| 1 | p.boxed |
| 2 | | The player in first has a different set of pieces, |
| 3 | | moving generally like a queen but capturing (almost) as usual. |
| 4 | |
| 5 | figure |
| 6 | img.img-center(src="/variants/Empire/Board.png") |
| 7 | figcaption.text-center Initial deterministic setup. |
| 8 | |
| 9 | p. |
| 10 | Empire Chess is a chess variant designed in 2020 by Couch Tomato, the third |
| 11 | asymmetric game. This game pits the army of the "Empire" (gold) against the |
| 12 | original chess army (the "Kingdom", black). The Empire's unique feature is |
| 13 | that its pieces move like queens but attack differently. |
| 14 | |
| 15 | h3 General Rules |
| 16 | |
| 17 | ol |
| 18 | li The Empire (gold) always moves first. |
| 19 | li The Empire cannot castle. |
| 20 | li. |
| 21 | As the Empire's pawns start on the third rank, they do not have the |
| 22 | option to move two spaces or be captured by en passant. |
| 23 | li Pawns on either side can only promote to a queen. |
| 24 | li. |
| 25 | One can win by bringing the king into the final rank without being check. |
| 26 | This situation is called "campmate". |
| 27 | li Stalemate and repetition are both losses. |
| 28 | li. |
| 29 | The King and Kaiser (Imperial King) may not face |
| 30 | each other on a file or rank. |
| 31 | |
| 32 | h3 Imperial Pieces |
| 33 | |
| 34 | p. |
| 35 | There are five new units unique to the Empire: Siege Towers, Eagles, |
| 36 | Cardinals, Duke, and Soldiers. The bottom rank pieces are all stronger than |
| 37 | their Kingdom counterparts with the exception of the Duke. |
| 38 | |
| 39 | ul |
| 40 | li. |
| 41 | Kaiser (K) — The Imperial king is called the Kaiser and has a |
| 42 | different symbol, but the change is purely aesthetic and thematic: |
| 43 | it behave like an orthodox king. |
| 44 | li. |
| 45 | Soldier (S) — The Soldiers are the two pawn-like pieces replacing |
| 46 | the two middle pawns. They can move one square orthogonally forward, |
| 47 | or lateraly. |
| 48 | |
| 49 | p. |
| 50 | The remaining pieces are "divergent" pieces: they move differently |
| 51 | than they attack (such as pawns). Imperial pieces all move as queens, |
| 52 | but attack like their Kingdom counterpart except for the Duke. |
| 53 | |
| 54 | ul |
| 55 | li. |
| 56 | Siege Tower (T) — The Siege Tower, or Tower for short, |
| 57 | attacks like a Rook. |
| 58 | li Eagle (E) — The Eagle attacks like a Knight. |
| 59 | li Cardinal (C) — The Cardinal attacks like a Bishop. |
| 60 | li Duke (D) — The Duke attacks like a King. |
| 61 | |
| 62 | figure |
| 63 | img.img-center(src="/variants/Empire/EagleMoves.png") |
| 64 | figcaption.text-center Eagle's moves (green) & captures (red). |
| 65 | |
| 66 | h3 Pieces valuation |
| 67 | |
| 68 | p The following simplified values are used by the bot: |
| 69 | |
| 70 | table |
| 71 | tr |
| 72 | th Kingdom piece |
| 73 | th Value |
| 74 | th Imperial piece |
| 75 | th Value |
| 76 | tr |
| 77 | td Pawn |
| 78 | td 1 |
| 79 | td Pawn |
| 80 | td 1 |
| 81 | tr |
| 82 | td Queen |
| 83 | td 9 |
| 84 | td Duke |
| 85 | td 4 |
| 86 | tr |
| 87 | td Bishop |
| 88 | td 3 |
| 89 | td Cardinal |
| 90 | td 4 |
| 91 | tr |
| 92 | td Knight |
| 93 | td 3 |
| 94 | td Eagle |
| 95 | td 7 |
| 96 | tr |
| 97 | td Rook |
| 98 | td 5 |
| 99 | td Siege Tower |
| 100 | td 7 |
| 101 | tr |
| 102 | td Soldier |
| 103 | td 2 |
| 104 | td - |
| 105 | td - |
| 106 | |
| 107 | //h3 More information |
| 108 | |
| 109 | //p |
| 110 | | See |
| 111 | a(href="https://www.pychess.org/variant/empirechess") Empire Chess |
| 112 | | on pychess-variants, where you can also play this variant. |