Some of the oldest poly form wooden puzzles first formed as chessboards.
The Pentominoes contain 13 pieces.Each consisting of five squares joined edge to edge forming different shapes.
You may find the shapes of the alphabet letters:I,L,P,T,U,V,W,,Y,Z. the F looks like it had an accident and N takes some imagination
Dimension= 10x 10x 1.5 cm
Difficulty Level: 3of 5