Find the decisive blow (difficulty 1530)

12345678 hgfedcba

Black to move

Show solution
12345678 hgfedcba
  1. h1–e4 key move
  2. e2–d2
  3. e4–e1

What makes it

The queen sets up a forced mate in 18. A fork: two or three pieces fall under attack together. The forced line runs 35 plies.