Find the decisive blow (difficulty 945)

12345678 hgfedcba

Black to move

Show solution
12345678 hgfedcba
  1. f4–e2 key move
  2. f3–e2
  3. d6–h2

What makes it

A knight move and a 3-point sacrifice: mate in two. The same move hits two or more targets at once, and nothing covers them all. At 945, an approachable find.