Is this position legal?
I think the pawns would need to take 8 pieces each side and the only have 7 to take, so illegal.
I stand corrected. It's 8 pieces all told not each side.
Doubt if there is anything much shorter. You could shave a couple of moves off the clean up once the pawns have crossed:
Or, with planning, do the clean up at the start. I'll look at it.
I stand corrected. It's 8 pieces all told not each side.
Doubt if there is anything much shorter .....
RewanDemontay is getting better at the proof game stuff all the time! Won't take long before I can't beat him anymore
Note: The above pieces are on the opposite side.
And that one definitely is illegal. The pawns can't all promote without any of them changing files, so you can't keep all the pieces.
Legal?
If it is it shouldn't be.
Is the h2 rook meant to be there or not? It's still appearing in your post.
As Arisktotle mentioned earlier.
I didn't think the Black queen was a particular difficulty. I only moved it twice.
Nice puzzle though.
Added a new one.
Not so obvious, but it is possible. The tricky part is that there is a way to "lose a tempo" depending on where you capture the first black knight.
No. It's illegal. Black cannot have made the last move in the position shown, but position #4 in post #1 specifies White to play.
To finish up with Black to play and the same board layout you need only ensure that of the four captures an odd number occur on light squares, remembering the last capture must be on the back rank (and of course avoiding checks).
Here's another possibility: