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Posted April 22, 2013
This book is hard but satisfying for people who have developed techniques for solving these puzzles. I have memorized all of the unique combinations. When I solve a puzzle, I start with the two-space problems and the problems that cross them. Then I do the rest of the problems with only one solution. Next I find the greatest and least number for the more difficult ones. Finally, I try to eliminate possibilities for the very, very hard ones by testing hypotheses. I did not learn how to do this from written instructions but through practice.Was this review helpful? Yes NoThank you for your feedback. Report this reviewThank you, this review has been flagged.