From the "Chess Akt" book "500 chess puzzles". See the game at https://lichess.org/lssOWSHm
Subtitle: Mate in 5. Advanced & Expert Level.
Playing against computer, checkmate in 4 instead of 5?

From the "Chess Akt" book "500 chess puzzles". See the game at https://lichess.org/lssOWSHm
Subtitle: Mate in 5. Advanced & Expert Level.
Playing against computer, checkmate in 4 instead of 5?

The analysis game do the checkmate in 5, getting rid of the tower first.