I now understand that a bishop from d1 can only reach H5 - sometimes it takes a little longer, sorry. G4 shares a side with h5 and so a move to h5 is not diagonal. But why can't a bishop from d1 move to A4 and what am I still overlooking here? B3 shares neither a side with a4 nor with A4. In this respect, a move from b3 to a4 is just as diagonal as a move from b3 to A4. If A4 is not possible, then a color change of the bishop from d1 via A4 to e8 is also not possible. Only the color change from e8 via A4 to d1 would be possible. The situation with the switch h5/H5 applies vice versa. What do I not realize here?
Should the description consider the following knight moves?
Knight on b3, is the move to a5 possible, because on the same diagonal? Or a knight on a3, are the moves to a5 or b5 possible, because on the same line?
I now understand that a bishop from d1 can only reach H5 - sometimes it takes a little longer, sorry. G4 shares a side with h5 and so a move to h5 is not diagonal. But why can't a bishop from d1 move to A4 and what am I still overlooking here? B3 shares neither a side with a4 nor with A4. In this respect, a move from b3 to a4 is just as diagonal as a move from b3 to A4. If A4 is not possible, then a color change of the bishop from d1 via A4 to e8 is also not possible. Only the color change from e8 via A4 to d1 would be possible. The situation with the switch h5/H5 applies vice versa. What do I not realize here?
Should the description consider the following knight moves?
Knight on b3, is the move to a5 possible, because on the same diagonal? Or a knight on a3, are the moves to a5 or b5 possible, because on the same line?