Witty problems!
Both are good the second one I ot easily but the first one I got all the moves except castling there's no indication to shpw that there's castling. But nice and witty. Did you make them yourself?
Turm, can you explain the puzzle as why white and blackplay those moves I just can't seem to get it.
The first move by white is a very strong mating threat in 2.
Black cannot defend, but he can threaten a perpetual with the rook because of stalemate ideas.
White can only make progress by defending the perpetual threats.
If he could play Pg4-g3, he would succeed immediately. But unfortunately, pawns must not move backwards. Therefore white has to go all way to g8 and make a queen which is kind of a pawn that CAN move backwards. That is the actual joke of this problem.
The last moves are not completely thematic, but a slightly faster sideline.
In the first puzzle after bxa6 why doesn't black king take the pawn?
Going for stalemate is black's only chance to play for a draw. If Kxa6, there is nothing black can do after Ba3. White will simply play Nc3 next and win. With Ka8 however, there is the trick Rxb1+ and white cannot capture because of Rf1+ and stalemate. Therefore the double switchback Bc1 and Rb8 is forced, after which white can finally play Bb2. (With the knight on b1, Bb2 is mate after Rbf8 and Rf1#)
So the joke in this problem is how to remove the Nb1 to allow castling.