# 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
```.....
.....
.....
.....
.....
.....
```
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...
Qxxxx
xx...
x.x..
x..x.
```
• The Rook can move as far as he wants N,S,E or W, as long as no piece is in the way.
```x....
x....
Rxxxx
x....
x....
x....
```
• 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...
..x..
...x.
```
• 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..
N....
..x..
.x...
.....
```
• The White Pawn moves one space N. The Black Pawn moves one space S. Pawns are blocked by pieces in their way.
```.....
.....
p....
x....
.....
.....
```
A Pawn reaching the far end of the board becomes a Queen.
• 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.
```.....
.....
p....
.x...
.....
.....
```
• 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. (In mini-chess there is no rule against "moving into check": allowing your King to be captured is legal.)
• If one player has only a King, and the other player has only a King, or a King and a Knight, or a King and a Bishop, the game is a draw. (This is to avoid a player losing on time in this situation.)

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

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