Turn Qi

Setup

Pieces

Pieces unable to cross the River:
The KING moves one step orthogonally or diagonally, the latter being restored as in my other XQ variants, but it cannot leave the Fortress. Kings must be kept out of checkmate and not face each other across either River. Kings start on cells cm/cv, and can be represented by Generals from a standard XQ set.
The MD FEZBABA is an enhanced Ferz, named after its components by analogy with the Waffle. It is also confined to the Fortress, and moves one step diagonally round the King cell or two orthogonally through it. The orthogonal move is blocked by an ally on the King cell, but captures an enemy there just as it does an enemy on the destination cell. Fezbabas start on cells bm/mv/dm/dv, and can be represented by Ferzes from a standard XQ set.
The MD ELEPHANT moves two steps diagonally. Again an ally on the intervening cell blocks the move, but an intervening enemy is captured just like an enemy at the destination. They cannot cross the River. Elephants start on cells cl/cn/cu/cw, which means that each Elephant can reach only 6 cells, one less than in standard XQ, but as they reach different sets of cells a player's two Elephants cover 12 cells between them. They can of course be represented by physical Elephant pieces in a standard XQ set.

Pieces unaffected by crossing the River:
The KNIGHT, like the King, has had its full Occidental move (within its domain) restored to it, and can neither be blocked by nor capture intermediate pieces. It makes a root-5 leap and can reach any part of the board. Knights start on cells am/em/av/ev, and can be represented by Horses from a standard XQ set.
The ROOK - the one piece unchanged between Chaturanga, XQ, and my own variants - moves any distance orthogonally through unoccupied cells throughout the board, and on an otherwise empty file can make a null move crossing the River twice. Rooks start on cells al/el/an/en/au/eu/aw/ew, and can be represented by Rooks and Cannons from a standard XQ set.

Pieces enhanced by crossing the River:
CLOCKWAZIR and ANTICLOCKWAZIR: The Clockwazir moves one step clockwise, the Anticlockwazir one step anticlockwise. I did warn you. On crossing the River to the enemy half of the board they can also move one cell in or out along a rank, as in standard XQ. Should either piece manage a second crossing back to their own side of their River, it is promoted to a full Wazir. Clockwazirs fill ranks k and t, and Anticlockwazirs ranks O and X. One piece type can be represented by XQ Soldiers, the other by Draughts, the White Draughts in the XQ army with paler markings and the Black Draughts in the one with darker markings.
The WAZIR moves one step orthogonally throughout the board. It is the promoted form of the front-rank pieces in most of my 2d XQ variants, including my FIDE-array Anglis Qi and now this one. It is not an array piece in this variant, and promotion can be represented by putting a spare Draughts piece underneath the piece representing the Clockwazir or Anticlockwazir.

Rules

Notes

An obvious extension of this variant is a 3-player version on a Kamil Tryzantine board with three River segments and seven files between each pair, totalling 105 cells on 21 files. Hey, Three Rivers, that's a district in Hertfordshire that I've visited. Does that qualify the subvariant as another of my micro-regional ones? The only trouble is what equipment to use. Shogi pieces for the third army, perhaps?

What is more difficult is putting Shogi on a Byzantine-style board. For one thing Shogi's total number of cells, 81, cannot be preserved for a tidy 2-army variant as XQ's 90 are here, and a 3-army one might be a bit cramped! Also extrapolating all piece types gives 13 array ones in all including Rook, Clockrook, and Anticlockrook! Still, anyone who wants to try designing such a variant should feel free.