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Klotski Solver
--------------
*--------------------------------------------------------------*
A command-line solver for the Klotski game written in Python 3.4
*--------------------------------------------------------------*
Copyright 2014, Mingjing Zhang
Simon Fraser University
+------------+
How it works:
+------------+
Run Main.py.
It reads the board specified in 'DefaultLayout.txt',
then output the steps in an easy-to-read formt
+--------------------------------+
How to write your own layout file:
+--------------------------------+
The layout file contains the coordinate of each block. It is organized as follows:
-- BEGINNING OF FILE --
TypeLetter
Coordinate
Coordinate
...
TypeLetter
Coordinate
Coordinate
...
...
-- END OF FILE --
'TypeLetter' is a single capital letter that specifies which type of piece the next few coordinates define,
until another TypeLetter is encountered. It can be either B(ig), H(orizontal), V(ertical) or S(mall).
'Coordinate' is a two number group in the order of 'X Y' (0 based). It represents the coordinate of the
LEFT-TOP block of a piece.
For example, the following file:
B
1 0
H
1 2
2 3
defines a 2x2 piece whose LEFT-TOP block is at (1,0),
and two 1x2 pieces whose LEFT-TOP blocks are at(1,2), and (2, 3) respectively.
So the resulting board would look (E = empty block):
E 0 0 E
E 0 0 E
E 1 1 E
E E 1 1
E E E E
+--+
FAQ:
+--+
Why the 'HR' prefix for all class files?
HR is the acronym of the Chinese name of Klotski -- Hua-Rong Dao (The Path of Hua-Rong).
In the Chinese version, the game reenacts a classical story where the warlord, Cao Cao,
escaped to the path of Hua-Rong after defeated in the Battle of Red Cliff. There he was
ambushed by the enemy general Guan Yu. Each piece is assigned with a name of a historical
figure, with the 2x2 piece being Cao Cao, and the horizontal one Guan Yu.
+--------------+
Default Output:
+--------------+
Solution found in 5.627 secs. 11975 nodes checked
Solution Report:
========================================
Initial Layout:
----------------------------------------
1 0 0 2
1 0 0 2
3 5 5 4
3 6 7 4
8 9
Solution:
----------------------------------------
Step 1 to 5:
#6 DOWN #9 LEFT #4 DOWN #5 RIGHT #3 RIGHT
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
3 5 5 4 --> 3 5 5 4 --> 3 5 5 --> 3 5 5 --> 3 5 5 -->
3 7 4 3 7 4 3 7 4 3 7 4 3 7 4
8 6 9 8 6 9 8 6 9 4 8 6 9 4 8 6 9 4
Step 6 to 10:
#8 UP #6 LEFT #3 DOWN #5 LEFT LEFT #7 UP RIGHT
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
3 5 5 --> 3 5 5 --> 5 5 --> 5 5 --> 5 5 7 -->
8 3 7 4 8 3 7 4 8 3 7 4 8 3 7 4 8 3 4
6 9 4 6 9 4 6 3 9 4 6 3 9 4 6 3 9 4
Step 11 to 15:
#9 UP UP #3 RIGHT #8 RIGHT DOWN #5 DOWN #9 LEFT LEFT
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
5 5 9 7 --> 5 5 9 7 --> 5 5 9 7 --> 9 7 --> 9 7 -->
8 3 4 8 3 4 3 4 5 5 3 4 5 5 3 4
6 3 4 6 3 4 6 8 3 4 6 8 3 4 6 8 3 4
Step 16 to 20:
#7 LEFT LEFT #3 UP #4 UP #8 RIGHT RIGHT #6 RIGHT RIGHT
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2
9 7 --> 9 7 3 --> 9 7 3 4 --> 9 7 3 4 --> 9 7 3 4 -->
5 5 3 4 5 5 3 4 5 5 3 4 5 5 3 4 5 5 3 4
6 8 3 4 6 8 4 6 8 6 8 6 8
Step 21 to 25:
#5 DOWN #7 DOWN LEFT #3 LEFT #4 LEFT #2 DOWN DOWN
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0
1 0 0 2 1 0 0 2 1 0 0 2 1 0 0 2 1 0 0
9 7 3 4 --> 9 3 4 --> 9 3 4 --> 9 3 4 --> 9 3 4 2 -->
