Find the decisive blow (difficulty 1370)

87654321 abcdefgh

White to move

Show solution
87654321 abcdefgh
  1. c5–b7 key move
  2. d8–e7
  3. c1–c4
  4. g8–c4
  5. b3–a5
  6. c4–e6
  7. g1–c5
  8. e7–f7

What makes it

The knight settles the game. It calculates 8 plies deep. Rated 1370 — a demanding calculation.