Illegal Position Contest!

Starlink to move

ignore the color palette guys i made this in keynote

black's in check while it's white's turn

not an interesting position

It was easier to ignore the whole post.

#8906 is legal.

Oh dear, didn't realise that cook existed. I thought I could be adventurous with the c-pawn but it backfired.

Try this instead:

With wRb1 on a1, this would be legal. Retract the following moves:

However, with wR on b1, we have to retract a black pawn to g6, and the uncaptured bRg7 cannot get to a1 to unpromote.

A black Rook is the only candidate to unpromote on a1. A black Q cannot get there without disturbing the white K. N and B are locked out by the pawn structure.

I know it’s very boring but I had no time guys

wait can i say this doesn't count

This position with white to move, I'm not sure:

I think any starting position with an odd number of knights and white to move is impossible because neither the knights or rooks can lose a move.

It's White's turn to move next.

No, it's Black's turn to move next.

Oh I totally overlooked the knight going to the a8 square and being captured by the rook lol nvm.

A black queen, rook, bishop, or knight.

I agree with n9 - it does not matter what piece was captured on f8. Here is a retraction with bQ as that piece: