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# Citadel chess - Shatranj al-husun

One of the widely played variants of Shatranj was Shatranj al-husun, or Citadel chess. The description here is based on the description in Gollon's book; in the books of Pritchard and Murray a description of the game can also be found. (Actually, most probably, all other sources base their information on Murray's description.) The game is played on a 10 by 10 board, which has four additional fields: the citadels. There are several different opening setups, we give here only one; for the others we refer to the other sources mentioned above. The board looks like this:
```.          .
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
.          .
```
The four fields at the corners are the citadels.

### Pieces

Players have the usual pieces of Shatranj plus two war machines, or dabbabah's, and two extra pawns.

The pieces move as follows:

King, knight (actually: Horse), rook (actually: chariot, called: rukh) move as in FIDE-chess.

The general moves one square diagonally.

The elephant moves exactly two squares diagonally, and can jump the intervening square.

The pawn (actually: soldier) moves as a normal pawn from FIDE-chess, but does not have the possibility of a first double move. Pawns promote to generals, when reaching the last row.

The war machine or dabbabah moves as a bishop from FIDE-chess.

### Opening setup

The opening setup is the following:
```.          .
RNEWKGWERN
PPPPPPPPPP
..........
..........
..........
..........
..........
..........
pppppppppp
rnewkgwern
.          .
```
r, n, e, w, k, g, p stand for rook, knight, elephant, war machine, king, general, pawn. Lower case is white, upper case is black.

### Other rules

When a king reaches a citadel at the opposite side of the board, the game is drawn. A player wins the game, by mating or by stalemating his opponent.

This game has - in contrast to Shatranj and some of its variants, no `bare king' rule, i.e., the game continues normally when one player has lost all its pieces but his king.

Last update: February 16, 1996. ﻿