Promotion on my mind!!!
Puzzle
An Allumwandlung (German for complete promotion) is a puzzle that involves a pawn promotion. Depending on what move the defence tries the pawn promotion will change to the different pieces available (Queen, Rook, Bishop, Knight). Puzzle must include all 4 possible promotions (hence complete promotion). Difficult to solve all the possible lines and different promotions but even harder to create the puzzle in the first place. Oh and having promoted you must mate on the next move!!!
I have an Allumwandlung for you to try - and no I didn't create it!!!
I also have something a little easier - one of my games that involves an under promotion (incorrect as it happens). Can you find the right promotion?
Allumwandlung Puzzle
To make it a little easier I have shown the black responses here and the next move is obviously the promotion. Which promotion goes with which defensive move? There are 5 lines so one particular piece promotion occurs twice.
Solutions
Queen Promotion
Yes the Queen promotion has 2 lines
Rook Promotion
Must under promote otherwise Stalemate!!
Bishop Promotion
Under promotion is forced again
Knight Promotion
The Queen promotion doesn't fail due to Stalemate this time but you can't Mate immediately after the promotion (against the rules) so the under promotion is needed.
My under promotion
This was the finish and I promoted here immediately - yes I now know that was a mistake. If I had wasted a move with my King would of been able to promote to a Queen after Black King was forced to move. My only excuse was I had promotion on my mind.
What immediate promotion is possible here?
Hopefully you didn't promote with Queen or Rook as it is Stalemate so either Knight or Bishop here. If you avoided the Stalemate KingKev promotes you to Sir or Dame!!!
I chose Bishop here as it is the correct colour for the Rook's pawn ending - i.e it is the same colour as the promotion square so King can't stay in corner for well known draw. Here is what happened in game - ending probably not perfect here:
