I don't quite understand: should I consider "en passant, castling and promotion" legal or illegal moves?

Or they just won't appear in the judge input?

Just think that there are no usual rules about these moves in the Ostap's chess.

Thank you,
got AC.

Just stupid bug, as always :)

Have you considered some tricky cases? (I get wrong answer on test 9, even though it passes all my tests, and some famous ones, with more than 60 moves, taken from the internet :) )

In this test more then one king on black or white, I dont remember. But I have WA on 20 test, and I also dont know why?

Well, now I'm stuck on the same test case :) But if such denaturated inputs are possible, then I think there's a problem with the problem statement... Who knows what other situations are possible?????

Liviu I know what intersting in 20 test. In first move one side cuts the king of other side, and this move are correct!!!  I got AC!

Great job!