COUNT THE TRIANGLES and more than 50 other thinking out of the box puzzles. An 80 page book, 4 levels of difficulty, solutions included. Available in English and Hebrew Many other puzzles available at excellent prices Check out the web page www.alanshap.com. Great for a gift, Shabbat table, bikkur cholim, a long trip / flight. Excellent for mind development. Also available: Lateral thinking workshops for corporate and private events