These will hopefully help you to calculate Mate In 4 easier. Enjoy!
I'm sorry, but there's an error in your first puzzle. There is a M1 threat after 1...Rxd4.
Hello
There is no mate in 4 in first puzzle if opponent mover their rook to h4 that's mate for black
Thank you! :raised_hands
These will hopefully help you to calculate Mate In 4 easier. Enjoy!