By JohnSmithCV
Setup

Pieces
First Tier
Alfil - Moves two squares diagonally in the same direction.
Knight - Moves one square orthogonally, then one square diagonally in the same direction.
Dabbaba - Moves two squares orthogonally in the same direction.
Second Tier
Pawn - Moves one square orthogonally forward.
Silver - Moves one square diagonally or one square orthogonally forward.
Gold - Moves one square orthogonally or one square diagonally forward.
King - Moves one square orthogonally or one square diagonally.
Third Tier
Bishop - Moves any amount of squares diagonally in the same direction without jumping.
Rook - Moves any amount of squares orthogonally in the same direction without jumping.
Fourth Tier
Combinations of previous pieces.
Rules
Black and White alternate turns moving, dropping, or promoting, White first.
Promotion
If a move begins or ends in the last 3 ranks, First Tier and Second Tier pieces can promote before, after, or instead of moving to any piece of the next higher Tier, with the exception of Kings.
Capturing
Pieces capture in different ways. All captures have the captive converted to the captor's color.
The table shows how pieces capture each other, captors on top.
First Tier | Second Tier | Third Tier | Fourth Tier | |
First Tier | 123 | 1 | 2 | 3 |
Second Tier | 1 | 1 | 12 | 13 |
Third Tier | 2 | 1 | 3 | 3 |
Fourth Tier | 3 | 1 | 3 | 3 |
1. Displacement
Pieces capturing by displacement move into the captive's square, removing them from the board, possibly splitting the piece into components, demoting them one tier until the First Tier, to be dropped onto any empty square of the board later, as a move.
2. Assimilation
Pieces capturing by assimilation move into the captive's square, gaining the movement powers of the captive, which can be split by displacement.
3. Attacking
Pieces capturing by attacking capture any piece in their movement path after they move, leaving the captive on the board.
Victory
You win by capturing your opponent's King. Only one King is allowed per player.