--- /dev/null
+p.boxed
+ | The player in first has a different set of pieces,
+ | moving generally like a queen but capturing (almost) as usual.
+
+figure
+ img.img-center(src="/variants/Empire/Board.png")
+ figcaption.text-center Initial deterministic setup.
+
+p.
+ Empire Chess is a chess variant designed in 2020 by Couch Tomato, the third
+ asymmetric game. This game pits the army of the "Empire" (gold) against the
+ original chess army (the "Kingdom", black). The Empire's unique feature is
+ that its pieces move like queens but attack differently.
+
+h3 General Rules
+
+ol
+ li The Empire (gold) always moves first.
+ li The Empire cannot castle.
+ li.
+ As the Empire's pawns start on the third rank, they do not have the
+ option to move two spaces or be captured by en passant. Kingdom pawns
+ retain the ability to move two spaces initially and to be captured via
+ en passant.
+ li Pawns on either side can only promote to a queen.
+ li.
+ An additional method of victory is available: called campmate.
+ Campmate is achieved by moving one's king into the final rank
+ without being check.
+ li Stalemate and repetition are both losses.
+ li.
+ Facing kings — The King and Kaiser (Imperial King) may not face
+ each other on a file or rank, similar to Xiangqi.
+
+h3 Imperial Pieces
+
+p.
+ There are five new units unique to the Empire: 2 Siege Towers, 2 Eagles,
+ 2 Cardinals, 1 Duke, and 2 Soldiers. The bottom rank are all stronger than
+ their Kingdom counterparts with the exception of the Duke.
+
+ul
+ li.
+ Kaiser (K) — The Imperial king is called the Kaiser and has a
+ different symbol, but is essentially the same as the Kingdom's King,
+ also using the same abbreviation (K) — the change is purely
+ aesthetic and thematic.
+ li.
+ Soldier (S) — The Soldiers are the two pawn-like pieces replacing
+ the two middle pawns. These act like promoted soldiers in Xiangqi and
+ can move one square orthogonally in any direction except backwards.
+
+p.
+ The remaining pieces are divergent pieces, pieces that move differently
+ than they attack (such as pawns). Imperial pieces all move as queens,
+ but attack like their Kingdom counterpart except for the Duke.
+
+ul
+ li.
+ Siege Tower (T) — The Siege Tower, or Tower for short, moves like a
+ Queen but attacks like a Rook.
+ li Eagle (E) — The Eagle moves like a Queen but attacks like a Knight.
+ li.
+ Cardinal (C) — The Cardinal moves like a Queen
+ but attacks like a Bishop.
+ li Duke (D) — The Duke moves like a Queen but attacks like a King.
+
+figure
+ img.img-center(src="/variants/Empire/EagleMoves.png")
+ figcaption.text-center Eagle's moves (green) & captures (red).
+
+h3 Piece valuation
+
+p The following simplified values are used by the bot:
+
+table
+ tr
+ th Kingdom piece
+ th Value
+ th Imperial piece
+ th Value
+ tr
+ td Pawn
+ td 1
+ td Pawn
+ td 1
+ tr
+ td Queen
+ td 9
+ td Duke
+ td 4
+ tr
+ td Bishop
+ td 3
+ td Cardinal
+ td 4
+ tr
+ td Knight
+ td 3
+ td Eagle
+ td 7
+ tr
+ td Rook
+ td 5
+ td Siege Tower
+ td 7
+ tr
+ td Soldier
+ td 2
+ td -
+ td -
+
+h3 More information
+
+p
+ | See
+ a(href="https://www.pychess.org/variant/empirechess") Empire Chess
+ | on pychess-variants, where you can also play this variant.