A dataset containing info about pieces' Ids, edges and types. The value of an edge is decoded: 0 for border and 1-8 for different symbols.
A data.table with 256 rows and 6 variables:
Piece's type: 1 - middle, 2 - border, 3 - corner,
0 - not rotated, 1 - turned by 90 degree, 2 - turned by 180 degree, 3 - turned by 270 degree.
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