Playing

Rules
The aim of the game is to remove all tiles from the board. Only two matching tiles can be removed at a time. Two tiles can only be removed if they can be connected with a maximum of three connected lines. Lines can be horizontal or vertical, but not diagonal.
You don't have to draw the lines by yourself, the game does this for you. Just mark two matching tiles on the board, if they can be connected with a maximum of three lines, the lines will be drawn and the tiles are removed.
Remember that lines only may cross the empty border. If you are stuck, you can use the Hint feature to find two tiles which may be removed. Clicking a tile with the will show you all corresponding tiles, no matter if they are removable at the moment or not.
The game is over if no moves are possible and some tiles are left on the board (this should not happen if the option No unsolvable games in the Option menu is checked, since for these games there is at least one way to solve it, though it may happen that you choose the wrong way).

The Game Menu
The menu Game menu lets you control the status of the current game, as there are:
N Game New 	Finish the actual game set and start a new session with new tiles.
P Game Pause 	Pauses the entire game, especially the timer which is needed for the high score. The menu-entry then turns to Resume Game, which is used for resuming the game.
H Game Show Highscores 	Shows the (local) Top-Ten-charts of Shisen-Sho.
H Game Get Hint 	Show a tip, which two tiles to remove next.
R Game Restart Game 	Restart the current game with the same tiles.
Game Is Game Solvable? 	Shows a dialog which tells you whether the game is solvable or not. If the menu-entry Disallow Unsolvable Games in the Options menu is checked, this box is absolutely useless.
Some of the menu items can also be controlled by hot-keys. See Key Bindings for a list.

The Edit Menu
Z Edit Undo 	Undo the last step. Same as the back button in the Toolbar.
Z Game Redo 	Redo the last step. Same as the forward button in the toolbar.