# Rules of Mini-Chess

Here are brief rules for Mini-Chess, the chess game we will build an adversary for. Mini-Chess is a simpler[!] version of Speed Chess.

• The game is played on a 5x6 board

``````.....
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As expected, the columns will be labeled a, b, c, d, e and the rows (from bottom) 1, 2, 3, 4, 5, 6. Thus, each square has a coordinate.

• The pieces are the King (K), Queen (Q), Bishop (B), Knight (N), Rook (R) and Pawn (P).

• The two players are White and Black. We will show white pieces as capital letters (KQBNRP) and black pieces as small letters (kqbnrp). White moves first.

• The pieces start on the board like this:

``````kqbnr
ppppp
.....
.....
PPPPP
RNBQK
``````
• The pieces move like this:

• The King can move one space N, S, E, W, NE, NW, SE or SW.

``````.....
xx...
Kx...
xx...
.....
.....
``````
• The Queen can move as far as she wants N, S, E, W, NE, NW, SE or SW, as long as no piece is in the way.

``````x.x..
xx...
QxxB.
xx...
x.x..
x..x.
``````
• The Rook can move as far as it wants N, S, E or W, as long as no piece is in the way.

``````x....
x....
Rxxxx
x....
B....
.....
``````
• The Bishop can move as far as he wants NE,SE,NW or SW, as long as no piece is in the way.

``````..x..
.x...
B....
.x...
..R..
.....
``````
• The Knight moves two spaces N,S,E or W, then one space perpendicular to its previous move. It can jump over pieces in the way.

``````.x...
..x..
NB...
PPx..
.x...
.....
``````
• The White Pawn moves one space N. The Black Pawn moves one space S. Pawns are blocked by pieces in their way. A Pawn reaching the far end of the board becomes a Queen.

``````.....
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p....
x....
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``````
• Except for Pawns, a piece captures by moving onto an opposing piece. White pawns capture only by moving onto a piece NW or NE; Black pawns SW or SE.

``````.....
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p....
.x...
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.....
``````
• Victory conditions:

• The first player to capture the opponent's King wins.

• A game lasting more than 40 moves (by each side) is a draw.

• If a player has no legal move, the game is a draw. Note that in mini-chess there is no rule against "moving into check": allowing your King to be captured is a legal move. (Is a draw by no legal move even possible under these conditions?)

If you have played chess before, this game is easy to understand. The changes from normal chess are:

• Fewer pieces, smaller board (obviously)

• It is legal to move "into check"

• No draw by repetition

• No draw by moves after capture

• Draw by total moves

• No "castling"

• Pawns always move forward one space, never two

• Pawn promotion is always to a Queen