Solves the N-puzzle using IDA*. It always findes an optimal solution.
It is not recomended solving boards larger than 4 x 4 (which also might take quite some time depending on your hardware).
If you want to usa a custom board, edit the CUSTOM_BOARD variable on line 6 to a sequence of the numbers in the board. The default is None, which generates a random board of the size specified in variable DIMENSIONS on line 5.
Remember to update the variable DIMENSIONS on line 5 to the correct dimensions. The default is 3 (which means a 3x3 board, i.e. the 8-puzzle)
If you want to solve a board larger than 4x4, you need to update the MAX_DEPTH-variable on line 7 to the maximal number of moves required to solve the board (regardless of the configuration). See this artice for more information.
If you want this board:
|13|3 |2 |14|
|9 |5 |4 |11|
|8 |6 |10|1 |
|15|12|7 | |
You should change line 6 to: CUSTOM_BOARD = [13, 3, 2, 14, 9, 5, 4, 11, 8, 6, 10, 1, 15, 12, 7]
And line 5 to: DIMENSIONS = 4