ZX-Othello
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(c) 2006 Matt Barber
Contains the Z80 depacker for megalz V4 packed files (C) fyrex^mhm

For the Sinclair Spectrum 48K/128K

Version 1.1

This is an improved version to the previous submission. The changes are:

Added logic to improve corner play.
Removed cursor when player is not making a move.
Improved graphics.
Rewritten a few more routines in assembler.


Description
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This is an implementation of the classic board game Reversi/Othello, written
mostly in C with a little bit of assembler to speed the graphics along.

The rules are fairly simple:

1. You have two sided tiles, black and white which you place upon the board.
2. Black goes first. The players then take turns.
3. A player has to place a tile so that it is in a square adjacent to a tile of
   the opposite colour.
   There must be an unbroken line of tiles of the opposite colour in at least
   one of the eight cardinal
   directions terminating with a tile of the player's colour.
4. The tiles thus enclosed are flipped and become the same colour as the
   player's tile.
5. If a player is unable to go, they must pass.
6. If neither player can go (e.g. when the board is full) the game ends.
7. The winner is the player with the most tiles on the board. An equal number of
   tiles is a draw.

The implementation supports one player games (as either colour), two player
games and also a demonstration game. The strategy the computer uses isn't
terribly good; it picks randomly from the highest scoring moves. This is
generally too "greedy" to beat a moderately skilled player; the computer is
liable to lose mobility as a result and have any early gains rapidly overturned.

More information about the game of Reversi/Othello can be found at:

http://en.wikipedia.org/wiki/Reversi

Controls
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q	Up
a	Down
o	Left
p	Right
Space	Select square