Irony

If I could simply always remember everything that I once knew, my chess play would be stronger. Among the dozen or so miniatures that I regularly show to my chess students is one that I won in thirteen moves after showing up twenty minutes late for round two. From this position, I played my move, and after a few minutes thought, my opponent resigned.

White to move

Despite knowing every move in this game, I somehow failed this tactics exercise last night.

Black to move