Illegal Position Contest!

White's last move was pawn from c3, to c4, blocking the check and discovered-checking in response to black's last move, King from e4 to e5.

Oh, I see... You set it as white to move, very smart...

Non too economical with the pieces. This would have done just as well.

Much better.

7692 is legal

Not a lot of pieces, but it's supposed to be illegal.

Yes, but it's in the category "both kings in check" which is always illegal without further analysis.

And then it changes under my eyes

Was in the category.

Btw, "Nf2" is necessary!

Wrong squares that time, sorry.

If the h7 pawn is removed, #7680 is legal. Can you make it legal by adding one unit?

Interestingly, #7680 with Be6 on h7 is still illegal. Except in chess960

I wish in chess960 the pieces didn't have to mirror each other.

I agree! Random setups for black and white. One player can choose the side he prefers, the other player gets the privilege to play the first move!