OK, I see. Thank you for the explanation. I don't think he is right about the Left/Right Chariots in Maka Dai Dai Shogi, though; These seem well placed. You can move them quickly away from the edge they start, by moving them forward a lot, and then diagonally back. Or, to say it differently: with only their sliding moves they would be able to access (on an empty board) nearly the entire board, except for a small triangle in the corner of their own camp just behind them. Had they started near the other edge, their sliding moves could only access the triangle above their diagonal move (less than half the board, as they start significantly above the main diagonal), and to access the area under the diagonal they would be dependent on their backward step (which would pretty much take forever on such a large board). You see the same pattern for the Quails in Tori Shogi.
The case of White Tiger / Blue Dragon is entirely different. Their placement in Dai Dai allows the unidirectional diagonal slide to be aimed at the center through the horizontal or vertical bidirectional slide. Swap them, and their diagonal moves hit the edge. This would be especially hard to undo for the White Tiger, which can only distance itself from that edge in steps of 2.
OK, I see. Thank you for the explanation. I don't think he is right about the Left/Right Chariots in Maka Dai Dai Shogi, though; These seem well placed. You can move them quickly away from the edge they start, by moving them forward a lot, and then diagonally back. Or, to say it differently: with only their sliding moves they would be able to access (on an empty board) nearly the entire board, except for a small triangle in the corner of their own camp just behind them. Had they started near the other edge, their sliding moves could only access the triangle above their diagonal move (less than half the board, as they start significantly above the main diagonal), and to access the area under the diagonal they would be dependent on their backward step (which would pretty much take forever on such a large board). You see the same pattern for the Quails in Tori Shogi.
The case of White Tiger / Blue Dragon is entirely different. Their placement in Dai Dai allows the unidirectional diagonal slide to be aimed at the center through the horizontal or vertical bidirectional slide. Swap them, and their diagonal moves hit the edge. This would be especially hard to undo for the White Tiger, which can only distance itself from that edge in steps of 2.