White queen D3.
Dems will probably be unable to resist. Black Queen D3.
White King D3.
Alternatively, black moves Queen H1 or someplace else I haven't wargamed yet.
Depends on the victory conditions. Points chess awards points for surviving pieces. You can get the checkmate, but lose the points with an overly sacrificial strategy.
On the other hand, a classic chess match doesn't consider 'value' of the pieces. Supercomputers break the game down into branches of moves that lead to a checkmate for the opponent… And those that don't. They will steer the game into a branch where it is impossible for the opponent to avoid checkmate and give zero fucks about the pieces other than whether or not the board condition can lead to a branch of play where victory exists.
Which is why I say White Queen D3.
King takes Queen if she gets greedy and goes for D3 as well. Else she moves to H1 or G1. Extremely unlikely she will move to take B1. Suicide is any other move. Bishop to … F4 if memory serves. Then take pawn after black move. They will move a pawn. Maybe do something crazy with that bishop. Can't afford to do anything else, really. That left flank is nice and open for a bishop bombing with the queen in support. Black can't really do jack diddly poopy pants about it.
B-F4
You are right. Forgot why I excluded that option from my assessment. Probably because it was inconvenient. Which is why wargames with others are better.
We are white, obviously.
Not only is black missing a bishop, they also would probably rather die than be white when black is the race of grace.
They might accept white on the technicality of it being rainbow… But only on phosphor and LED displays. As for the actual meaning and value… It may or may not have value to the map and stringers. Using chess pieces and the game as too direct of an analog can be misleading, as pieces in real life can change sides… Much like in Shogi or Go.