worse in the end: 7...Nxd4 8.Bf4+ Kf6 (8...Kxe4 9.Nc3 checkmate) 9.Bg5+ Kf7 10.Bxd8 and Black's threat to fork White's King and Rook doesn't work, i.e. 10...Nxc2+ 11.Kd2 Nxa1 12.Qh5+ Kf8 13.Qxc5+ Ke8 14.Bxc7 as White will get two pieces for the Rook after, say, 14...Nf6 15.Nc3.
analysis diagram
8.Bf4+ Kf6 9.Bg5+ Kf7 10.Bxd8 Nxd8
Or 10...Bxb2 11.Qf3+ Ke8 12.Bxc7 Bxa1 13.Na3 Nf6 14.0-0 when, despite Black having two pieces and a Rook for the Queen, Rybka sees White as a bit better!
analysis diagram
11.Qg3
Again, Rybka gives White the edge, not only because the b-pawn is protected (11...Bxb2 12.Qb3+) but because Black is undeveloped and his King is at risk.
This kind of analysis, treating the Jerome Gambit as if it were a "real" opening, is becoming more necessary as knowledge of the opening increases and its use becomes more widespread. Some lines now need preparation beyond a brave sense of advanture.
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