You Accidentally Set the Board up Backwards. What do you do now?
White Plays Nf6 first move. Black MUST play Nc3 or he gets mated in 2 moves via Nf6-g4-d6.
For Example, 1.Nf6 Nc3! 2.Ng4 Ne4! and black stops the mate. I would have to imagine white being better here though.
The letters and numbers on the side of the board have no legal meaning, so the setup is legit. I have seen players accidentally start a game with the king and queen switched (K on d1/d8, Q on e1/e8). I'm not sure what the rules are there, once play has started

The letters and numbers on the side of the board have no legal meaning, so the setup is legit. I have seen players accidentally start a game with the king and queen switched (K on d1/d8, Q on e1/e8). I'm not sure what the rules are there, once play has started
I think you tell the arbiter and he decides if you should restart the game or keep playing