411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nd4/4. Nxe5/4...Qg5/5. Nxf7/5...Qxg2/6. Rf1/6...Qxe4
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Blackburne Shilling Gambit rd bd kd bd nd rd pd pd pd pd nl pd pd bl nd qd pl pl pl pl pl pl rl nl bl ql kl rl Italian Game
6...Qxe4+
White is completely lost. Black plays 6...Qxe4+, which allows for two options.
The worse of the two options doesn't seem the worst, but 7. Be2? allows the smothered mate (7...Nf3#) where the bishop is pinned.
Therefore White must give away the queen with 7. Qe2 and play on without that queen.Blackburne Shilling Gambit
Theory table
+7Qe2
Nxe2 -/+Be2?
Nf3#0-1