Bad Day at the Rock

Here's a pleasant little knockout of the Euwe Defense from the Gibraltar Masters. Black wastes time with pawn-snatching by his queen and bishop, and then fails to guard f7 sufficiently. I'm fond of this Rxf7 sac when Black is locked in by a wall of his own pieces--a rook on e8, bishop on e7, and pawn on e6, having played it myself in many skittles and blitz games.

The PGN for this game is here. And what's a cockle?