Came up with this an hour ago. All the standard pawns are replaced with standard rooks and the rooks with pawns. Black kept winning(!), first with a king-and-queen mate and then a much faster queen-and-bishop mate, so I have given the computer three minutes to think about every move. This computer gaming program will be the end of me.
Black wins again with 29. ... Qf7#. White sacrificed its Queen on move 7 when it could have instead easily used a Knight or Rook to take back. I can't tell if I broke the engine with too many available Rook moves or if the game is just somehow massively skewed for Black.
Zillions' weird notation below: