27 Jun 2022 3 pm found one corner case: castling is still allowed after rook capture! 9 Jul 2022 afternoon fixed a corner case with promotion (earlier it always promoted to white pieces) 10 Jul 2022 after 12 am fixed a few corner cases with castling (pawns don't threaten blank squares) move count fixed planning to automate perft graphics??? afternoon another castling bug (capturing rook with king cleared only king's castling rights) reason: else