Score File
The scores and solutions are saved in XML files in the Scores sub-folder of the game. There is one score file for each level file, the name is the same as the level file but with the extension .ssc (Sokoban Score Collection). The format of the file is defined in an XSD file that can be found here. The solution is stored as the content of the Score tag.

Each move is encoded in two bits to save space. The coding is shown in the table below. No distinction is made between moves and pushes since this is given by the level itself, a move left will be a push left if there is a ball to the left of the man.

Move	Bits
Up	00
Right	01
Down	10
Left	11

The solution is stored as a byte array with a 4 byte length holding the number of moves in the solution, byte nr 0 holds the most significant byte and byte nr 3 the least significant byte of the length. The actual moves are stored beginning with byte nr 4. Each byte holds four moves, beginning in the two most significant bits of the byte. The pattern 00112233 in byte 4 means move 0, move 1 and so on. Previously there was a format with a 2 byte length. The new format has the attribute Version="2" in the root element. When the game finds a file with version 1 (default), it is automatically converted to Version 2.

The result of this is bytes with any value (0 - 255). In order to store this binary data as text in the file, the whole array is Base64 encoded. Base64 is a standard encoding specified in RFC 1421.

Byte	Description
0	Length (msb)
1	Length
2	Length
3	Length (lsb)
4	00112233
5	44556677
6	88...
...	...