20 Nf4-g6! exploits disc against undef e5-queen to win exchange D Andreikin vs Khenkin, 2013  (B12) Caro-Kann Defense, 27 moves, 1-0 28 Ne4-g5++! 1-0 interposes Black's discovered check on g-file R Garcia vs E Figueroa, 1963  (A10) English, 28 moves, 1-0 2 games