Different Armies Rules

White and black pieces are replaced by different armies.

Pawns and kings move as usual, but the other pieces generally do not. Indeed, before the game start you must select two armies, defining new movements for "rooks", "knights", "bishops" and "queens".

Pieces movements are described using these simple pieces:

Dabbabah = jump two squares orthogonally
Alfil = jump two squares diagonally
Wazir = one square orthogonally
Ferz = one square diagonally
Three leaper (L3) = jump three squares orthogonally
Narrow knight = knight without "2+1 lateral moves"

Pawns can be promoted into a piece of any of the two armies playing.

The Colorbound Clobberers

Rook = bishop + dabbabah = "bede" (D),
Knight = wazir + alfil = "waffle" (W),
Bishop = ferz + alfil + dabbabah = "fad" (F),
Queen = bishop + knight = "cardinal" (C).

Moves of the Bede on the left, and of the Waffle on the right.

Moves of the Fad.

When castling large, the king and rook arrive respectively on b1/b8 and c1/c8 so that the rook remains on the same color.

The Nutty Knights

Rook = rook forward and sideways + king backwards = "charging rook" (G),
Knight = narrow knight + ferz = "fibnif" (I),
Bishop = knight forward + king sideways and backwards = "charging knight" (T),
Queen = rook forward and sideways + knight forward + king = "colonel" (L).

Moves of the Charging rook on the left, and of the Fibnif on the right.

Moves of the Charging knight on the left, and of the Colonel on the right.

The Remarkable Rookies

Rook = rook limited to 4 squares = "short rook" (S),
Knight = dabbabah + wazir = "woody rook" (Y),
Bishop = dabbabah + ferz + L3 = "half-duck" (H),
Queen = rook + knight = "chancellor" (O).

Moves of the Woody rook on the left, and of the Half-duck on the right.

Fide army

The standard chess pieces.

Source

Chess with different armies on chessvariants.com.