3 4 7 3 4 7 3 4 7 3 4 7 3 4 2
5 5 6 8 5 5 6 8 5 5 6 8 5 5 6 8 5 5 6 8
Step 26 to 30:
#0 RIGHT #1 RIGHT #9 UP UP #7 UP UP #3 LEFT
1 0 0 1 0 0 9 1 0 0 9 1 0 0 9 1 0 0
1 0 0 1 0 0 1 0 0 7 1 0 0 7 1 0 0
9 3 4 2 --> 9 3 4 2 --> 3 4 2 --> 3 4 2 --> 3 4 2 -->
7 3 4 2 7 3 4 2 7 3 4 2 3 4 2 3 4 2
5 5 6 8 5 5 6 8 5 5 6 8 5 5 6 8 5 5 6 8
Step 31 to 35:
#1 DOWN DOWN #0 LEFT #2 UP UP #4 RIGHT #6 UP UP
9 0 0 9 0 0 9 0 0 2 9 0 0 2 9 0 0 2
7 0 0 7 0 0 7 0 0 2 7 0 0 2 7 0 0 2
3 1 4 2 --> 3 1 4 2 --> 3 1 4 --> 3 1 4 --> 3 1 6 4 -->
3 1 4 2 3 1 4 2 3 1 4 3 1 4 3 1 4
5 5 6 8 5 5 6 8 5 5 6 8 5 5 6 8 5 5 8
Step 36 to 40:
#8 LEFT UP #5 RIGHT RIGHT #1 DOWN #3 DOWN #6 LEFT LEFT
9 0 0 2 9 0 0 2 9 0 0 2 9 0 0 2 9 0 0 2
7 0 0 2 7 0 0 2 7 0 0 2 7 0 0 2 7 0 0 2
3 1 6 4 --> 3 1 6 4 --> 3 6 4 --> 6 4 --> 6 4 -->
3 1 8 4 3 1 8 4 3 1 8 4 3 1 8 4 3 1 8 4
5 5 5 5 1 5 5 3 1 5 5 3 1 5 5
Step 41 to 45:
#0 DOWN #9 RIGHT RIGHT #7 UP RIGHT #6 UP UP #3 UP UP
9 2 9 2 7 9 2 6 7 9 2 6 7 9 2
7 0 0 2 7 0 0 2 0 0 2 0 0 2 3 0 0 2
6 0 0 4 --> 6 0 0 4 --> 6 0 0 4 --> 0 0 4 --> 3 0 0 4 -->
3 1 8 4 3 1 8 4 3 1 8 4 3 1 8 4 1 8 4
3 1 5 5 3 1 5 5 3 1 5 5 3 1 5 5 1 5 5
Step 46 to 50:
#1 LEFT #8 LEFT DOWN #0 DOWN #9 DOWN LEFT #2 LEFT
6 7 9 2 6 7 9 2 6 7 9 2 6 7 2 6 7 2
3 0 0 2 3 0 0 2 3 2 3 9 2 3 9 2
3 0 0 4 --> 3 0 0 4 --> 3 0 0 4 --> 3 0 0 4 --> 3 0 0 4 -->
1 8 4 1 4 1 0 0 4 1 0 0 4 1 0 0 4
1 5 5 1 8 5 5 1 8 5 5 1 8 5 5 1 8 5 5
Step 51 to 55:
#4 UP UP #0 RIGHT #9 DOWN #7 DOWN #6 RIGHT
6 7 2 4 6 7 2 4 6 7 2 4 6 2 4 6 2 4
3 9 2 4 3 9 2 4 3 2 4 3 7 2 4 3 7 2 4
3 0 0 --> 3 0 0 --> 3 9 0 0 --> 3 9 0 0 --> 3 9 0 0 -->
1 0 0 1 0 0 1 0 0 1 0 0 1 0 0
1 8 5 5 1 8 5 5 1 8 5 5 1 8 5 5 1 8 5 5
Step 56 to 60:
#3 UP #1 UP #8 LEFT #9 DOWN DOWN #0 LEFT
3 6 2 4 3 6 2 4 3 6 2 4 3 6 2 4 3 6 2 4
3 7 2 4 3 7 2 4 3 7 2 4 3 7 2 4 3 7 2 4
9 0 0 --> 1 9 0 0 --> 1 9 0 0 --> 1 0 0 --> 1 0 0 -->
1 0 0 1 0 0 1 0 0 1 0 0 1 0 0
1 8 5 5 8 5 5 8 5 5 8 9 5 5 8 9 5 5
Step 61 to 65:
#4 DOWN DOWN #2 RIGHT #6 RIGHT #7 RIGHT #3 RIGHT
3 6 2 3 6 2 3 6 2 3 6 2 3 6 2
3 7 2 3 7 2 3 7 2 3 7 2 3 7 2
1 0 0 4 --> 1 0 0 4 --> 1 0 0 4 --> 1 0 0 4 --> 1 0 0 4 -->
1 0 0 4 1 0 0 4 1 0 0 4 1 0 0 4 1 0 0 4
8 9 5 5 8 9 5 5 8 9 5 5 8 9 5 5 8 9 5 5
Step 66 to 70:
#1 UP UP #0 LEFT #7 DOWN DOWN #6 DOWN DOWN #2 LEFT
1 3 6 2 1 3 6 2 1 3 6 2 1 3 2 1 3 2
1 3 7 2 1 3 7 2 1 3 2 1 3 2 1 3 2
0 0 4 --> 0 0 4 --> 0 0 4 --> 0 0 6 4 --> 0 0 6 4 -->
0 0 4 0 0 4 0 0 7 4 0 0 7 4 0 0 7 4
8 9 5 5 8 9 5 5 8 9 5 5 8 9 5 5 8 9 5 5
Step 71 to 75:
#4 UP UP #7 RIGHT UP #5 UP #9 RIGHT RIGHT #8 RIGHT RIGHT
1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4
1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4
0 0 6 --> 0 0 6 7 --> 0 0 6 7 --> 0 0 6 7 --> 0 0 6 7 -->
0 0 7 0 0 0 0 5 5 0 0 5 5 0 0 5 5
8 9 5 5 8 9 5 5 8 9 8 9 8 9
Step 76 to 80:
#0 DOWN #6 LEFT LEFT #7 LEFT LEFT #5 UP #8 UP RIGHT
1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4
1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4 1 3 2 4
6 7 --> 6 7 --> 6 7 --> 6 7 5 5 --> 6 7 5 5 -->
0 0 5 5 0 0 5 5 0 0 5 5 0 0 0 0 8
0 0 8 9 0 0 8 9 0 0 8 9 0 0 8 9 0 0 9
Step 81 to 81:
#0 RIGHT
1 3 2 4
1 3 2 4
6 7 5 5
0 0 8
0 0 9
----------------------------------------
Total steps: 81
============ END OF REPORT =============
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Command-line Klotski solver written in Python 3.4
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