Okay! Hx(5,0)
Chess on an Infinite Plane (aidanB1 - HorribleTomato)

Yes that bishop move was illegal since you're in check... unless hanging your king means you resign. So, B(8,-3) isn't valid and you should move your king.

Game review: You missed a way to save the exchange/ you didn't see my simple tactics/you sort of got greedy with my HPs and let me develop my Hs. On the other hand I totally missed that chancellor- Q for H is always good. Your play was clearly optimal in the beginning, but you messed up when the play got sharper.
I have the white king on (5,0). Is this diagram right?
If you don't see this in the earlier posts maybe your display is drawing on your PC's cache?
39.K(5,0)...H(7,-2)+