411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Bc4/2...Nf6/3. f4/3...Nxe4/4. fxe5/4...Qh4/5. Kf1
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Bishop's Opening: Berlin Defence, Greco Gambit
Bishop's Opening: Berlin Defence, Greco Gambit
5. Kf1??
This move may seem safe as it walks the king to a square that looks defended, but in fact it loses to an immediate checkmate, 5...Qf2#.