You can change the order of the square and the rules of the game.
Move Backward and Forward
When you find a bad move, you can move backward immediately. Also, you can move forward.
Move to the Start and the End
You can move backward to the start of the game and forward to the end.
Memorize Steps and Move between Them
When you face a dilemma, you can memorize the present step and then move backward to it. Also, you can move between these steps memorized.
Replay and Pause
Whenever you can replay and pause the game.
Save
Whenever you can save the present progress of game in order to open and resume it on next time.
Records
As a square completed, it will update your records automatically.
Moves and Time Limits
The present limit of moves = the square of the order * 4 - 1 times, and the present limit of time = the square of the order * the square root of the order * 32 seconds. Please refer to the following table.
Order
Moves
Time
3
35
8:18
4
63
17:04
5
99
29:48
6
143
47:01
7
195
1:09:08
8
255
1:36:32
9
323
2:09:36
10
399
2:48:39
11
483
3:34:01
12
575
4:26:02
13
675
5:24:58
14
783
6:31:07
15
899
7:44:45
16
1023
9:06:08
System Requirements
Color display with resolution of at least 640*480 (the higher the better) and video card of at least 16 colors.
Mouse.
Web browser which supports XHTML 1.1, CSS Level 1, DOM Level 1, JavaScript, cookie, GIF and PNG.
Operations
Install and execute
This software do not need installment. You just visit the website and play the game with cookies and JavaScript enabled. If you want to play it offline, you can save at least the following files into your computer -
tettadom.htmltettadom.csstettadom.jsdefault.jslanguage.js
. tettadom.html and language.js must be in the subdirectory "en". Or
Download tettadom
from SourceForge. Pay attention to that it is multilingual, the file is bigger.
Square
Click a cell in the same column or row of the black cell to swap the cell and the black one; the moves increase by one. Click the black cell to undo the swap (move backward); the moves decrease by one. Click the other cells to do nothing.
Move to the Start
Click it to move backward to the initial state of the square; the moves become zero but the elapsed time does not. Please compare it with clicking the moves figure.
Fast Backward
Click it to move backward to the previous step memorized; the moves become the step memorized.
Move Backward
Click it to move backward to the previous step; the moves decrease by one.
Memorize
Click it to memorize the present moves; later, you can move between the steps memorized. When you swap a cell with the black cell by clicking the former, the steps memorized after the present moves will be deleted. For example, if the present moves are 24 and you swap two cells, the moves will become 25 and the steps memorized after 24 will be deleted.
Move Forward
Click it to move forward to the following step; the moves increase by one.
Fast Forward
Click it to move forward to the following step memorized; the moves become the step memorized.
Move to the End
Click it to move forward to the last state of the square; the moves become the maximum moves ever achieved.
Moves
Click it to replay the game; the moves and elapsed time become zeros and the square move backward to the initial state.
Elapsed Time
Click it to pause the game; you cannot move or use any move control buttons. Click it again to resume the game.
New Game
Click it to start a new game; the square will be refreshed and the moves and elapsed time will become zeros.
Save Game
Click it to save the present progress of the game; you must enable cookie to save it.
About tettadom
Click it to display the copyright information about tettadom.
Order of the Square
Select a number to change the order of the square; then it starts a new game.
Rules of the Game
Select a number to change the rules of the game; then replay the game. You can select multiple rules. When any rule is satisfied, you will complete a square.
Records
Records
Completes
Average Moves
Average Time
Rules
It displays your records. As a square completed, it will update your records automatically; you must enable cookie to have the records. "Completes" means the numbers of squares which you complete. "Average Moves" means the average moves which you complete a square with. "Average Time" means the average time (in seconds) which you complete a square with. It displays three kind of records of three rules. The orders is in the leftmost column.
Delete Records and Saved Game
Delete the cookie associated with the webpage. Please refer to the documentation of your web browser.