The book contains 400 excellent Thermometers puzzles 7x7.
Easy puzzles 200 Medium puzzles 200 All riddles have only 1 solution. 2 puzzles per page. The font size is correct you will not have to strain your eyes when solving puzzles.High quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through).
Thermometers is a kind of logic puzzles. Its rules are simple, but insight and subtle...
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Games