Abstract Crossword 5B

A mathematics-based, crossword puzzle SYSTEM. Volume 2 of 3. The unsolved Abstract Crossword puzzles. Introduces the novelty of 2D Regular Expressions! Across and down, simultaneously. Seniors, when you sign up for Medicare coverage of your physical health, at the same time purchase this series of mental exercises to sharpen and re-sharpen your brain on a regular basis.

• | Author: Francis Gurtowski
• | Publisher: CreateSpace Independent Publishing Platform
• | Publication Date: Apr 12, 2017
• | Number of Pages: 630 pages
• | Language: English
• | Binding: Paperback
• | ISBN-10: 1545180911
• | ISBN-13: 9781545180914