Wow, that's a really neat puzzle!
Mate in 16!

The objective of this excersice is beauty of chess, but not chess itself (you can see that because there is mate in 1) but it's fun!!

Nice puzzle. Not really my style but still it's nice. There is more then one faster mate. There is the seen mate in one, but further in the game, you can mate several times with the rook too. The ending position is very fun for sure.
This is a mate in 16, where you have to sacrifice all your pieces and make checkmate with only a knight. All the black moves are forced. The objective of this excersice is beauty of chess, but not chess itself (you can see that because there is mate in 1) but it's fun!! The order may vary a bit, but the moves are the same in every possible solution
Hope you enjoy it as much as i did