|Black to play after 6.Nxf7!?|
Mangion had looked over these lines and felt secure in being able to force a draw with 6.Nxf7!? against his higher rated opponent. After 6....Kxf7 (Karpov's 6....Qe7! is probably more interesting -- see my annotations) 7.Qh5+ Ke6!? 8.Qe2 (threatening f3 to regain the piece with attack), Kernighan likely should have chosen 8...Kf7 when White simply repeats with 9.Qh5+ etc. splitting the point. Instead, he chose the more "principled" but losing continuation 8....Kd6? when followed a typical Kernighan king walk and speedy victory for Mangion.
With his win over NM Kernighan, Mangion (rated 1971) has beaten two masters in as many weeks (having defeated KCC Champion Ken Chieu in the first game of the quad). If he has success in his final game, he may very well break the 2000 rating barrier.