These great little puzzle books put
the question and also have the
solution included on the reverse.
These 6 x 4 inch booklets are bound
with a colourful linen finish with
contrasting colour spine, and open up
to reveal the wooden puzzle tray and
Certainly quite difficult to do and
some are real head-aches!
Made in Hungary and imported by
Not a piece of timber, a fiendish puzzle!
An extension of Farkas Bolyai's theorem.
Put the five pentominoes into the upper rectangle!
Symmetry Finding Challenges