(You can always get this help by choosing Help | Game play in the menu.)
Ishido is a tile matching game.  There are 72 tiles and a 12x8 board.  The object of the game is to place all the tiles on the board.
There are six shapes of tiles and six colors of tiles, for a total of 36 combinations.  There are two copies of each tile.
To play, simply drag the new tile onto the board or just tap on the board where you want it.  
You must put each tile next to (below, above, left or right--not diagonally) one or more tiles that match according to the following rules:
- If the new tile has only one neighbor, it must match it by shape or by color or both.
- If it has two neighbors, then one of these must have (at least) the same shape as it and the other must have (at least) the same color as it.
- If it has three neighbors, then either two of these must have (at least) the same shape as it and the other (at least) the same color as it, or else one of these must have (at least) the same color while the other two have (at least) the same shape.
- If it has four neighbors, then two of the neighbors must have (at least) the same shape as it and the other two must have (at least) the same color as it.  This is called a "four-way".
The game ends when you put down all the tiles or when there is no legal move available.
If you want (or you may consider this cheating), the up/down keys can be used to go through all the available legal moves.  On some devices, the enter or center key will then select one of these.

Hint: The scoring highly rewards four-ways.
